Claude Sonnet 5.5 API Pricing
Anthropic · released Sep 28, 2026 · 1M context · API model ID claude-sonnet-5-5
Claude Sonnet 5.5 by Anthropic API pricing: $2.00 per 1M input tokens and $10.00 per 1M output tokens (verified against the official pricing page, Oct 9, 2026).
Prices
| Price | USD per 1M tokens |
|---|---|
| Input | $2.00 |
| Output | $10.00 |
| Cache read | $0.10 |
| Cache write | $2.50 |
| Batch input | $1.00 |
| Batch output | $5.00 |
Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page
Estimated monthly cost
$2,100
per month
- per day
- $70.00
- per request
- $0.007
Cannot estimate: a needed price is not published.
Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.
Monthly cost by workload
| Workload | Per month |
|---|---|
| Chatbot1,000 in / 500 out tokens, 10,000 requests a day | $2,100/mo |
| RAG8,000 in / 500 out tokens, 5,000 requests a day | $3,150/mo |
| Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input | $1,320/mo |
Context and capabilities
- Context
- 1,000,000 tokens
- Max output
- 128,000 tokens
- Input
- text, image, pdf
- Output
- text
- Knowledge cutoff
- June 2026
- Open weights
- No
- Tool calling
- Yes
- Reasoning
- Yes
- Structured outputs
- Yes
Capabilities and limits as listed by models.dev.
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Compare Claude Sonnet 5.5
- Claude Sonnet 5.5 vs Claude Haiku 5.5
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- Claude Sonnet 5.5 vs DeepSeek V4.1 Flash
- Claude Sonnet 5.5 vs DeepSeek V4 Pro
- Claude Sonnet 5.5 vs Gemini 3.1 Pro Preview
- Claude Sonnet 5.5 vs Gemini 3.5 Flash Lite
- Claude Sonnet 5.5 vs Gemini 3.8 Flash
- Claude Sonnet 5.5 vs GLM-5.3-FlashX
- Claude Sonnet 5.5 vs GPT-6.1 Sol
- Claude Sonnet 5.5 vs GPT-6 Astra
- Claude Sonnet 5.5 vs GPT-6 Luna
- Claude Sonnet 5.5 vs Grok 4.7
- Claude Sonnet 5.5 vs Grok Build 0.1
- Claude Sonnet 5.5 vs Kimi K3
- Claude Sonnet 5.5 vs MiniMax-M3
- Claude Sonnet 5.5 vs Mistral Medium 3.5
- Claude Sonnet 5.5 vs Muse Spark 1.3
- Claude Sonnet 5.5 vs Qwen3.8 Flash
- Claude Sonnet 5.5 vs Qwen3.8 Max
- Claude Sonnet 5.5 vs Seed 2.0 Pro
Price history
No price changes since we started tracking on Oct 8, 2026.
Questions
- How much does Claude Sonnet 5.5 cost per month?
- For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, Claude Sonnet 5.5 costs about $2,100 per month at the provider's official prices (verified) ($2.00 per 1M input tokens, $10.00 per 1M output tokens).
- Does Claude Sonnet 5.5 support prompt caching?
- Yes. Cached input costs $0.10 per 1M tokens, compared with $2.00 for regular input. Writing to the cache costs $2.50 per 1M tokens.
- How long is Claude Sonnet 5.5's context window?
- Claude Sonnet 5.5 accepts up to 1,000,000 tokens (1M) of context and returns up to 128,000 tokens per response.
- Does Claude Sonnet 5.5 have a batch price?
- Yes. Asynchronous batch requests cost $1.00 per 1M input tokens and $5.00 per 1M output tokens.