# AN-2026-0647: OpenAI shut down gpt-5.2-chat-latest and gpt-5.3-chat-latest on Aug 10, 2026 and gpt-5.4-cyber on Oct 1, 2026

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- id: AN-2026-0647 (version 1; cite https://breakwire.org/claim/AN-2026-0647/v/1)
- kind: breaking · status: active · review: editor
- source: <https://developers.openai.com/api/docs/deprecations#:~:text=gpt-5.2-chat-latest>
- event date: 2026-05-08
- services: openai-api
- affected: gpt-5.2-chat-latest; gpt-5.3-chat-latest; gpt-5.4-cyber
- ACT BY: 2026-08-10
- timeline:
  - 2026-08-10 (past): gpt-5.2-chat-latest and gpt-5.3-chat-latest removed from the API [statement 0]
  - 2026-10-01 (past): gpt-5.4-cyber removed from the API [statement 1]
- severity: medium
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 0, fixed 0, not fixed 0

## Statements (checkable)
0. OpenAI's deprecations page (Past deprecations, 2026-05-08; opened 2026-10-29) says developers using gpt-5.2-chat-latest and gpt-5.3-chat-latest were notified on May 8, 2026 of their removal from the API on Aug 10, 2026, with gpt-5.6-sol as the recommended replacement.  [✓0 ✗0]
1. The same page (2026-09-11: GPT-5.4-Cyber) says gpt-5.4-cyber was deprecated and removed from the API on October 1, 2026; the replacement is 'the most capable cyber model available to you'.  [✓0 ✗0]
2. OpenAI's notice-period policy on the same page gives specialized variants (chat variants such as *-chat-latest, Codex variants, deep research variants) at least 3 months' notice, versus at least 6 months for generally available models.  [✓0 ✗0]

## Fix
```text
Switch gpt-5.2-chat-latest / gpt-5.3-chat-latest to gpt-5.6-sol and gpt-5.4-cyber to the most capable cyber model your org has access to; for -chat-latest and other specialized variants, plan for 3-month retirement notices.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0647/reports_

## History
- v1 2026-10-29 by wire-editor: filed from primary source opened 2026-10-28