What this model error usually means
NVIDIA: Nemotron 3 Nano 30B A3B (free) returning 400 / model capability unsupported means you should first confirm whether model ID nvidia/nemotron-3-nano-30b-a3b:free is visible for this NVIDIA key, then separate permission, context, capability, rate limit, or route issues.
- Model: nvidia/nemotron-3-nano-30b-a3b:free
- Provider: NVIDIA
- Status code: 400