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✨ AI Change Summary
Added: - New navigation items under "Apps SDK": "Workspace Agents" and "Trigger published ChatGPT workspace agents". - New "Get started" section with items: "Trigger workspace agent runs" and "Authenticate with Workspace Agent access tokens". Also a "Home" link added at the beginning and end of that section. Changed: - The navigation summary line changed from "Apps SDK Commerce Ads" to "Apps SDK Workspace Agents Commerce Ads" to include the new workspace agents category. Removed: (No removals.)
4 days agoGoto single snapshot
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Changelog
Upcoming deprecations can be found on the deprecations page.
June, 2026
Jun 9
Feature
v1/responses
Web search can now return image results alongside regular text results. Use image search when your application needs current or web-grounded visuals, such as product photos, landmarks, places, events, or visual references. Read more in the web search guide.
Jun 5
Update
Released a redesigned navigation for the OpenAI API platform, visit here.
Jun 4
Feature
omni-moderation-latest
v1/responses
v1/chat/completions
Added moderation scores to the Responses API and Chat Completions API. Pass a moderation object in a generation request to receive moderation results for both the model input and generated output in the same response.
Learn more in the Moderation guide.
Jun 3
Update
Announced the deprecation of reusable prompt objects, the Evals platform, and Agent Builder. See the deprecations page for shutdown timelines and migration guidance.
Jun 2
Update
Starting June 2, 2026, eligible container sessions will be billed per minute with a 5-minute minimum, instead of being billed at the full 20-minute session rate. The underlying per-minute rate will remain the same.
This update is intended to make billing more granular for shorter sessions and will lower effective cost for customers.
You can find current built-in tool pricing in our API pricing docs.
Jun 1
Feature
gpt-5.4
gpt-5.5
v1/responses
OpenAI models are now available in Amazon Bedrock through an OpenAI-compatible Responses API endpoint. Supported models and features vary by AWS Region. Learn more.
May, 2026
May 29
Update
v1/responses
v1/chat/completions
v1/batch
For organizations without ZDR enabled, prompt_cache_retention now defaults to 24h instead of in_memory, enabling extended prompt caching by default. Learn more.
May 28
Update
chat-latest
Released chat-latest snapshot which points to the latest Instant model currently used in ChatGPT. We recommend leveraging GPT-5.5 for production API usage, but feel free to use this model to test the latest improvements for chat use cases. The underlying model snapshot will be regularly updated. Read more here.
May 26
Feature
Released workload identity federation. Trusted workloads can exchange externally issued identity tokens for short-lived OpenAI access tokens without storing long-lived API keys.
May 26
Update
Added new Admin API capabilities for managing spend alerts, model allowlists, data retention settings, and hosted tool permissions, plus querying granular billing line items.
May 19
Feature
Released Secure MCP Tunnel for enterprise customers. Secure MCP Tunnel lets supported OpenAI products including ChatGPT web, Codex, Responses API, and AgentKit connect to private or on-prem MCP servers through a customer-hosted tunnel-client without exposing those servers to the public internet.
May 19
Update
You can now manage multiple IP allowlists and apply each one at the project level or across the whole organization. To configure them, go to Settings > Security > IP allowlist.
May 12
Update
dall-e-2
dall-e-3
v1/realtime
Deprecated DALL·E model snapshots and the Realtime API Beta.
DALL·E model snapshots dall-e-2 and dall-e-3 were deprecated and removed from the API on May 12, 2026. We recommend using gpt-image-2, gpt-image-1, or gpt-image-1-mini instead.
The Realtime API Beta was deprecated and removed from the API on May 12, 2026. If you are still using the beta interface, migrate to the released Realtime API. See the migration guide and the full deprecations page.
May 11
Feature
v1/responses
Added return_token_budget for the Responses API web search tool. Use it to opt in to longer GPT-5+ reasoning web search runs for high-effort research and evaluation workloads.
