Anthropic First-PartyVerified 2026-11-12
Claude Sonnet 5.5 API Pricing & Cost Rules
API Model ID: claude-sonnet-5-5 · Context Window: 1,000,000 tokens · Max Output: 128,000 tokens
Context Tiers & Token Rate Card (USD per 1M Tokens)
| Tier | Std Input | Std Output | Cache Read | Write (Short) | Write (Long) |
|---|---|---|---|---|---|
| Standard (<= 1M) | $2.00 | $10.00 | $0.1 | $2.5 | $4.00 |
Prompt Caching Rules
Supported: Yes (explicit)
Minimum Cacheable Prefix: 512 tokens
Hourly Cache Storage: $0
Read = 0.05x (95% off = $0.10/1M). Write = 1.25x (5m) or 2.0x (1h). Min 512 tokens. Claude 4.7+ tokenizer produces ~30% more tokens.
Batch API & Hosting Notes
Batch Supported: Yes (50% discount · Up to 24h)
Caching in Batch: Allowed + Batch discount stacks onto cache reads
50% off; stacks with caching ($0.05/1M read, $1.25 5m, $2.00 1h). Supports up to 300K output tokens in Batch with beta header.
US-only data residency (inference_geo: 'us') adds 1.1x multiplier.