Claude Sonnet 4: API pricing, providers and specs
Claude Sonnet 4 is a text model by Anthropic. 5 providers serve it, from $15 to $15.87 /1M; the lowest price is at Atlas Cloud.
A newer version is out: Claude Sonnet 5.5 · released Sep 28, 2026
How Claude Sonnet 4 compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $15 /1M, its lowest price is above 91% of comparable models (median $1.10).
- Its 1M-token context window is larger than 67% of them (median 262K), about 1500 pages of text.
- On LMArena's Text board it ranks #63 of the 120 comparable models scored there.
- 5 providers serve it; 65% of comparable models have fewer.
Claude Sonnet 4 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 Helicone | $3/1M | From$15/1M | $0.30/1M | — |
| Atlas Cloud | $3/1M | $15/1M | $0.30/1M | — |
 Requesty | $3/1M | From$15/1M | $0.30/1M | 1M |
 Amazon Bedrock | $3/1M | From$15/1M | $0.30/1M | — |
| AI/ML API | $3.17/1M | $15.87/1M | $0.317/1M | — |
- Atlas Cloud$15
- HeliconeFrom$15
- RequestyFrom$15
- Amazon BedrockFrom$15
- AI/ML API$15.87
Specs
- Type
- Text
- Maker
- Anthropic
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 1M≈ 1500 pages of text
- Max output
- 64K
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- May 22, 2025
- License
- proprietary
- Open weights
- No, API only
- Arena score
- 1351Text
Alternatives to Claude Sonnet 4
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Claude Sonnet 4this model | $15/1M | 1M | 1351 | 5 |
 Gemini 4 Argon | $8/1M | 1.05M | 1673 | 26 |
| Kimi K3 | $8.28/1M | 1.05M | 1655 | 47 |
| GPT-6 Astra | $25/1M | 1.05M | 1775 | 31 |
 Muse Wonder | $16/1M | 1.05M | — | 14 |
| GPT-6.1 Sol | $8/1M | 1.05M | 1749 | 27 |
| GPT-6 Sol | $8/1M | 1.05M | 1682 | 28 |
| GPT-5 | $8/1M | 400K | 1418 | 26 |
| GPT-5.6 | $10/1M | 1.05M | 1615 | 29 |
More from Anthropic
Claude Sonnet 4 FAQ
The lowest price for Claude Sonnet 4 is $15 /1M, at Atlas Cloud.
Atlas Cloud, at $15 /1M. 5 providers serve Claude Sonnet 4; the table above lists every one with its price.
Claude Sonnet 4 reads up to 1M tokens per request and writes up to 64K.
No. Claude Sonnet 4 is only available through an API; Anthropic does not publish its weights.
5 API providers serve Claude Sonnet 4. Compare their prices above, or open a provider to see everything it offers.
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