Anthropic Releases Claude Sonnet 5 — Near-Opus Agentic Performance at Half the Cost

Summary: Anthropic's Claude Sonnet 5, released June 30, closes the gap between mid-tier and frontier models for agentic workloads — at introductory pricing of $2/$10 per million tokens.

Key Facts

• Now the default model for Free and Pro tiers; immediately available on Max, Team, and Enterprise
• Introductory pricing: $2/M input, $10/M output (through August 31); standard pricing $3/$15 thereafter
• Autonomously plans and executes multi-step tasks using browsers, terminals, and external tools
• Substantial improvement over Sonnet 4.6 across reasoning, tool use, coding, and knowledge tasks

Why It Matters

Until now, complex agentic workflows demanded Opus-tier models, adding significant cost and latency. Sonnet 5 brings near-frontier capability to a price point accessible for large-scale enterprise automation — a development that could reshape how organizations design and budget AI agent deployments.

Read More

• Introducing Claude Sonnet 5 — Anthropic
• Anthropic launches Claude Sonnet 5 — TechCrunch