May 7
Feature
gpt-realtime-2
gpt-realtime-translate
gpt-realtime-whisper
v1/realtime
v1/realtime/translations
v1/realtime/transcription_sessions
Released GPT-Realtime-2, a new realtime voice model with configurable reasoning for speech-to-speech agents, along with GPT-Realtime-Translate for streaming speech translation and GPT-Realtime-Whisper for streaming speech-to-text.
Updated the Realtime and audio guide, added a dedicated Realtime translation guide, refreshed Realtime transcription for streaming transcripts, and moved realtime prompting guidance into Using realtime models.
May 7
Feature
Released the OpenAI Developers plugin for Codex. This helps you build AI applications and agents in Codex with OpenAI Platform access and OpenAI API setup guidance.
May 6
Update
The updated Agents SDK is now available in TypeScript, with support for sandbox agents and an open-source harness built in. Learn more here.
May 5
Update
chat-latest
Released chat-latest snapshot which points to the latest Instant model currently used in ChatGPT. We recommend leveraging GPT-5.5 for production API usage, but feel free to use this model to test our latest improvements for chat use cases. The underlying model snapshot will be regularly updated. Read more here.
May 4
Update
Admin APIs are now supported in the OpenAI SDKs for Node, Python, Go, Ruby, and Java. See the Admin APIs guide for setup instructions and examples.
April, 2026
Apr 24
Feature
gpt-5.5
gpt-5.5-pro
v1/responses
v1/chat/completions
v1/batch
Released GPT-5.5, a new frontier model for complex professional work, to the Chat Completions and Responses API, and released GPT-5.5 Pro for Responses API requests for tougher problems that benefit from more compute.
GPT-5.5 supports a 1M token context window, image input, structured outputs, function calling, prompt caching, Batch, tool search, built-in computer use, hosted shell, apply patch, Skills, MCP, and web search. Key updates include:
* Reasoning effort now defaults to medium.
* When image_detail is unset or set to auto, the model now uses original behavior.
* Caching for GPT-5.5 only works with extended prompt caching. In-memory prompt caching is not supported. Learn more here.
Apr 21
Feature
gpt-image-2
v1/images/generations
v1/images/edits
v1/batch
Released GPT Image 2, a state-of-the-art image generation model for image generation and editing. GPT Image 2 supports flexible image sizes, high-fidelity image inputs, token-based image pricing, and Batch API support with a 50% discount.
Apr 15
Update
Updated the Agents SDK with new capabilities, including:
* running agents in controlled sandboxes;
* inspecting and customizing the open-source harness; and
* controlling when memories are created and where they're stored.
March, 2026
Mar 17
Feature
gpt-5.4-mini
gpt-5.4-nano
v1/responses
v1/chat/completions
Released GPT-5.4 mini and GPT-5.4 nano to the Chat Completions and Responses API. GPT-5.4 mini brings GPT-5.4-class capabilities to a faster, more efficient model for high-volume workloads, while GPT-5.4 nano is optimized for simple high-volume tasks where speed and cost matter most.
GPT-5.4 mini supports tool search, built-in computer use, and compaction. GPT-5.4 nano supports compaction, but does not support tool search or computer use.
Mar 16
Update
gpt-5.3-chat-latest
Updated the gpt-5.3-chat-latest slug to point to the latest model currently used in ChatGPT.
Mar 13
Fix
gpt-5.4
v1/responses
v1/chat/completions
Updated our image encoder to fix a small bug with input_image inputs in GPT-5.4. Some image understanding use cases may now see improved quality. No action is required.
Mar 12
Feature
sora-2
sora-2-pro
v1/videos
v1/videos/characters
v1/videos/extensions
v1/batch
Expanded the Sora API with reusable character references, longer generations up to 20 seconds, 1080p output for sora-2-pro, video extensions, and Batch API support for POST /v1/videos. 1080p generations on sora-2-pro are billed at $0.70 per second. Learn more here.
Mar 12
Update
sora-2
sora-2-pro
v1/videos/edits
v1/videos/{video_id}/remix
Added POST /v1/videos/edits for editing existing videos. This will replace POST /v1/videos/{video_id}/remix, which will be deprecated in 6 months. Learn more here.
