Anthropic lowered prompt cache read pricing on Claude Sonnet 5.5 from $0.20 to $0.10 USD per million tokens (0.05x the base input price instead of 0.1x), effective October 7, 2026. Cache writes and all other prices are unchanged, so applications that reuse long prompts on this model will see lower read costs.
Read the full story on platform.claude.com
What to doReview your prompt caching costs on Claude Sonnet 5.5 to capture the reduced read price; no code changes are needed.
- Provider
- Anthropic
- Source
- platform.claude.com