gpt-4o, gpt-4.1 and whisper-1 are shutting down: how to find every call in your code and n8n workflows

OpenAI shuts down gpt-4o, gpt-4o-mini and gpt-4.1 (and their dated snapshots) on 14 January 2027. tts-1 and gpt-4o-mini-tts go on 6 January, the old realtime models on 20 January, and whisper-1 and gpt-4o-transcribe on 26 February. Anthropic retires claude-sonnet-4-5-20250929 on 30 November 2026. After the date, calls to a retired model fail.

Searching for "gpt-4o" finds the obvious calls. These are the ones it misses:

I put the matching rules and a dated registry (OpenAI, Anthropic, Google, with a source link for every entry) into a small dependency-free Node script:

git clone https://github.com/Donrulezz/ai-model-retirement-scanner node ai-model-retirement-scanner/cli.js path/to/project Enter fullscreen mode Exit fullscreen mode where model shutdown move to example/summarize.py (line 8) gpt-4o-mini 2027-01-14 (in 78 days) gpt-6-luna example/support-workflow.json (Support replies > Reply model) gpt-4.1 2027-01-14 (in 78 days) gpt-6-luna example/support-workflow.json (Support replies > Transcribe call) whisper-1 2027-02-26 (in 121 days) gpt-transcribe or gpt-live-transcribe 3 finding(s) in 2 files, 2 due within 90 days (registry updated 2026-10-28). Enter fullscreen mode Exit fullscreen mode For n8n, export everything first ( n8n export:workflow --all --output=workflows.json ) and scan the file.

- run: git clone --depth 1 https://github.com/Donrulezz/ai-model-retirement-scanner /tmp/amrs - run: node /tmp/amrs/cli.js. --fail-within 60 Enter fullscreen mode Exit fullscreen mode The job fails when anything in the repo shuts down within 60 days, or has already shut down.

The replacements behave differently. For example, gpt-6-luna is a reasoning model: on Chat Completions, tool calls work only with reasoning_effort: none, and temperature / top_p must be removed unless the effort is none. Test your own prompts on the new model before the date, not on it.

Scanner (MIT): https://github.com/Donrulezz/ai-model-retirement-scanner. Issues welcome if a date moves or a model is missing.