Claude Sonnet 5
Anthropic's Claude Sonnet 5 language model with 1M context and adaptive thinking.
Claude Sonnet 5 is presented in the supplied evidence context as a language-model release from Anthropic, launched across Claude, the API, and Claude Code with a 1M-token context window, adaptive thinking, and introductory $2/$10 per-million-token pricing.
Pricing
Standard Claude API pricing. Prompt-cache writes are $2.50 per 1M tokens for 5 minutes and $4 per 1M tokens for 1 hour; cache hits/refreshes are $0.20 per 1M tokens. Batch pricing is separate.
Anthropic's current pricing table lists Claude Sonnet 5 at $2 per 1M input tokens and $10 per 1M output tokens. The same page lists cache hits at $0.20 per 1M tokens; Anthropic's launch post confirms the $2/$10 pricing and says it became permanent on August 10, 2026.