Nemotron 3.5 Lightning (free) vs GPT-5.6 Sol
Side-by-side API pricing and Artificial Analysis performance for Nemotron 3.5 Lightning (free) (NVIDIA) and GPT-5.6 Sol (OpenAI). Green cells mark the better value in each row.
Prices updated Sep 18, 2026, 5:22 AM UTC · refreshed hourly
| Nemotron 3.5 Lightning (free) NVIDIA | GPT-5.6 Sol OpenAI | |
|---|---|---|
| Pricing | ||
| Input $/1M | Free | $2.00 |
| Output $/1M | Free | $10.00 |
| Blended $/1M (3:1) | Free | $4.00 |
| RAG example (30K in / 2K out) | $0 | $0.08 |
| Quality & speed | ||
| Intelligence Index | 13.6 | 47.1 |
| Coding Index | 26.8 | 77.4 |
| Agentic Index | 6.1 | 50.5 |
| Output speed (tok/s) | 271 | 74 |
| Time to first token | 0.48s | 71.21s |
| Specs | ||
| Context window | 1M | 1.05M |
| Input modalities | text | file, image, text |
FAQ
Which is cheaper, Nemotron 3.5 Lightning (free) or GPT-5.6 Sol?
Nemotron 3.5 Lightning (free) has the lower blended API price at Free per 1M tokens (3:1 input:output mix), versus $4.00 for the other model. Prices are live from OpenRouter and refresh about hourly.
Which is better for RAG workloads?
For a typical RAG request (30K input / 2K output tokens), Nemotron 3.5 Lightning (free) costs about $0 per request versus $0.08. Also compare context windows: Nemotron 3.5 Lightning (free) offers 1M and GPT-5.6 Sol offers 1.05M.
Which scores higher on Artificial Analysis benchmarks?
GPT-5.6 Sol leads on the Artificial Analysis Intelligence Index (47.1 vs 13.6). Check coding and agentic indices on this page for workload-specific tradeoffs.