Claude Sonnet 5.5
Anthropic · Multimodal · Released Sep 2026
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
Input / 1M
$2.00
Output / 1M
$10.00
Cached input / 1M
$0.1
Context window
1M
Also billed
- Cache write
- $2.50 / 1M
Price history
Input (solid)Output (dashed)
Price change
- 30d
- in — out —
- 90d
- in decreased 0.0% out decreased 0.0%
- 1y
- in decreased 0.0% out decreased 0.0%
- Since launch
- in decreased 0.0% out decreased 0.0%
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 8 Oct 2026 | $2.00 | $10.00 | $0.1 | Imported from OpenRouter | openrouter.ai |
| 28 Sep 2026 | $2.00 | $10.00 | $0.2 | Imported from OpenRouter | openrouter.ai |