Topic
4 posts about Model Deprecation from Simon Carter.
Anthropic has formally deprecated claude-mythos-preview with a June 30 2026 retirement date, directing developers to migrate to claude-mythos-5 — which is currently suspended.
Anthropic has deprecated claude-opus-4-1-20250805 with a retirement date of August 5, 2026. Opus 4.8 is the recommended replacement.
GPT-4.5 leaves ChatGPT on June 27, 2026 and o3 on August 26. No API changes. Here's what it means for you.
Anthropic retires claude-sonnet-4-20250514 and claude-opus-4-20250514 from the API on June 15, 2026. Pinned version strings will error. Here's how to migrate.