Claude Sonnet 5 vs GPT-5.6 Sol Pro
Side-by-side API pricing and Artificial Analysis performance for Claude Sonnet 5 (Anthropic) and GPT-5.6 Sol Pro (OpenAI). Green cells mark the better value in each row.
Prices updated Sep 17, 2026, 2:14 PM UTC · refreshed hourly
| Claude Sonnet 5 Anthropic | GPT-5.6 Sol Pro OpenAI | |
|---|---|---|
| Pricing | ||
| Input $/1M | $2.00 | $2.00 |
| Output $/1M | $10.00 | $10.00 |
| Blended $/1M (3:1) | $4.00 | $4.00 |
| RAG example (30K in / 2K out) | $0.08 | $0.08 |
| Quality & speed | ||
| Intelligence Index | 38.4 | — |
| Coding Index | 71.5 | — |
| Agentic Index | 44.3 | — |
| Output speed (tok/s) | 81 | — |
| Time to first token | 102.09s | — |
| Specs | ||
| Context window | 1M | 1.05M |
| Input modalities | text, image, file | file, image, text |
FAQ
Which is cheaper, Claude Sonnet 5 or GPT-5.6 Sol Pro?
Claude Sonnet 5 and GPT-5.6 Sol Pro currently have the same blended API price of $4.00 per 1M tokens.
Which is better for RAG workloads?
Both models cost about $0.08 for a 30K/2K RAG request at current rates. Context windows are 1M (Claude Sonnet 5) and 1.05M (GPT-5.6 Sol Pro).
Which scores higher on Artificial Analysis benchmarks?
Claude Sonnet 5 leads on the Artificial Analysis Intelligence Index (38.4 vs —). Check coding and agentic indices on this page for workload-specific tradeoffs.