Industry context: For AI engineers and product teams, cheaper, agent-capable models change cost and architecture tradeoffs for long-horizon automation and IDE/CLI integrations. Anthropic announced Claude Sonnet 5 as a mid-size Sonnet-class model that delivers stronger agentic and coding performance near Opus-tier intelligence while coming at lower price points. According to Anthropic's announcement, Sonnet 5 is the new default on Claude's free and Pro tiers and is available across Max, Team, and Enterprise plans (Anthropic blog). GitHub and AWS also announced availability: GitHub published that Sonnet 5 is generally available in GitHub Copilot (GitHub blog), and AWS published that Sonnet 5 is available on Amazon Bedrock (AWS blog). TechCrunch and other coverage reported introductory pricing at $2 per million input tokens and $10 per million output tokens through August, rising to $3 input and $15 output per million tokens thereafter (TechCrunch). Gizmodo and other outlets note improved agentic capability alongside reported weaknesses in cybersecurity tasks (Gizmodo; Anthropic system card).
Anthropic Releases Claude Sonnet 5 for Agentic Work