Claude Sonnet 5

Anthropic's mid-tier Claude model, used by many coding agents.

Best for: Coding agents that need strong code quality at a lower price than Opus.
Open source: no
Pricing: API: input $2 / MTok, output $10 / MTok; prompt caching read $0.20 / write $2.50 per MTok; 50% off with batch processing. (source: official page, checked 2026-10-21)
Other AI coding models: Claude Opus 5
Last checked: 2026-10-21 (pricing 2026-10-21 · licence not checked)

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Pricing is copied from each tool's official page on the date shown and left out where we couldn't read it; prices change. Licences were checked on GitHub; 'unconfirmed' means not verified. No affiliate links.