Practitioner Benchmark: NVIDIA Nemotron 3 Nano 4B Fails All Custom Tests Where Qwen 3.5 4B Q8 Passed Every One

r/LocalLLaMA·medium signal

A developer who last week documented Qwen 3.5 4B Q8 passing all their demanding custom agentic benchmarks ran the same battery on NVIDIA's freshly released Nemotron 3 Nano 4B and found it 'completely disappointed' — failing across the board at the same size class. The post at 142 upvotes on r/LocalLLaMA is the first direct head-to-head practitioner signal from today's GTC model releases, suggesting NVIDIA's 4B entrant is not yet competitive with Qwen 3.5 at this tier despite the broader Nemotron coalition ambitions.