Claude Sonnet is the mid-tier model in Anthropic's Claude family, positioned between Opus (the flagship) and Haiku (the fastest). Sonnet provides a balance of capability and cost suited for most production workloads. Articles cover Sonnet release coverage, tier-selection guidance, and operational patterns.
Claude Sonnet 5 landed on June 30, 2026, and Anthropic is positioning it as the most agentic Sonnet yet: near-flagship performance on…
Claude Opus, Sonnet, and Haiku are the three tiers of Anthropic’s Claude model family, designed to serve different workload profiles at different…