Mar 5
Feature
gpt-5.4
gpt-5.4-pro
v1/responses
v1/chat/completions
Released GPT-5.4, our newest frontier model for professional work, to the Chat Completions and Responses API, and released GPT-5.4 Pro to the Responses API for tougher problems that benefit from more compute.
Also released:
* Tool search in the Responses API, which lets models defer large tool surfaces until runtime to reduce token usage, preserve cache performance, and improve latency.
* Built-in Computer use support in GPT-5.4 through the Responses API computer tool for screenshot-based UI interaction.
* A 1M token context window and native Compaction support for longer-running agent workflows.
Mar 3
Feature
gpt-5.3-chat-latest
v1/chat/completions
v1/responses
Released gpt-5.3-chat-latest to the Chat Completions and Responses API. This model points to the GPT-5.3 Instant snapshot currently used in ChatGPT. Read more here.
February, 2026
Feb 24
Feature
v1/responses
v1/chat/completions
Expanded input_file support to accept more document, presentation, spreadsheet, code, and text file types. Learn more here.
Feb 24
Feature
v1/responses
Released phase to the Responses API. It labels an assistant message as intermediate commentary (commentary) or the final answer (final_answer). Read more here.
Feb 24
Feature
gpt-5.3-codex
v1/responses
Released gpt-5.3-codex to the Responses API. Read more here.
Feb 23
Feature
v1/responses
Launched WebSocket mode for the Responses API. Learn more here.
Feb 23
Feature
gpt-realtime-1.5
gpt-audio-1.5
v1/realtime
v1/chat/completions
Released GPT-Realtime-1.5 to the Realtime API.
Released gpt-audio-1.5 to the Chat Completions API. Read more here.
Feb 10
Feature
gpt-image-1.5
gpt-image-1
gpt-image-1-mini
chatgpt-image-latest
v1/batch
Batch API is now supported for GPT Image models: gpt-image-1.5, chatgpt-image-latest, gpt-image-1, and gpt-image-1-mini.
Feb 10
Update
gpt-5.2-chat-latest
Updated the gpt-5.2-chat-latest slug to point to the latest model currently used in ChatGPT.
Feb 10
Feature
v1/responses
Launched server-side compaction in the Responses API.
Feb 10
Feature
v1/responses
Launched support for Skills in the Responses API. We support Skills across both local execution and hosted container-based execution.
Feb 10
Feature
v1/responses
Launched a new Hosted Shell tool, as well as support for networking in containers.
Feb 9
Feature
gpt-image-1.5
gpt-image-1
gpt-image-1-mini
chatgpt-image-latest
v1/images/edits
Added support for application/json requests on /v1/images/edits for GPT image models. JSON requests use images (and optional mask) with image_url or file_id references instead of multipart uploads.
Feb 3
Update
gpt-5.2
gpt-5.2-codex
We have optimized our inference stack for API customers and GPT-5.2 and GPT-5.2-Codex now run ~40% faster. Model and model weights are unchanged.
January, 2026
Jan 15
Announcement
Announced Open Responses: an open-source spec for building multi-provider, interoperable LLM interfaces built on top of the original OpenAI Responses API.
Jan 14
Feature
gpt-5.2-codex
v1/responses
Released gpt-5.2-codex to the Responses API. GPT-5.2-Codex is a version of GPT-5.2 optimized for agentic coding tasks in Codex or similar environments. Read more here.
Jan 13
Feature
v1/realtime
Added dedicated SIP IP ranges for Realtime API. sip.api.openai.com does GeoIP routing, and will direct SIP traffic to the closest region. Learn more.
Jan 13
Update
gpt-realtime-mini
gpt-audio-mini
Updated the gpt-realtime-mini and gpt-audio-mini slugs to point to the 2025-12-15 snapshots. If you need the previous model snapshots, use gpt-realtime-mini-2025-10-06 and gpt-audio-mini-2025-10-06.
