o3-mini-2025-01-31

OpenAI lists this model ID as deprecated with a shutdown date of 2026-10-23.

Shutdown date: 2026-10-23
Status: deprecated
Official replacement: gpt-5.6-sol
Replacement confidence: high
Provider: OpenAI
Official pages checked: 2026-08-14

Primary evidence

Provider-owned documentation

OpenAI official deprecation page ↗

Official substitute model.

Migration caution

An official replacement can change output quality, price, latency, rate limits, token limits, and supported parameters. SunsetPR only considers a deterministic edit when the code context is also high confidence.

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Provider documentation remains the source of truth. Static analysis cannot resolve remote configuration or arbitrary runtime expressions; those remain explicitly unconfirmed.