GPT-5.5
ReleasedModel GPT-5.5 is a model by OpenAI, released on 23 Apr 2026 (5 months ago).
- Where can it be used?
- Evidenced as usable in: GitHub Copilot, Microsoft 365 Copilot (verified for Cowork only)For 12 more recorded products there is no statement; that does not mean “not available”.Available in the provider’s API
- Did we test it?
- No lab run published yet
- Last change
- 5 months ago
- Evidence
- 5 sources from 5 sitesRegistry entry:
checked 3 Oct 2026
What backs this up?
Three kinds of evidence, kept apart. None of them proves AGI on its own; where one is missing, the page says so.
- In real productsEvidenced as usable in: GitHub Copilot, Microsoft 365 Copilot (verified for Cowork only)
- agi.jetzt PrüfstandNo published run yet.
- Public benchmarksNot recorded for this model yet.
A model and the product around it are different things: a result for one does not carry over to the other.
Announced and scoped lifecycle notices
These notices apply only to the named surfaces or API IDs. They do not replace current availability; an earliest possible date is not a confirmed shutdown date.
- GPT-5.5 · GitHub Copilot · WORK · GLOBAL · Deprecation · 19 Oct 2026 · Source · checked on 7 Oct 2026
- GPT-5.5 · Codex · WORK · all plans · Removal / shutdown · 14 Oct 2026 · ChatGPT sign-in only; API unaffected · Source · checked on 11 Oct 2026
- GPT-5.5 · ChatGPT · CONSUMER · all plans · Removal / shutdown · 14 Oct 2026 · Source · checked on 11 Oct 2026
- GPT-5.5 · ChatGPT Work · WORK · all plans · Removal / shutdown · 14 Oct 2026 · Source · checked on 11 Oct 2026
Where can it be used?
Only recorded availability statements are shown. A missing plan or surface means unknown, not unavailable. Where it applies only to a plan or a region, the row says so. “Rolling out” is not “available”. “Rollout reported” means a rollout was reported, but nothing has supported it for more than 90 days.
| Product | Status | since | Checked | Sources |
|---|---|---|---|---|
| GitHub CopilotCopilot · Business | Limited availability | not documented | checked 4 Oct 2026 | 1docs.github.com |
| GitHub CopilotCopilot · Enterprise | Limited availability | not documented | checked 4 Oct 2026 | 1docs.github.com |
| GitHub CopilotCopilot · Max | Limited availability | not documented | checked 4 Oct 2026 | 1docs.github.com |
| GitHub CopilotCopilot · Pro Plus | Limited availability | not documented | checked 4 Oct 2026 | 1docs.github.com |
| GitHub Copilot | Limited availability | not documented | checked 4 Oct 2026 | 1docs.github.com |
| Microsoft 365 CopilotCowork | Limited availability | not documented | checked 11 Oct 2026 | 1learn.microsoft.com |
| Microsoft 365 Copilot | Not verified | not verified |
Where a start is “not documented”, a source check found the state in place; the source names no start date.
No statement on record for 12 further products: ChatGPT, ChatGPT Work, Claude, Claude Code, Claude Enterprise, Claude Team, Codex, Gemini, Gemini for Google Workspace, Grok, Langdock, Le Chat Enterprise. No statement is not the same as not available.
Developer APIs
Developer access — not a statement about any work product.
| Product | Status | since | Checked | Sources |
|---|---|---|---|---|
| OpenAI APIAPI | Available | not documented | checked 3 Oct 2026 | 1developers.openai.com |
What did we test?
No lab run of GPT-5.5 is published yet.
Nothing is shown until a real run exists. See what the lab tests:
Lifecycle and history
The dates the provider confirmed, and every recorded period of availability. A current period shows its checked status; one without a source check is marked not verified.
What changed?
Sourced changes concerning this model, newest first.
- 5 months agoadded to the record on 29 Sept 2026
- 5 months agoadded to the record on 29 Sept 2026
1learn.chatgpt.com
- 5 months agoadded to the record on 29 Sept 2026
1learn.chatgpt.com
Evidence
Every source document behind the facts on this page, by domain.
| Domain | Docs | Documents |
|---|---|---|
| developers.openai.com | 1 | |
| docs.github.com | 1 | |
| learn.chatgpt.com | 1 | |
| learn.microsoft.com | 1 | |
| techcommunity.microsoft.com | 1 |