What is Claude 3 Sonnet 20240229 V1 0 200k?
Claude 3 Sonnet 20240229 V1 0 200k is a chat model from anthropic (slug: anthropic-claude-3-sonnet-20240229-v1-0-200k). Pick Claude 3 Sonnet 20240229 V1 0 200k when you need Anthropic's mid-frontier coding and writing tier. It is the default Claude workhorse: cheaper than Opus, stronger than Haiku on long-context agent work.
Catalog snapshot 2026-06-27.