Claude Sonnet 5.5 pricing
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. Claude Sonnet 5.5 from Anthropic costs $2.00 per 1M input tokens and $10.00 per 1M output tokens. Cached input is $0.200 per 1M. Context window 1,000,000 tokens.
API id claude-sonnet-5.5 · Anthropic · source · updated 2026-09-29 · general-purpose
$2.00
Input / 1M tokens
$10.00
Output / 1M tokens
$0.200
Cached input / 1M
1M
Context window
Claude Sonnet 5.5 specifications
- Provider
- Anthropic
- API id
claude-sonnet-5.5- Model type
- general-purpose
- Context window
- 1M tokens
- Max output
- 128K tokens
- Currency
- USD
- Price source
- First-party
- Last checked
- 2026-09-29
Claude Sonnet 5.5 across providers
The same model, priced by every seller we track. Ranked by the cost of 1M input + 1M output tokens, standard tier; savings measured against buying from the vendor directly.
| Provider | Input /1M | Cached /1M | Output /1M | 1M in + 1M out | vs vendor |
|---|---|---|---|---|---|
| $2.00 | $0.200 | $10.00 | $12.00 | — | |
OpenRouterHost | $2.00 | $0.200 | $10.00 | $12.00 | — |
What Claude Sonnet 5.5 costs in practice
| Workload | Input tokens | Output tokens | Estimated cost |
|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0070 |
| Document summary | 50,000 | 2,000 | $0.12 |
| 1M tokens in, 200K out | 1,000,000 | 200,000 | $4.00 |
Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.
Common questions
- How much does Claude Sonnet 5.5 cost per 1M tokens?
- Claude Sonnet 5.5 costs $2.00 per 1M input tokens and $10.00 per 1M output tokens on the standard tier. Cached input is $0.200 per 1M.
- What is Claude Sonnet 5.5's context window?
- Claude Sonnet 5.5 accepts up to 1,000,000 tokens in a single request, and can return up to 128,000 output tokens.
- Is there a cheaper Claude model than Claude Sonnet 5.5?
- Yes. Claude Haiku 3.5 is $0.800 per 1M input tokens versus $2.00 for Claude Sonnet 5.5.
- Where does this Claude Sonnet 5.5 price come from?
- Directly from Anthropic's published pricing page, re-read every day and normalized to USD per 1,000,000 tokens.
Head-to-head comparisons
Other Claude models
- Claude Fable 5.1 $10.00
- Claude Mythos 5.1 $10.00
- Claude Fable 5 $10.00
- Claude Mythos 5 $10.00
- Claude Opus 5.5 $4.00
- Claude Opus 5 $5.00
- Claude Opus 4.8 $5.00
- Claude Opus 4.7 $5.00
- Claude Opus 4.6 $5.00
- Claude Opus 4.5 $5.00
- Claude Opus 4.1 $15.00
- Claude Opus 4 $15.00
- Claude Sonnet 5 $2.00
- Claude Sonnet 4.6 $3.00
- Claude Sonnet 4.5 $3.00
- Claude Sonnet 4 $3.00