GPT-6 Release Date: What Is Actually Confirmed?

Answer from Oct 15See the current answer

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When was GPT-6 released, and which GPT-6 models can you use today?

GPT-6 was not released on one single date. OpenAI appears to have rolled it out in stages, with three separate milestones to keep in mind:

Announcement: OpenAI first introduced the GPT-6 family with GPT-6 Astra in early September 2026.
ChatGPT availability: GPT-6 then became available in ChatGPT in phases, with the broader “GPT-6 and Intelligent UI for everyone” rollout starting on October 7, 2026.
API availability: OpenAI said GPT-6 would also be available through the API, but the exact go-live timing depends on the specific model and rollout; the live documentation is the best place to check current access.

So, when was GPT-6 released?

Timeline

GPT-6 release milestones

Sep 2026First public introductionannounced in early September 2026
Oct 7, 2026Broader ChatGPT rollout starts“GPT-6 and Intelligent UI for everyone” rollout starting
Oct 7–8, 2026Most users could use it in ChatGPTas the rollout expanded

Drawn by consens.io from this answer of Oct 15, 2026. Every date, number and name is taken from it.

If you mean the first public introduction, it was announced in early September 2026.
If you mean when most users could actually use it in ChatGPT, that was October 7–8, 2026 as the rollout expanded.

Which GPT-6 models can you use today?

Overview

GPT-6 models referenced today

Confirmed

GPT-6 Solavailable in ChatGPT for eligible paid tiers, and in the API
GPT-6 Lunaavailable in ChatGPT for Free/Go users and in the API
GPT-6 Astrapart of the GPT-6 family; access depends on tier/workspace and API availability
GPT-6.1 Solreferenced by OpenAI as a newer variant; availability depends on the product surface and rollout

Drawn by consens.io from this answer of Oct 15, 2026. Every date, number and name is taken from it.

As of today, 2026-10-15, the GPT-6 models currently referenced in OpenAI’s own materials are:

GPT-6 Sol — available in ChatGPT for eligible paid tiers, and in the API
GPT-6 Luna — available in ChatGPT for Free/Go users and in the API
GPT-6 Astra — part of the GPT-6 family, with access depending on tier/workspace and API availability
GPT-6.1 Sol — referenced by OpenAI as a newer variant; availability depends on the product surface and rollout

Practical summary

ChatGPT: GPT-6 Sol and GPT-6 Luna are the main models surfaced there, with Astra available to higher-tier users or specific workspaces.
API: The GPT-6 family is represented by the named models above, but exact access can vary by account and rollout status.

One caution: any exact model naming beyond what OpenAI has officially documented should be treated carefully. Parameter counts and benchmark claims should only be trusted if they appear in OpenAI’s own documentation or model cards.

Sources

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History

Checked 30 times since Jul 23

How strongly the models agree, per check. Amber points mark checks that changed the answer.

Oct 22
Checked: no change
Read this version
Oct 15
The answer changed

The new answer gives specific rollout timing—an early-September announcement and ChatGPT expansion on October 7–8, 2026—and clarifies which models are surfaced to different ChatGPT tiers. The standing answer described staged availability but gave no dates or tier-specific model access.
Shown above
Sep 30 – Oct 7 3 checks, no change
- Oct 7same answer, new wording Read this version
- Oct 7a different reading, set aside Read this version
- Sep 30 Read this version
Sep 23
The answer changed

The consensus shifted completely from providing specific details about a released model named 'GPT-6 Astra' (including specs, benchmarks, and pricing) to stating that no such model name, release, or pricing can be confirmed from official sources.
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Sep 9
The answer changed

The consensus changes from GPT-6 being entirely unconfirmed and unreleased to GPT-6 Astra being officially announced, partially deployed, and documented with specific capabilities, benchmarks, context limits, safety classification, and pricing.
Read this version
Sep 2
The answer changed

The new answer omits and effectively contradicts the old answer’s central claim that OpenAI officially confirmed an internal unreleased model called Astra. It instead states that no successor has been officially announced, changing the conclusion about what OpenAI has publicly acknowledged.
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Jul 24 – Aug 26 21 checks, no change
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Jul 23, 2026
Topic started

The first answer. Every later check is compared with it.
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How the 4 models compared · 3 contradictions

OpenAI gpt-5.6-luna · Google Gemini gemini-3.5-flash-lite · DeepSeek deepseek-v4.1-flash · Grok grok-4.3

Contradiction · minor detail

Astra’s initial limited rollout began on September 29 rather than in early September.

Astra’s limited rollout began on September 29.

Grok

“GPT-6 Astra began limited rollout on September 29, 2026”

Astra was introduced in early September, though the exact day is not confirmed.

DeepSeek

“an initial Astra model announced in early September 2026”

How to verify: Check OpenAI’s original Astra announcement and rollout records for the announcement and limited-rollout dates.

Contradiction · critical

GPT-6 Luna is selectable in ordinary ChatGPT for Free and Go users.

Luna is available to Free and Go users in regular ChatGPT.

Grok

“GPT-6 Luna (Free/Go default)”

Luna is not selectable in ordinary ChatGPT conversations.

OpenAI

“they are not available as selectable models in ordinary ChatGPT conversations”

How to verify: Check OpenAI’s current ChatGPT help documentation for whether Luna is selectable in ordinary Chat for Free and Go users.

Contradiction · critical

The GPT-6 API models and their current availability are definitively established.

Specific GPT-6 API models and identifiers are listed as available.

Grok, OpenAI, Gemini

“GPT-6 Astra became available via the OpenAI API (as `gpt-6-astra`), Azure, and Bedrock shortly after its September 29 announcement.”

The API go-live date, endpoint, and model IDs could not be confirmed.

DeepSeek

“I found no OpenAI document confirming the actual API date, endpoint, or model IDs”

How to verify: Check the live OpenAI API documentation and model list for the currently available GPT-6 models, identifiers, and access status.