Model prices / Anthropic
Claude Sonnet 5.5 API pricing
Official API pricing for Claude Sonnet 5.5 (Anthropic) on Claude Developer Platform (Anthropic API): cache and off-peak prices, context length, open weights and regional availability, with sources and check dates.
- Context
- 1M
- Max output
- 128K
- Open weights
- No
- Current version
- 2026-09-28
GLOBAL · USD Claude Developer Platform (Anthropic API)
claude-sonnet-5-5| Tier | Input | Cached input | Cache write | Output |
|---|---|---|---|---|
| Standard | $2≈¥13.37 | $0.1≈¥0.669 | $2.5≈¥16.72 | $10≈¥66.86 |
cache_write is the 5-minute cache write price (1-hour writes are 2x input). Batch (50% off) and Fast mode not listed; US-only inference via inference_geo multiplies all prices by 1.1
Source
- https://platform.claude.com/docs/en/models/sonnet-5-5/overview · 2026-10-17
- https://platform.claude.com/docs/en/about-claude/models/overview · 2026-10-17
≈ marks values converted at the ECB reference rate, for comparison only; the published currency is authoritative.