Claude Sonnet 4.6 is the newer model, released after GPT-5.1 Codex Max.
| Spec | Claude Sonnet 4.6 | GPT-5.1 Codex Max |
|---|---|---|
| Input price | $3/M tokens | — |
| Output price | $15/M tokens | — |
| Context window | 1.0M tokens | — |
| Released | Feb 2026 | Dec 2025 |
| SWE-bench Verified | 79.0% | 77.9% |
Not enough votes to call it. On the specs, nothing separates them.
Claude Sonnet 4.6 uses 19.1x more emoji
Claude Sonnet 4.6 is the newer model, released after GPT-5.1 Codex Max.
| Spec | Claude Sonnet 4.6 | GPT-5.1 Codex Max |
|---|---|---|
| Input price | $3/M tokens | — |
| Output price | $15/M tokens | — |
| Context window | 1.0M tokens | — |
| Released | Feb 2026 | Dec 2025 |
| SWE-bench Verified | 79.0% | 77.9% |
Not enough votes to call it. On the specs, nothing separates them.
Claude Sonnet 4.6 uses 19.1x more emoji