GPT-5.6 Sol vs Sonar Pro
Side-by-side API pricing and Artificial Analysis performance for GPT-5.6 Sol (OpenAI) and Sonar Pro (Perplexity). Green cells mark the better value in each row.
Prices updated Sep 17, 2026, 6:59 AM UTC · refreshed hourly
| GPT-5.6 Sol OpenAI | Sonar Pro Perplexity | |
|---|---|---|
| Pricing | ||
| Input $/1M | $2.00 | $3.00 |
| Output $/1M | $10.00 | $15.00 |
| Blended $/1M (3:1) | $4.00 | $6.00 |
| RAG example (30K in / 2K out) | $0.08 | $0.12 |
| Quality & speed | ||
| Intelligence Index | 47.1 | 7.6 |
| Coding Index | 77.4 | — |
| Agentic Index | 50.5 | — |
| Output speed (tok/s) | 74 | 0 |
| Time to first token | 71.18s | 0s |
| Specs | ||
| Context window | 1.05M | 200K |
| Input modalities | file, image, text | text, image |
FAQ
Which is cheaper, GPT-5.6 Sol or Sonar Pro?
GPT-5.6 Sol has the lower blended API price at $4.00 per 1M tokens (3:1 input:output mix), versus $6.00 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), GPT-5.6 Sol costs about $0.08 per request versus $0.12. Also compare context windows: GPT-5.6 Sol offers 1.05M and Sonar Pro offers 200K.
Which scores higher on Artificial Analysis benchmarks?
GPT-5.6 Sol leads on the Artificial Analysis Intelligence Index (47.1 vs 7.6). Check coding and agentic indices on this page for workload-specific tradeoffs.