Claude Sonnet 5.5 TRIAL

Sonnet 5.5 task cost is effort-sensitive; independent evaluation found maximum effort can cost more than Sonnet 5.

Next stepCompare low, medium and maximum effort on your traces for quality, output tokens, latency and cost.

RSS

Availability & adoption

pricing_per_million_tokens: {"input":"$2","output":"$10","cache_write":"$2.50","cache_read":"$0.20"}
availability: Claude Platform, Claude apps, Claude Code, AWS, Google Cloud and Microsoft Azure

2026-09-29New

2026-09-28Update

Original story: Anthropic releases Claude Sonnet 5.5 with faster, cheaper agent work