Claude 3.5 Sonnet API Cost Calculator
Estimate your monthly API costs for Claude 3.5 Sonnet from Anthropic.
Pricing per 1M tokens
Pricing last verified: Mar 21, 2026
30-Day Price History
Solid line: input price · Dashed line: output price
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Cost Breakdown
Compare with Similar Models
| Model | Input/1M | Output/1M |
|---|---|---|
| Claude opus 4 6 V1anthropic.claude sonnet 4 6anthropic.Claude haiku 4 5 20251001 V1 Anthropic | $5.00 | $25.00 |
| Claude opus 4 6Claude sonnet 4 6Claude haiku 4 5 Anthropic | $5.00 | $25.00 |
| Claude opus 4 6Claude sonnet 4 6Claude haiku 4 5aws Anthropic | $5.00 | $25.00 |
| Claude Opus 4.5 Anthropic | $5.00 | $25.00 |
| Claude Opus 4.6 Anthropic | $5.00 | $25.00 |
Frequently Asked Questions
How much does Claude 3.5 Sonnet cost per token?
Claude 3.5 Sonnet is priced at $6.00 per 1M input tokens and $30.00 per 1M output tokens. Use the calculator above to estimate your monthly costs based on your usage volume.
What is the context window for Claude 3.5 Sonnet?
Claude 3.5 Sonnet has a context window of 200K tokens (200,000 tokens). The maximum output length is 8.2K tokens.
Does Claude 3.5 Sonnet support image inputs (vision)?
Yes, Claude 3.5 Sonnet supports vision/image inputs. You can send images as part of your prompts.
Does Claude 3.5 Sonnet support function calling (tool use)?
Yes, Claude 3.5 Sonnet supports function calling (also called tool use). You can define custom functions that the model can invoke as part of its responses.
How does Claude 3.5 Sonnet compare to similar models?
Claude 3.5 Sonnet costs $6.00 input and $30.00 output per 1M tokens. Claude Opus 4.6 is less expensive at $5.00 input and $25.00 output per 1M tokens. See the "Compare with Similar Models" table above, or visit the Claude Opus 4.6 page at /tools/cost-calculator/anthropic/claude-opus-4-6.