DTMF key press support in the Realtime API
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.
OpenAI changelog: November 2025
7 releases from to
Everything OpenAI shipped in November 2025, collected from official OpenAI sources. Each entry is dated and links to the page it came from.
November 2025 at a glance
November 2025 was OpenAI's busiest month of the 12 months to then: 7 releases, about 4.2× its monthly average of 2. That was the same number as in October 2025. Most were Model (4), followed by API (2) and Enterprise & Security (1).
Releases
7
+0 vs October 2025
Rank of 12 months
1st
Average 1.7 a month
Most shipped
Model
4 releases
Notable OpenAI launches in November 2025
- Model
GPT-5.1-Codex-Max
Introducing GPT-5.1-Codex-Max, a faster and more intelligent agentic coding model with enhanced reasoning capabilities
Source: Codex Changelog - Model
GPT-5.1-Codex and Codex-Mini in the API
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.
Source: OpenAI API Changelog - Model
GPT-5.1
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 n…
Source: OpenAI API Changelog
All OpenAI releases in November 2025
Newest first. Each entry links to the official page it came from.
November 20257 releases
GPT-5.1-Codex-Max
Introducing GPT-5.1-Codex-Max, a faster and more intelligent agentic coding model with enhanced reasoning capabilities
Role-based access controls (RBAC)
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.
GPT-5.1-Codex and Codex-Mini in the API
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.
GPT-5.1
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 n…
Extended prompt cache retention
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 t…
GPT-5-Codex-Mini
Introduction of GPT-5-Codex-Mini as a cost-effective alternative to GPT-5-Codex with 4x more usage capacity
Where November 2025 sits
OpenAI releases per month, for November 2025 and the 11 months before it. A taller bar means more releases that month; the dated entries for each month are on its own page.
Other companies in November 2025
11 of the companies we track shipped in November 2025; OpenAI ranks 2nd by number of releases.
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