AI model shutdown migration guides
What to do before a model you depend on is retired. Facts from official provider pages, re-checked daily.
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What to Do Before Claude Sonnet 4.5 Shuts Down on November 30, 2026
Anthropic retires claude-sonnet-4-5-20250929 on the Claude API on Nov 30, 2026 (replacement: claude-sonnet-5-5). Bedrock and Vertex dates differ. Step-by-step migration checklist.
What to Do Before OpenAI GPT-5 and o3 Shut Down on December 11, 2026
OpenAI removes gpt-5, gpt-5-mini, gpt-5-nano, gpt-5-pro, o3, o3-pro and their dated snapshots from the API on Dec 11, 2026. Replacements, parameter gotchas and a migration checklist.
Free: AI Model Migration Checklist
Grep commands for code/YAML/Terraform, direct API vs Bedrock/Vertex/Azure date diff, replacement parity matrix, eval + shadow-traffic cutover, post-shutdown 404 guardrails. Preview it, or get it now:
Grep commands for code/YAML/Terraform, direct API vs Bedrock/Vertex/Azure date diff, replacement parity matrix, eval + shadow-traffic cutover, post-shutdown 404 guardrails. Preview it, or get it now: