GPT-6.1 Terra Release
Released GPT-6.1 Terra, a fast, efficient model for visual reasoning, precise computer use, and clear, natural writing.
OpenAI changelog: October 2026
16 releases so far from to
Everything OpenAI shipped in October 2026, collected from official OpenAI sources. Each entry is dated and links to the page it came from.
October 2026 at a glance
October 2026 is OpenAI's 3rd busiest month of the last 12: 16 releases so far, close to its monthly average of 13. That is 9 releases fewer than September 2026, with the month still in progress. Most were Developer Tools (5), followed by Model (4) and Product (4).
Releases so far
16
-9 vs September 2026
Rank of 12 months
3rd
Average 13.2 a month
Most shipped
Developer Tools
5 releases
Notable OpenAI launches in October 2026
- Model
GPT-6.1 Terra Release
Released GPT-6.1 Terra, a fast, efficient model for visual reasoning, precise computer use, and clear, natural writing.
Source: OpenAI API Changelog - Model
Native Decisions integration in GPT-Live
Added native Decisions integration in GPT-Live. Your app can act while your user is speaking or react to what Live says. Let Live call Decisions directly through native delegation, or trigger decisions as input or output transcript deltas arrive.
Source: OpenAI API Changelog - Model
Ultrafast mode for GPT-6.1 Sol
Added Ultrafast mode for GPT-6.1 Sol in the Responses API. Use gpt-6.1-sol with service_tier: "ultrafast" to reduce the time between generated output tokens. It is available to all API users, subject to rate limits, with global processing and US and EU data residency. See Ultraf…
Source: OpenAI API Changelog
All OpenAI releases in October 2026
Newest first. Each entry links to the official page it came from.
October 202616 releases
Decisions API General Availability
The Decisions API is now generally available with gpt-6-luna. Cache shared input across requests for prompt-cache discounts, include images in individual question instructions, and pass structured data directly with input_json.
Service Tier Restrictions in Platform Settings
You can now choose which service tiers projects can use in Platform settings. Organization settings can restrict service tiers for all projects.
12-hour prompt caching in the API
You can now choose 12-hour prompt caching in the API. 12-hour prompt caching keeps shared instructions, tools, and context cached longer to benefit from lower cached-input pricing, even when requests are hours apart. 12-hour cache writes cost 2.5x the input token price.
Released prompt-to-voice for all API customers
Create custom voices from text descriptions via API or voice Playground, reusable in GPT-Live sessions. Free voice creation with standard GPT-Live billing for speech generation
OpenAI-hosted sandboxes in the Agents API
OpenAI-hosted sandboxes in the Agents API now include the Artifact SDK and skills for creating and editing spreadsheets, presentations, and Word documents. Added Ultrafast mode to the Agents API. Set agent.service_tier to ultrafast with a supported model to reduce the time betwe…
Nine natural voices for GPT-Live
Added nine natural voices for GPT-Live: Nuri, Juni, and Flitz (German); Brise and Sillage (French); Nira (Hindi); Harema and Shida (Japanese); and Noeul (Korean).
Native Decisions integration in GPT-Live
Added native Decisions integration in GPT-Live. Your app can act while your user is speaking or react to what Live says. Let Live call Decisions directly through native delegation, or trigger decisions as input or output transcript deltas arrive.
Prewarm OpenAI-hosted sandbox in the Agents API
You can now pre-warm an OpenAI-hosted sandbox before attaching it to an Agents API session. Prewarming improves latency by creating and configuring the sandbox before a user finishes sending their message. This means the user doesn't have to wait for all this work to complete. O…
Ultrafast mode for GPT-6.1 Sol
Added Ultrafast mode for GPT-6.1 Sol in the Responses API. Use gpt-6.1-sol with service_tier: "ultrafast" to reduce the time between generated output tokens. It is available to all API users, subject to rate limits, with global processing and US and EU data residency. See Ultraf…
Update chat-latest
Updated the chat-latest snapshot, which points to the latest model available in ChatGPT for Plus, Pro, Business and Enterprise users. We recommend leveraging the GPT-6 model family for production API usage, but feel free to use this model to test the latest improvements for chat…
ChatLatest snapshot update
Updated the chat-latest snapshot, which points to the latest model available in ChatGPT for Plus, Pro, Business and Enterprise users.
Simplified API Usage Tiers
Simplified API usage tiers from five to three: Build, Launch, and Grow. Organizations automatically upgrade as total credit purchases reach tier minimums.
Decisions API Beta Release
Released the Decisions API in beta with gpt-6-luna. Turn text and images into typed answers 10x faster than the Responses API.
HIPAA Compliance Support in API Organization Settings
Added an in-product flow for HIPAA compliance support in API Organization settings > General. Admins of eligible organizations can now accept the standard Business Associate Agreement (BAA) and enable HIPAA compliance support for their organization. See the Help Center for eligi…
Codex CLI 0.160: projectless sessions and Guardian history
New features including keyboard-accessible 'Show more' action for browsing older tasks, middle-click paste in Linux terminals, projectless session support, and Guardian review capabilities.
Where October 2026 sits
OpenAI releases per month, for October 2026 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 October 2026
22 of the companies we track shipped in October 2026; OpenAI ranks 4th by number of releases.
Newsletter
Stay ahead of the month's AI releases without living in every company feed.
One monthly digest of the sharpest launches, model drops, and product moves from every company we track, delivered in one clear read.
Monthly signal
The standout launches, model drops, and platform moves worth tracking.
Zero feed fatigue
One tight read instead of bouncing between company blogs and timelines.
Built for operators
Clear summaries you can scan fast and forward to the team when needed.
Monthly dispatch
Subscribe to the newsletter
Get a clean monthly dispatch covering the launches that mattered, not every minor product breadcrumb.
Monthly digestMajor launchesFast summaries
One email each month, tuned for signal over noise.