together-upgrade-migration

# Together AI Upgrade & Migration ## Overview Together AI provides an OpenAI-compatible inference platform hosting 100+ open-source models (Llama, Mixtral, Qwen, FLUX) with fine-tuning and batch inference capabilities. The API lives at `api.together.xyz/v1` and follows OpenAI's chat completions format. Tracking model deprecations and API changes matters because Together regularly retires older model versions, updates model IDs when weights are refreshed, and changes fine-tuning job schemas — causing silent failures when a model ID that worked yesterday returns `404` today with no advance warning in the response. ## Version Detection ```typescript const TOGETHER_BASE = "https://api.together.xyz/v1"; async function detectTogetherChanges(apiKey: string): Promise<void> { // List available models and check for deprecations const res = await fetch(`${TOGETHER_BASE}/models`, { headers: { Authorization: `Bearer ${apiKey}` }, }); const data = await res.json(); const models = data.data ?? data; // Check if commonly used models are still available const trackedModels = [ "meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo", "mistralai/Mixtral-8x7B-Instruct-v0.1", "Qwen/Qwen2.5-72B-Instruct-Turbo", ]; for (const modelId of trackedModels) { const available = models.some((m: any) => m.id === modelId); if (!available) console.warn(`Model deprecated or renamed: ${modelId}`); } // Check API version headers const version = res.headers.get("x-tog...