Claude Sonnet 5.5 Pricing
BalancedAnthropic · 1M tokens context
Claude Sonnet 5.5 from Anthropic costs $2.00 per 1 million input tokens and $10.00 per 1 million output tokens as of September 2026 (live OpenRouter data). The model supports a 1,000,000-token context window (approximately 750,000 words) with a 128K-token maximum output. A typical 1,000-token request costs $0.0020 in input charges; a 10,000-token request costs $0.0200.
| Input price | $2.00 / 1M tokens |
|---|---|
| Output price | $10.00 / 1M tokens |
| Output / input ratio | 5.0× |
| Context window | 1,000,000 tokens (~750,000 words) |
| Maximum output | 128,000 tokens |
| Cost per 1K tokens (input) | $0.0020 |
| Tier | Balanced |
| Last verified |
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.
Input Price
$2.00
per 1 million tokens
Output Price
$10.00
per 1 million tokens
Context Window
1M tokens
max 128K output
Cost Examples
| Request Type | Tokens | Input Cost | Output Cost |
|---|---|---|---|
| 1,000 word article | 1,333 | $0.00267 | $0.004 |
| 10-page document (2,500 words) | 3,333 | $0.00667 | $0.01 |
| 1,000 lines of code | 5,000 | $0.01 | $0.015 |
| 100K token document | 100,000 | $0.20 | $0.30 |
Output cost estimated at 30% of input token count. Use the calculator for exact figures.
Strengths
- ✓Massive 1M-token context window
- ✓Multimodal: understands images as well as text
- ✓Strong general-purpose performance
Limitations
- –Quality and availability can vary by hosting provider
- –Quality and availability can vary by hosting provider
Best Use Cases
Calculate Claude Sonnet 5.5 Costs
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Open Calculator →Claude Sonnet 5.5 — FAQ
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