A
Anthropic
claude-sonnet-4-5
Official priceModel overview
Claude Sonnet 4.5 balancing intelligence, speed, and cost.
- Context window
- 1,000,000 tokens
- Knowledge cutoff
- —
- Price last verified
- First observed
Descriptions, capabilities, and tariffs come from the linked source. First-party prices take priority; OpenRouter fallbacks are labelled.
Capabilities and formats
- text
- reasoning
- tools
- prompt caching
Performance references
No comparable benchmark data is currently available.
PRICE EVOLUTIONPrice history
Original observation and every later change, including any change of price source.
Original observed priceOfficial price
Input: $3Cached input: $0.3Cache write 5m: $3.75Cache write 1h: $6Output: $15
Price changeOfficial price unavailable
Input: —Cached input: —Cache write 5m: —Cache write 1h: —Output: —
Price changeOpenRouter price
Input: $3Cached input: $0.3Cache write 5m: $3.75Cache write 1h: —Output: $15
Price changeOfficial price
Input: $3Cached input: $0.3Cache write 5m: $3.75Cache write 1h: $6Output: $15
