Claude Opus 5.5 is live in Command Code Max and API.
Claude Opus 5.5 at a glance
Most intelligent Opus for agents and coding.
| Spec | Claude Opus 5.5 |
|---|---|
| Model ID | claude-opus-5-5 |
| Context window | 1M tokens |
| Released | September 22, 2026 |
| Intelligence Index | 57.6 |
| Input | $4 per 1M tokens |
| Output | $20 per 1M tokens |
| Cache read | $0.20 per 1M tokens |
| Effective input in an agent loop | $1.34 per 1M tokens |
| Plans | Max and above |
Specs, pricing and plans are from the Claude Opus 5.5 model page as of September 28, 2026, including any deal running that day, so they can differ from the launch pricing above. Intelligence and Coding Index scores are from Artificial Analysis.
Use Claude Opus 5.5
1cmd --model claude-opus-5-5Or type /model in a session and pick it. You can switch mid-session without losing context.
What real work costs on Claude Opus 5.5
| Task | Tokens (in · out) | Cost |
|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.02 |
| Review a 500-line PR | 60K · 4K | $0.16 |
| Fix a bug (agent loop) | 180K · 12K | $0.45 |
| Refactor a module | 320K · 20K | $0.80 |
| Full-repo agent run | 900K · 45K | $1.83 |
Try Command Code
The best coding agent for open models, in your terminal or on your desktop.
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