Anthropic API
Claude Sonnet 5 API Pricing 2026 — Cost per 1 Million Tokens
Current Claude Sonnet 5 API pricing from Anthropic per 1 million tokens, including input, output and cached-token rates when available.
| Model | Rate | Price / 1M tokens |
|---|---|---|
| Claude Sonnet 5 High-performance Claude tier for coding and agents at permanent $2/$10 API pricing. 1M context · 128K max output · $2 input / $10 output per 1M tokens. Anthropic made the introductory $2 input / $10 output per 1M tokens pricing permanent on August 10, 2026; the previously planned $3/$15 pricing no longer applies. | Input | $2 |
| Claude Sonnet 5 | Output | $10 |
How API token cost is calculated
Multiply the number of tokens by the provider rate, then divide by 1,000,000.
cost = tokens × price per 1M ÷ 1,000,000
Example: 250,000 input tokens at $2 / 1M = $0.50.
AI Price History
- Claude Sonnet 5 — input $3 → $2
- Claude Sonnet 5 — output $15 → $10