Near-Opus performance at Sonnet pricing. Agentic tool use, browser, and terminal access. $2/M input, $10/M output through August 31.
Switch with /model
Claude Sonnet 5 at a glance
Best combo of speed & intelligence (recommended).
| Spec | Claude Sonnet 5 |
|---|---|
| Model ID | claude-sonnet-5 |
| Context window | 1M tokens |
| Released | June 30, 2026 |
| Intelligence Index | 38.2 |
| Coding Index | 71.5 |
| Input | $2 per 1M tokens |
| Output | $10 per 1M tokens |
| Cache read | $0.20 per 1M tokens |
| Effective input in an agent loop | $0.74 per 1M tokens |
| Plans | Pro and above |
Specs, pricing and plans are from the Claude Sonnet 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 Sonnet 5
1cmd --model claude-sonnet-5Or type /model in a session and pick it. You can switch mid-session without losing context.
What real work costs on Claude Sonnet 5
| Task | Tokens (in · out) | Cost |
|---|---|---|
| Quick lookup / one-liner | 8K · 1K | $0.01 |
| Review a 500-line PR | 60K · 4K | $0.08 |
| Fix a bug (agent loop) | 180K · 12K | $0.24 |
| Refactor a module | 320K · 20K | $0.43 |
| Full-repo agent run | 900K · 45K | $0.99 |
Try Command Code
The best coding agent for open models, in your terminal or on your desktop.
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