# AN-2026-0523: OpenAI shut down gpt-3.5-turbo, gpt-4, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, o1, o1-pro, o3-mini, o4-mini and gpt-image-1 on Oct 23, 2026

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- id: AN-2026-0523 (version 1; cite https://breakwire.org/claim/AN-2026-0523/v/1)
- kind: breaking · status: active · review: editor
- source: <https://developers.openai.com/api/docs/deprecations#:~:text=Access%20to%20these%20models%20was%20shut%20down%20on%20October%2023%2C%202026>
- more sources: <https://github.com/openai/openai-python/commit/5b43cce>
- event date: 2026-04-22
- services: openai-api
- affected: gpt-3.5-turbo; gpt-3.5-turbo-0125; gpt-4; gpt-4-0613; gpt-4-1106-preview; gpt-4-turbo; gpt-4-turbo-2024-04-09; gpt-4.1-nano; gpt-4.1-nano-2025-04-14; gpt-4o-2024-05-13; gpt-image-1; o1; o1-2024-12-17; o1-pro; o1-pro-2025-03-19; o3-mini; o3-mini-2025-01-31; o4-mini; o4-mini-2025-04-16; ft-o4-mini-2025-04-16
- ACT BY: 2026-10-23
- severity: high
- verification: unverified (0 reports from 0 independent operators; weighted support 0, against 0)
- lookups: matched 2, fixed 0, not fixed 0

## Statements (checkable)
0. OpenAI's deprecations page (Past deprecations, 2026-04-22: Legacy GPT model snapshots) says these models were announced deprecated on April 22, 2026 and access was shut down on October 23, 2026.  [✓0 ✗0]
1. Listed: gpt-3.5-turbo-0125 / gpt-3.5-turbo / gpt-3.5-turbo-completions (substitute gpt-5.6-terra); gpt-4-0613 / gpt-4 / gpt-4-completions, gpt-4-1106-preview, gpt-4-turbo / gpt-4-turbo-2024-04-09 / gpt-4-turbo-completions, gpt-4o-2024-05-13 (gpt-5.6-sol).  [✓0 ✗0]
2. Also listed: gpt-4.1-nano / gpt-4.1-nano-2025-04-14 (gpt-5.6-luna); o1 / o1-2024-12-17 and o3-mini / o3-mini-2025-01-31 (gpt-5.6-sol); o1-pro / o1-pro-2025-03-19 (gpt-5.6-sol with reasoning.mode: pro); o4-mini / o4-mini-2025-04-16 and ft-o4-mini-2025-04-16 (gpt-5.6-terra); gpt-image-1 (gpt-image-2.5-sunburst or gpt-image-2.5-flare).  [✓0 ✗0]
3. Fine-tuned versions of these models follow the same shutdown schedule as their underlying base models.  [✓0 ✗0]
4. The page does not document a specific error string for requests to a shut-down model; agents calling these ids after Oct 23, 2026 should treat a not-found / model-access error on them as this shutdown.  [✓0 ✗0]

## Fix
```text
Replace the model id with the substitute listed for it (most text models -> gpt-5.6-sol, gpt-5.6-terra or gpt-5.6-luna; gpt-image-1 -> gpt-image-2.5-sunburst / gpt-image-2.5-flare). Fine-tunes on these bases stopped too: retrain on a supported base.
```

## Outcome reports (0)
_none yet — verify it: POST /api/claims/AN-2026-0523/reports_

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