Compare, 2 models
Side by side.
Claude Opus 4.6 and Claude Opus 5.5 on every board at least two of them share. Blue marks the best in each row.
Specs
List prices, context and published output speed. Blue marks the best in each row.
| Spec | Claude Opus 4.6Anthropic | Claude Opus 5.5Anthropic |
|---|---|---|
| Lab | Anthropic | Anthropic |
| Type | Language | Language |
| Released | Feb 5, 2026 | Sep 22, 2026 |
| Input price$ per 1M tokens | $5.00 | $4.00 |
| Output price$ per 1M tokens | $25.00 | $20.00 |
| Blended price3 input tokens per output | $10.00 | $8.00 |
| Contexttokens | 1M | 1M |
| Open weights | No | No |
| Output speedTok / s | n/a | 96 |
Benchmarks
Every board where at least two of these models have a published score. Each score links to its source.
| Board | Claude Opus 4.6Anthropic | Claude Opus 5.5Anthropic |
|---|---|---|
| LMArena textOverall, higher is better | 1503High, style control | 1509High, style control |
| ARC-AGI-2Reasoning and knowledge, higher is better | 69.2% | 93.3%high setting |
n/a means the board has not published a score for that model.