Pyyan / Compare / Claude Opus 5 vs GPT-5.6 Sol
Claude Opus 5 vs GPT-5.6 Sol
2 of 5Language Models · verified 13 Aug 2026
Claude Opus 5Anthropiccurrent
GPT-5.6 SolOpenAIcurrent| Specification | Claude Opus 5 | GPT-5.6 Sol |
|---|---|---|
| Summary | Complex agentic coding and enterprise work at half the cost of Fable 5. | Flagship tier of the GPT-5.6 family. |
| Context | 1M | 1M+ |
| Input ($/Mtok) | $5 | — |
| Output ($/Mtok) | $25 | — |
| Licence | Proprietary | Proprietary |
| Max output | 128K | — |
| Released | 24 Jul 2026 | 9 Jul 2026 |
| Model ID | claude-opus-5 | — |
| Category | Language Models | Language Models |
| Official | Anthropic ↗ | OpenAI ↗ |
Highlighted rows are where these differ.
Claude Opus 5
- Thinking on by default — a step change over Opus 4.8
- 512-token prompt-cache minimum, down from 1024
- Separate rate-limit bucket from the Opus 4.x pool
Best for agentic coding.
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.