Jan 13
Update
sora-2
Updated the sora-2 slug to point to sora-2-2025-12-08. If you need the previous model snapshot, use sora-2-2025-10-06.
Jan 13
Update
gpt-4o-mini-tts
gpt-4o-mini-transcribe
Updated the gpt-4o-mini-tts and gpt-4o-mini-transcribe slugs to point to the 2025-12-15 snapshots. If you need the previous model snapshots, use gpt-4o-mini-tts-2025-03-20 and gpt-4o-mini-transcribe-2025-03-20. We currently recomend using gpt-4o-mini-transcribe over gpt-4o-transcribe for the best results.
Jan 9
Fix
gpt-image-1.5
chatgpt-image-latest
Fixed an issue where gpt-image-1.5 and chatgpt-image-latest were incorrectly using high fidelity for image edits through /v1/images/edits, even when fidelity was explicitly set to low (the default).
December, 2025
Dec 19
Update
gpt-image-1.5
chatgpt-image-latest
Added gpt-image-1.5 and chatgpt-image-latest to the Responses API image generation tool.
Dec 16
Feature
gpt-image-1.5
chatgpt-image-latest
Released gpt-image-1.5 and chatgpt-image-latest, our latest and most advanced models for image generation. Read more here.
Dec 15
Feature
gpt-realtime-mini
gpt-audio-mini
gpt-4o-mini-transcribe
gpt-4o-mini-tts
Released four new dated audio snapshots. These updates deliver reliability, quality, and voice fidelity improvements for real-time, voice-driven applications. Read more here.
* gpt-realtime-mini-2025-12-15
* gpt-audio-mini-2025-12-15
* gpt-4o-mini-transcribe-2025-12-15
* gpt-4o-mini-tts-2025-12-15
This launch also includes support for Custom voices for eligible customers.
Dec 11
Feature
gpt-5.2
gpt-5.2-chat-latest
v1/responses
v1/chat/completions
Released GPT-5.2, the newest flagship model in the GPT-5 model family. GPT-5.2 shows improvements over the previous GPT-5.1 in:
* General intelligence
* Instruction following
* Accuracy and token efficiency
* Multimodality—especially vision
* Code generation—especially front-end UI creation
* Tool calling and context management in the API
* Spreadsheet understanding and creation.
What's new in 5.2 is a new xhigh reasoning effort level, concise reasoning summaries, and new context management using compaction.
Dec 11
Feature
v1/responses/compact
Released client-side compaction. For long-running conversations with the Responses API, you can use the /responses/compact endpoint to shrink the context you send with each turn.
Dec 4
Feature
gpt-5.1-codex-max
v1/responses
Released gpt-5.1-codex-max to the Responses API. GPT-5.1-Codex is our most intelligent coding model optimized for long-horizon, agentic coding tasks. Read more here.
November, 2025
Nov 20
Feature
v1/realtime
Added support for DTMF key presses in the Realtime API. You can now receive DTMF events while using a Realtime sideband connection. See docs here for more information.
Nov 13
Feature
gpt-5.1
gpt-5.1-codex
gpt-5.1-chat-latest
gpt-5.1-codex-mini
v1/responses
v1/chat/completions
Released GPT-5.1, the newest flagship model in the GPT-5 model family. GPT-5.1 is trained to be especially proficient in:
* Steerability and faster responses when less thinking's required
* Code generation and coding use cases
* Agentic workflows
Note that GPT-5.1 defaults to a new none reasoning setting for faster responses when less thinking's required—different from the previous medium default setting in GPT-5.
Nov 13
Feature
Released enhanced role-based access controls (RBAC). Role-based access control (RBAC) lets you decide who can do what across your organization and projects—both through the API and in the Dashboard.
Nov 13
Feature
gpt-5.1-codex
gpt-5.1-codex-mini
v1/responses
Released gpt-5.1-codex and gpt-5.1-codex-mini to the Responses API. GPT-5.1-Codex is a version of GPT-5.1 optimized for agentic coding tasks in Codex or similar environments. Read more here.
