Claude Sonnet 5 vs GPT-5.6 Sol
Claude Sonnet 5 vs GPT-5.6 Sol: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- Both models cost about the same.
- GPT-5.6 Sol has the larger context window (1.1M), useful for long documents and big codebases.
- GPT-5.6 Sol is the more recent release (Jul 9, 2026).
- GPT-5.6 Sol scores higher on independent tests (overall index 162.0 vs 156.3).
| Claude Sonnet 5 | GPT-5.6 Sol | |
|---|---|---|
| Company | Anthropic | OpenAI |
| Released | Jun 30, 2026 | Jul 9, 2026 ● |
| Overall index | 156.3 | 162.0 ● |
| GPQA Diamond | 90.5% | 93.5% ● |
| AIME math | 94.7% | 100% ● |
| FrontierMath | 65.6% | 89.1% ● |
| SimpleQA Verified | 33.7% | 69.7% ● |
| Input (per 1M tokens) | $2 | $2 |
| Output (per 1M tokens) | $10 | $10 |
| Cost for 1M input + 1M output tokens | $12.00 | $12.00 |
| Providers | 10 ● | 7 |
| Context | 1M | 1.1M ● |
| Max output | 128K | 128K |
| Inputs | Text, Image, Files | Files, Image, Text |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | — |