Claude Sonnet 4 Pricing
Anthropic · Retiring soon. Migrate to Sonnet 4.6.
Save up to 70% on Claude Sonnet 4 API cost
Same model, same quality — pay less per token than the official API. Pay-as-you-go, no credit card required.
Other Anthropic Models
Claude Opus 4.8Claude Sonnet 4.6Claude Haiku 4.5Claude Opus 4.7Claude 4 OpusClaude Sonnet 4 Pricing Context
Pricing position within Anthropic
Claude Sonnet 4 sits in the middle of Anthropic's pricing at $3.00/1M input — 14% below the lineup average ($1.00 cheapest, $5.00 most expensive). 1 sibling cost less, 2 cost more. This mid-tier positioning makes it a sensible default when you're unsure which variant to pick.
When Claude Sonnet 4 is worth the cost
Claude Sonnet 4 is used for agentic workflows combining visual understanding with action — document processing pipelines that extract data and call APIs, visual Q&A systems, and multimodal agents. Tool calling enables it to trigger external functions based on what it sees in images.
Cost vs sibling models
What makes Claude Sonnet 4 different from sibling models: compared to Claude Opus 4.8 ($2.00/1M more expensive, 1M vs 200K context (larger)); Claude Sonnet 4.6 ($0.00/1M cheaper, 1M vs 200K context (larger)); Claude Haiku 4.5 ($2.00/1M cheaper, same 200K context). Choose Claude Sonnet 4 when vision input is needed.
Real-world cost scenarios
Real-world deployments: document processing pipelines (read invoice → extract fields → call accounting API), visual Q&A systems, and multimodal agents that act on what they see. Claude Sonnet 4 handles the full see-decide-act loop in a single model call.