Nov 13
Feature
Released extended prompt cache retention. Extended prompt cache retention keeps cached prefixes active for longer, up to a maximum of 24 hours. Extended Prompt Caching works by offloading the key/value tensors to GPU-local storage when memory is full, significantly increasing the storage capacity available for caching.
October, 2025
Oct 29
Feature
gpt-oss-safeguard-120b
gpt-oss-safeguard-20b
gpt-oss-safeguard-120b and gpt-oss-safeguard-20b are safety reasoning models built-upon gpt-oss. Read more here.
Oct 24
Feature
Released Enterprise Key Management (EKM). Enterprise Key Management (EKM) allows you to encrypt your customer content at OpenAI using keys managed by your own external Key Management System (KMS).
Oct 24
Feature
Released UK data residency.
Oct 6
Feature
gpt-5-pro
gpt-realtime-mini
gpt-audio-mini
gpt-image-1-mini
sora-2
sora-2-pro
v1/responses
v1/batch
v1/chat/completions
v1/videos
v1/realtime
v1/images/generations
Released several new features at OpenAI DevDay:
Released GPT-5 Pro, a version of GPT-5 that uses more compute to think harder and provide consistently better answers.
Released GPT-Realtime mini and gpt-audio-mini for more cost-efficient speech to speech performance.
Released gpt-image-1-mini for more cost-efficient image generation and editing.
Launched v1/videos for rich, detailed, and dynamic video generation and remixing with our latest Sora 2 and Sora 2 Pro models.
Launched Agent Builder for visually creating custom multi-agent workflows.
Launched ChatKit, an embeddable chat interface for deploying agents.
Released Trace Evals, Datasets, and Prompt Optimization tools.
Evals: Released Third-Party Model Support.
Launched Service health dashboard.
Oct 1
Feature
Released IP allowlist. IP allowlisting restricts API access to only the IP addresses or ranges you specify.
September, 2025
Sep 26
Feature
v1/responses
Added support for image and file as a tool call output in Responses API.
Sep 23
Feature
gpt-5-codex
v1/responses
Launched special-purpose model gpt-5-codex, built and optimized for use with the Codex CLI.
August, 2025
Aug 28
Feature
v1/realtime
The OpenAI Realtime API is now generally available. Learn more in our Realtime API guide.
Aug 21
Feature
v1/responses
Added support for connectors to the Responses API. Connectors are OpenAI-maintained MCP wrappers for popular services like Google apps, Dropbox, and more that can be used to give model read access to data stored in those services.
Aug 20
Feature
v1/conversations
v1/responses
v1/assistants
Released the Conversations API, which allows you to create and manage long-running conversations with the Responses API. See the migration guide to see a side-by-side comparison and learn how to migrate from an Assistants API integration to Responses and Conversations.
Aug 7
Feature
v1/chat/completions
v1/responses
Released GPT-5 family of models in the API, including gpt-5, gpt-5-mini, and gpt-5-nano.
Introduced the minimal reasoning effort value to optimize for fast responses in GPT-5 models (which support reasoning).
Introduced custom tool call type, which allows for freeform inputs to and outputs from the model when tool calling.
June, 2025
Jun 27
Feature
Launched support for Priority processing. Priority processing delivers significantly lower and more consistent latency compared to Standard processing while keeping pay-as-you-go flexibility.
Jun 24
Feature
o3-deep-research
o3-deep-research-2025-06-26
o4-mini-deep-research
o4-mini-deep-research-2025-06-26
v1/responses
Released o3-deep-research and o4-mini-deep-research, deep research variants of our o-series reasoning models optimized for deep analysis and research tasks. Learn more in the deep research guide.
Added support for async event handling with webhooks. Reduced and simplified pricing for the web search tool. Added support for the web search tool.
