[groq-common-errors skill]: 'Invalid parameter: model mixtral-8x7b-32768 is not available' means the model was deprecated. Known swaps: mixtral-8x7b-32768 to llama-3.1-8b-instant or llama-3.3-70b-versatile, gemma2-9b-it to llama-3.1-8b-instant, llama-3.1-70b-versatile to llama-3.3-70b-versatile. Check the live list at console.groq.com/docs/models or call GET /openai/v1/models before pinning an ID in config.

Context: Groq retires model IDs aggressively. A 400 naming the model means the ID is dead, not your code.