Anthropic › Claude Sonnet 5.5 › Pricing
Claude Sonnet 5.5 pricing
API list price by Anthropic · same on Amazon Bedrock, Azure, Claude Platform on AWS · checked Oct 23, 2026
$2 / $10per 1M tokens in / out
$0.10cache read · −95%
$1 / $5batch · −50%
$0.88per task at high?
#16on OpenRouter by tokens · 2.5T / week
Price sheetper 1M tokens
| Input | $2 | list |
| Output | $10 | |
| Cache read | $0.10 | −95% vs input |
| Cache write · 5 min | $2.50 | +25% vs input |
| Cache write · 1 h | $4 | +100% vs input |
| Batch input | $1 | −50% |
| Batch output | $5 | −50% |
| Context · max output | 1M · 128K | tokens |
Cost per task by effort?
low$0.3536.2
medium$0.4839.8
highAPI default$0.8845.8
xhigh$2.0150
max$5.4655
per taskHumanity's Last Exam
Same price per token at every effort; the bill grows with reasoning tokens. max costs 6.2× high for +9.1 points.
Where to buy6 providers · per 1M tokens
| Provider | Input | Output | Context |
|---|---|---|---|
| Amazon Bedrock | $2 | $10 | 1M |
| Anthropiclab | $2 | $10 | 1M |
| Azure | $2 | $10 | 1M |
| Claude Platform on AWS | $2 | $10 | 1M |
| DeepInfra | $2 | $10 | — |
| $2 | $10 | 1M |
In Anthropic's line-upper 1M in / out
| Claude Haiku 5.5 | $0.10 / $0.50 | −95% |
| Claude Sonnet 5.5 | $2 / $10 | this model |
| Claude Opus 5.5 | $4 / $20 | 2× |
| Claude Fable 5.1 | $10 / $50 | 5× |
| Claude Mythos 5 | $10 / $50 | 5× |
| Claude Mythos 5.1 | $10 / $50 | 5× |
Cheaper for the same workvs Sonnet 5.5 at high
| GPT-6.1 Sol max | -18% | score +11% | $0.72 |
| MiMo v2.6 Pro thinkingOpen | -85% | same score | $0.13 |
| GPT-6 Astra low | -8% | same score | $0.82 |
| DeepSeek V4.1 Flash 1017 maxOpen | -70% | score -4% | $0.26 |
| GPT-6 Sol xhigh | -41% | score -5% | $0.52 |
Pricing questions
How much does Claude Sonnet 5.5 cost?›
$2 per 1M input tokens and $10 per 1M output tokens on Anthropic's API and Amazon Bedrock, Azure, Claude Platform on AWS. Cached input is $0.10. Batch requests cost $1 / $5. One Intelligence Index task costs about $0.88 at the default effort.
Is Claude Sonnet 5.5 free to use?›
There is no free API tier.
How much does prompt caching save?›
Cache reads cost $0.10 per 1M, 95% below the input price. Writing to the cache costs $2.50 per 1M (5m TTL).
Is Claude Sonnet 5.5 cheaper than Claude Sonnet 4.5?›
Yes: $2 / $10 against $3 / $15, 33% less per token.
How does effort change the price?›
The price per token is the same at every effort. Higher effort spends more reasoning tokens: a task costs $0.35 at low, $0.48 at medium, $0.88 at high, $2.01 at xhigh, $5.46 at max.
What is a cheaper alternative to Claude Sonnet 5.5?›
GPT-6.1 Sol at max effort costs -18% per task with a score +11% on Humanity's Last Exam.