Jun 13
Feature
v1/responses
New reusable prompts are now available in the dashboard and Responses API. Via API, you can now reference templates created in the dashboard via the prompt parameter (with a prompt id, optional version) and supply dynamic variables that can include strings, images, or file inputs. Reusable prompts are not available in Chat Completions. Learn more.
Jun 10
Feature
o3-pro
v1/responses
v1/batch
Released o3-pro, a version of the o3 reasoning model that uses more compute to answer hard problems with better reasoning and consistency. Prices for the o3 model have also been reduced for all API requests, including batch and flex processing.
Jun 4
Feature
v1/fine_tuning
Added fine-tuning support with direct preference optimization for the models gpt-4.1-2025-04-14, gpt-4.1-mini-2025-04-14, and gpt-4.1-nano-2025-04-14.
Jun 3
Feature
v1/chat/completions
v1/realtime
New model snapshots available for gpt-4o-audio-preview and gpt-4o-realtime-preview. Released Agents SDK for TypeScript.
May, 2025
May 20
Feature
v1/responses
Added support for new built-in tools in the Responses API, including remote MCP servers and code interpreter. Learn more about tools.
May 20
Feature
v1/responses
v1/chat/completions
Added support for using strict mode for tool schemas when using parallel tool calling with non-fine-tuned models. Added new schema features, including string validation for email and other patterns and specifying ranges for numbers and arrays.
May 15
Feature
codex-mini-latest
v1/responses
v1/chat/completions
Launched codex-mini-latest in the API, optimized for use with the Codex CLI.
May 7
Feature
v1/fine-tuning
v1/responses
v1/chat/completions
Launched support for reinforcement fine-tuning. Learn about available fine-tuning methods. gpt-4.1-nano is now available for fine-tuning.
April, 2025
Apr 30
Feature
Launched support for Enhanced API Budget Alerts & Auto-recharge Limits.
Apr 23
Feature
v1/images/generations
v1/images/edits
Added a new image generation model, gpt-image-1. This model sets a new standard for image generation, with improved quality and instruction following.
Updated the Image Generation and Edit endpoints to support new parameters specific to the gpt-image-1 model.
Apr 16
Feature
v1/chat/completions
v1/responses
Added two new o-series reasoning models, o3 and o4-mini. They set a new standard for math, science, and coding, visual reasoning tasks, and technical writing.
Launched Codex, our code generation CLI tool.
Apr 14
Feature
gpt-4.1
gpt-4.1-mini
gpt-4.1-nano
v1/responses
v1/chat/completions
v1/fine_tuning
Added gpt-4.1, gpt-4.1-mini, and gpt-4.1-nano models to the API. These new models feature improved instruction following, coding, and a larger context window (up to 1M tokens). gpt-4.1 and gpt-4.1-mini are available for supervised fine-tuning. Announced deprecation of gpt-4.5-preview.
March, 2025
Mar 20
Update
v1/audio
Added gpt-4o-mini-tts, gpt-4o-transcribe, gpt-4o-mini-transcribe, and whisper-1 models to the Audio API.
Mar 19
Feature
o1-pro
v1/responses
v1/batch
Released o1-pro, a version of the o1 reasoning model that uses more compute to answer hard problems with better reasoning and consistency.
Mar 11
Feature
gpt-4o-search-preview
gpt-4o-mini-search-preview
computer-use-preview
v1/chat/completions
v1/assistants
v1/responses
Released several new models and tools and a new API for agentic workflows:
* Released the Responses API, a new API for creating and using agents and tools.
* Released a set of built-in tools for the Responses API: web search, file search, and computer use.
* Released the Agents SDK, an orchestration framework for designing, building, and deploying agents.
* Announced new models: gpt-4o-search-preview, gpt-4o-mini-search-preview, computer-use-preview.
* Announced plans to bring all Assistants API features to the easier to use Responses API, with an anticipated sunset date for Assistants in 2026 (after achieving full feature parity).
Mar 3
Feature
v1/fine_tuning/jobs
Added metadata field support to fine-tuning jobs.
February, 2025
Feb 27
Feature
GPT-4.5
v1/chat/completions
v1/assistants
v1/batch
Released a research preview of GPT-4.5—our largest and most capable chat model yet. GPT-4.5's high "EQ" and understanding of user intent make it better at creative tasks and agentic planning.
Feb 25
Feature
Launched the API Usage Dashboard Update. This update addresses requests for additional data filters, such as project selection, date picker, and fine-grained intervals. There’s also better support for viewing usage across different products and service tiers.
Feb 5
Feature
Introducing data residency in Europe. Read more here.
January, 2025
Jan 31
Feature
o3-mini
o3-mini-2025-01-31
v1/chat/completions
Launched o3-mini, a new small reasoning model that is optimized for science, math, and coding tasks.
Jan 21
Feature
o1
Expanded access to o1 model. The o1 series of models are trained with reinforcement learning to perform complex reasoning.
December, 2024
Dec 18
Feature
Launched Admin API Key Rotations, enabling customers to programmatically rotate their admin api keys.
Updated Admin API Invites, enabling customers to programmatically invite users to projects at the same time they are invited to organizations.
Dec 17
Feature
o1
gpt-4o
gpt-4o-mini
v1/fine_tuning
v1/chat/completions
v1/realtime
Added new models for o1, gpt-4o-realtime, gpt-4o-audio and more.
Added WebRTC connection method for the Realtime API.
Added reasoning_effort parameter for o1 models.
Added developer message role for o1 model. Note that o1-preview and o1-mini do not support system or developer messages.
Launched Preference Fine-tuning using Direct Preference Optimization (DPO).
Launched beta SDKs for Go and Java. Learn more.
Added Realtime API support in the Python SDK.
Dec 4
Feature
Launched Usage API, enabling customers to programmatically query activities and spending across OpenAI APIs.
November, 2024
Nov 20
Update
v1/chat/completions
Released gpt-4o-2024-11-20, our newest model in the gpt-4o series.
Nov 4
Feature
v1/chat/completions
Released Predicted Outputs, which greatly reduces latency for model responses where much of the response is known ahead of time. This is most common when regenerating the content of documents and code files with only minor changes.
October, 2024
Oct 30
Feature
gpt-4o-realtime-preview
gpt-4o-audio-preview
v1/chat/completions
Added five new voice types in the Realtime API and Chat Completions API.
Oct 17
Feature
gpt-4o-audio-preview
v1/chat/completions
Released new gpt-4o-audio-preview model for chat completions, which supports both audio inputs and outputs. Uses the same underlying model as the Realtime API.
Oct 1
Feature
v1/realtime
v1/chat/completions
v1/fine_tuning
Released several new features at OpenAI DevDay in San Francisco:
Realtime API: Build fast speech-to-speech experiences into your applications using a WebSockets interface.
Model distillation: Platform for fine-tuning cost-efficient models with your outputs from a large frontier model.
Image fine-tuning: Fine-tune GPT-4o with images and text to improve vision capabilities.
Evals: Create and run custom evaluations to measure model performance on specific tasks.
Prompt caching: Discounts and faster processing times on recently seen input tokens.
Generate in playground: Easily generate prompts, function definitions, and structured output schemas in the playground using the Generate button.
September, 2024
Sep 26
Feature
omni-moderation-latest
v1/moderations
Released new omni-moderation-latest moderation model, which supports both images and text (for some categories), supports two new text-only harm categories, and has more accurate scores.
Sep 12
Feature
o1-preview
o1-mini
v1/chat/completions
Released o1-preview and o1-mini, new large language models trained with reinforcement learning to perform complex reasoning tasks.
August, 2024
Aug 29
Feature
v1/assistants
Assistants API now supports including file search results used by the file search tool, and customizing ranking behavior.
Aug 20
Feature
gpt-4o
v1/fine_tuning
GA release for gpt-4o-2024-08-06 fine-tuning—all API users can now fine-tune the latest GPT-4o model.
Aug 15
Update
gpt-4o
v1/chat/completions
Released dynamic model for chatgpt-4o-latest—this model will point to the latest GPT-4o model used by ChatGPT.
