Claude 4.5 Sonnet: API pricing, providers and specs
Claude 4.5 Sonnet is a text model by Anthropic. 2 providers serve it, from $15 to $15 /1M; the lowest price is at Replicate.
How Claude 4.5 Sonnet 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 200K-token context window is larger than 32% of them (median 262K), about 300 pages of text.
- 2 providers serve it; 36% of comparable models have fewer.
Claude 4.5 Sonnet 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 |
|---|---|---|---|---|
| Replicate | $3/1M | $15/1M | — | — |
 FastRouter | $3/1M | $15/1M | $0.30/1M | 200K |
- Replicate$15
- FastRouter$15
Specs
- Type
- Text
- Maker
- Anthropic
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 200K≈ 300 pages of text
- Max output
- 64K
- Capabilities
- Prompt caching, Reasoning, Tool calling, Vision
- Released
- Sep 29, 2025
- License
- proprietary
- Open weights
- No, API only
Alternatives to Claude 4.5 Sonnet
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Claude 4.5 Sonnetthis model | $15/1M | 200K | — | 2 |
 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 4.5 Sonnet FAQ
The lowest price for Claude 4.5 Sonnet is $15 /1M, at Replicate.
Replicate, at $15 /1M. 2 providers serve Claude 4.5 Sonnet; the table above lists every one with its price.
Claude 4.5 Sonnet reads up to 200K tokens per request and writes up to 64K.
No. Claude 4.5 Sonnet is only available through an API; Anthropic does not publish its weights.
2 API providers serve Claude 4.5 Sonnet. Compare their prices above, or open a provider to see everything it offers.
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