Pyyan / Compare / Claude Sonnet 5 vs GPT-5.6 Sol
Claude Sonnet 5 vs GPT-5.6 Sol
2 of 5Language Models · verified 13 Aug 2026
Claude Sonnet 5Anthropiccurrent
GPT-5.6 SolOpenAIcurrent| Specification | Claude Sonnet 5 | GPT-5.6 Sol |
|---|---|---|
| Summary | Near-Opus quality on coding and agentic work at Sonnet cost. | Flagship tier of the GPT-5.6 family. |
| Context | 1M | 1M+ |
| Input ($/Mtok) | $3 | — |
| Output ($/Mtok) | $15 | — |
| Licence | Proprietary | Proprietary |
| Max output | 128K | — |
| Released | — | 9 Jul 2026 |
| Model ID | claude-sonnet-5 | — |
| Category | Language Models | Language Models |
| Official | Anthropic ↗ | OpenAI ↗ |
Highlighted rows are where these differ.
Claude Sonnet 5
- Adaptive thinking on by default
- New tokenizer — roughly 30% more tokens for the same text
- Introductory $2/$10 through 31 Aug 2026
Best for high-volume production.
GPT-5.6 Sol
- Three tiers: Sol, Terra, Luna
- Adjustable reasoning effort from none to max
- Broad rollout began 9 July 2026
Best for all-round work.