Aug 6
Update
Launched Structured Outputs—model outputs now reliably adhere to developer supplied JSON Schemas.
Released gpt-4o-2024-08-06, our newest model in the gpt-4o series.
Aug 1
Update
Launched Admin and Audit Log APIs, allowing customers to programmatically administer their organization and monitor changes using the audit logs. Audit logging must be enabled within settings.
July, 2024
Jul 24
Update
Launched self-serve SSO configuration, allowing Enterprise customers on custom and unlimited billing to set up authentication against their desired IDP.
Jul 23
Update
Launched fine-tuning for GPT-4o mini, enabling even higher performance for specific use cases.
Jul 18
Update
Released GPT-4o mini, our affordable an intelligent small model for fast, lightweight tasks.
Jul 17
Update
Released Uploads to upload large files in multiple parts.
June, 2024
Jun 6
Update
Parallel function calling can be disabled in Chat Completions and the Assistants API by passing parallel_tool_calls=false.
.NET SDK launched in Beta.
Jun 3
Update
Added support for file search customizations.
May, 2024
May 15
Update
Added support for archiving projects . Only organization owners can access this functionality.
Added support for setting cost limits on a per-project basis for pay as you go customers.
May 13
Update
Released GPT-4o in the API. GPT-4o is our fastest and most affordable flagship model.
May 9
Update
Added support for image inputs to the Assistants API.
May 7
Update
Added support for fine-tuned models to the Batch API .
May 6
Update
Added stream_options: {"include_usage": true} parameter to the Chat Completions and Completions APIs. Setting this gives developers access to usage stats when using streaming.
May 2
Update
Added a new endpoint to delete a message from a thread in the Assistants API.
April, 2024
Apr 29
Update
Added a new function calling option tool_choice: "required" to the Chat Completions and Assistants APIs.
Added a guide for the Batch API and Batch API support for embeddings models
Apr 17
Update
Introduced a series of updates to the Assistants API , including a new file search tool allowing up to 10,000 files per assistant, new token controls, and support for tool choice.
Apr 16
Update
Introduced project based hierarchy for organizing work by projects, including the ability to create API keys and manage rate and cost limits on a per-project basis (cost limits available only for Enterprise customers).
Apr 15
Update
Released Batch API
Apr 9
Update
Released GPT-4 Turbo with Vision in general availability in the API
Apr 4
Update
Added support for seed in the fine-tuning API
Added support for checkpoints in the fine-tuning API
Added support for adding Messages when creating a Run in the Assistants API
Apr 1
Update
Added support for filtering Messages by run_id in the Assistants API
March, 2024
Mar 29
Update
Added support for temperature and assistant message creation in the Assistants API
Mar 14
Update
Added support for streaming in the Assistants API
February, 2024
Feb 9
Update
Added timestamp_granularities parameter to the Audio API
Feb 1
Update
Released gpt-3.5-turbo-0125, an updated GPT-3.5 Turbo model
January, 2024
Jan 25
Update
Released embedding V3 models and an updated GPT-4 Turbo preview
Added dimensions parameter to the Embeddings API
December, 2023
Dec 20
Update
Added additional_instructions parameter to run creation in the Assistants API
Dec 15
Update
Added logprobs and top_logprobs parameters to the Chat Completions API
Dec 14
Update
Changed function parameters argument on a tool call to be optional
November, 2023
Nov 30
Update
Released OpenAI Deno SDK
Nov 6
Update
Released GPT-4 Turbo Preview, updated GPT-3.5 Turbo, GPT-4 Turbo with Vision, Assistants API, DALL·E 3 in the API, and text-to-speech API
Deprecated the Chat Completions functions parameter in favor of tools
Released OpenAI Python SDK V1.0
October, 2023
Oct 16
Update
Added encoding_format parameter to the Embeddings API
Added max_tokens to the Moderation models
Oct 6
Update
Added function calling support to the Fine-tuning API
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