OpenAI retiring GPT-3.5 Turbo by June 2025 — migrate to GPT-4o-mini

AI Impact Summary

OpenAI is retiring GPT-3.5 Turbo with a hard removal date of June 30, 2025. Any application still calling this model endpoint will fail after that date. GPT-4o-mini is the recommended replacement at a comparable price point, but fine-tuned 3.5 models require additional migration planning as fine-tunes do not automatically transfer.