Claude Opus 4.6 is the newer model, released after GPT-5.1 Codex Max.
| Spec | Claude Opus 4.6 | GPT-5.1 Codex Max |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $25/M tokens | — |
| Context window | 1.0M tokens | — |
| Released | Feb 2026 | Dec 2025 |
| SWE-bench Verified | 80.8% | 77.9% |
Not enough votes to call it. On the specs, nothing separates them.
Claude Opus 4.6 takes Image Generation.
Claude Opus 4.6 uses 20.7x more emoji
Claude Opus 4.6 is the newer model, released after GPT-5.1 Codex Max.
| Spec | Claude Opus 4.6 | GPT-5.1 Codex Max |
|---|---|---|
| Input price | $5/M tokens | — |
| Output price | $25/M tokens | — |
| Context window | 1.0M tokens | — |
| Released | Feb 2026 | Dec 2025 |
| SWE-bench Verified | 80.8% | 77.9% |
Not enough votes to call it. On the specs, nothing separates them.
Claude Opus 4.6 takes Image Generation.
Claude Opus 4.6 uses 20.7x more emoji