OpenAI API mTLS and X.509 workload identity federation are GA
Mutual TLS and X.509 workload identity federation can be configured in the Platform console, with access governed by organization roles and permissions, enabling keyless authentication.
Mutual TLS and X.509 workload identity federation can be configured in the Platform console, with access governed by organization roles and permissions, enabling keyless authentication.
whisper-1, gpt-4o-transcribe, gpt-4o-mini-transcribe and gpt-4o-transcribe-diarize shut down February 26, 2027; migrate to gpt-live-transcribe or gpt-transcribe. The Assistants API shut down August 26, 2026.
Use the Admin plugin for ChatGPT Work and Codex to analyze workspace usage, manage members and permissions, adjust limits, and act on admin requests.
GPT‑5.6 is now available in Kiro, helping developers plan, build, review, and test software with better price-performance.
GPT-5.6 Sol input pricing drops 20% and output pricing 33%. The promotional price runs at least through November 21, 2026.
Set background to transparent with png or webp output in the Images API and Responses image tool for gpt-image-2 and gpt-image-2-2026-04-21. jpeg is not supported.
OpenAI reaffirms Zero Data Retention for eligible API customers and previews Private Safety Processing for advanced AI safety without compromising data privacy.
Key Changes Version 0.22.0 is a minor release because it adds substantial runtime hardening and tightens an existing provider configuration contract. Applications that combine an explicit openai_client with organization or project must move those values to the AsyncOpenAI client.
ChatGPT Ads is expanding to 31 European markets. Learn how advertisers can reach people as they explore, compare options, and make decisions.
- feat(core): add model call timeouts feat(sandbox): add run-scoped sandbox working directories feat(sandbox): allow Docker sandboxes to disable networking feat(sandbox): add Modal sandbox resource options fix(core): honor exact call approval decisions fix(core): count Responses requests without usage fix(core): close all MultiProvider children after...
Key Changes This minor release does not introduce a known breaking SDK behavior change. The minor version bump is for the new provider-neutral testing APIs and the OpenAI Python v3 compatibility update.
Ultrafast mode is a new API service tier for GPT-5.6 Sol that runs up to 14x faster than Standard processing, available to select customers.
Preview Ultrafast, a new OpenAI API service tier that runs GPT-5.6 Sol up to 14× faster. Powered by Cerebras, it delivers up to 750 output tokens per second.
OpenAI and AWS are making Daybreak cybersecurity capabilities available through Amazon Bedrock to support enterprise security workflows.
Key Changes Version 0.20.0 is a minor release because it changes the implicit default model and includes a potentially breaking MCP dependency migration for applications with customized local HTTP transports. MCP v1 remains supported, and affected applications can migrate to httpx2 or pin mcp<2 .
Premium seats are now available on ChatGPT Business, with 5x more usage, no five-hour usage limit, and flexible seat options for every teammate.
Daybreak Blue gives approved defenders general-purpose models such as GPT-5.6 Sol for vulnerability discovery, code review and incident response, while Daybreak Red gives separately approved access to purpose-trained models.
ChatGPT introduces improved GPT-5.6 Sol with better accuracy and consistency, plus expanded access for free users and unlimited everyday chats with GPT-5.6 Luna.
The chat-latest snapshot now points to the latest model in ChatGPT for Plus and Pro users and will be updated regularly. OpenAI recommends GPT-5.6 Sol for production API usage.
Prompts over 272K tokens can now run in Fast mode on GPT-5.6 Sol, Terra and Luna, at up to 2.5x the speed of the Standard tier.
- fix: preserve completed tool guardrail results fix: redact invalid tool argument errors fix: defer non-stream session saves until output guardrails fix: honor resolved status before policy checks fix: cancel sibling work after concurrent failures fix: surface non-streaming content-filter refusals fix(mcp): derive streamable HTTP retry backoff from...
Explore new education plugins for ChatGPT Work and Codex that help K–12 teachers, college educators, and students learn, teach, research, and build.
Usage and Costs dashboards and the Usage and Costs APIs now support an API key dimension for reporting and analysis.
- fix: resolve agent tool name collisions consistently fix: reconcile resumed tool name collisions fix: persist the max-turns handler output to the session fix: report output guardrail results when a tripwire aborts the run fix: replace closed default loop in run_sync fix: honor falsey custom output extractors for agents as tools fix: report tool guardrail...
- feat: expose original callable through wrapped fix: report input guardrail results when a tripwire aborts the run fix: consolidate same-exception re-raises into bare raise across all modules fix(sandbox): preserve tagged EnvValue subclasses fix(modal): reject ephemeral paths during tar hydration fix(mcp): redact MCP prompt and resource transport errors...