The week the frontier moved down the price curve
Claude Sonnet 5, Nano Banana 2 Lite and Claude Science, and The Deploy Log for this week. Every price and claim read off the publisher's own page, with a call on each.
Anthropic
Claude Sonnet 5
DEPLOYif you run coding or agentic workloads
WHAT SHIPPEDClaude Sonnet 5 is available everywhere today at $2 per million input tokens and $10 per million output tokens, with performance close to Opus 4.8 at lower prices and a strict improvement over Sonnet 4.6 on reasoning, tool use, coding, and knowledge work.
THE CATCHSonnet 5 shows a higher rate of misaligned behavior on Anthropic's automated behavioral audit than Opus 4.8 and Mythos Preview, and it launched with cyber safeguards enabled by default because its partial success rate on exploit development is slightly higher than Sonnet 4.6.
IF YOU RUNa team that moved agentic work to Opus-class models for capability, Sonnet 5 narrows the gap at Sonnet pricing
SOURCEAnthropic, Introducing Claude Sonnet 5
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