Claude Sonnet 4.5 (latest): API pricing, providers and specs
Claude Sonnet 4.5 (latest) is a text model by Anthropic. 24 providers serve it, from $12 to $16.50 /1M; the lowest price is at APIMart.
How Claude Sonnet 4.5 (latest) compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $12 /1M, its lowest price is above 89% of comparable models (median $1.10).
- Its 1M-token context window is larger than 67% of them (median 262K), about 1500 pages of text.
- 24 providers serve it; 90% of comparable models have fewer.
Claude Sonnet 4.5 (latest) 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 |
|---|---|---|---|---|
| APIMart | $2.40/1M | $12/1M | — | — |
 CometAPI | $2.40/1M | $12/1M | $0.24/1M | — |
 Poe | $2.58/1M | $12.88/1M | $0.258/1M | 197K |
 Jiekou.AI | $2.85/1M | $14.25/1M | $0.285/1M | — |
| AnthropicOfficial | $3/1M | From$15/1M | $0.30/1M | — |
| ZenMux | $3/1M | From$15/1M | $0.30/1M | 1M |
 Requesty | $3/1M | From$15/1M | $0.30/1M | 1M |
 Venice AI | $3/1M | $15/1M | $0.30/1M | — |
| Vercel AI Gateway | $3/1M | From$15/1M | $0.30/1M | 1M |
 NEAR AI Cloud | $3/1M | $15/1M | $0.30/1M | 200K |
 Helicone | $3/1M | From$15/1M | $0.30/1M | — |
| AI/ML API | $3/1M | $15/1M | $0.317/1M | — |
 Impossibl | $3/1M | $15/1M | $0.30/1M | — |
| OpenRouter | $3/1M | From$15/1M | $0.30/1M | 1M |
| DevPass (LLM Gateway) | $3/1M | From$15/1M | $0.30/1M | — |
 APIYI | $3/1M | $15/1M | — | — |
 LaoZhang API | $3/1M | $15/1M | — | — |
 CrazyRouter | $3/1M | $15/1M | — | — |
| Atlas Cloud | $3/1M | $15/1M | $0.30/1M | — |
 Amazon Bedrock | $3/1M | From$15/1M | $0.30/1M | — |
 Vertex | $3/1M | From$15/1M | $0.30/1M | — |
 Prime Inference | $3/1M | $15/1M | — | — |
 Cortecs | $3/1M | $15.02/1M | $0.328/1M | — |
 AIHubMix | $3.30/1M | From$16.50/1M | $0.33/1M | 200K |
- APIMart$12
- CometAPI$12
- Poe$12.88
- Jiekou.AI$14.25
- Venice AI$15
- NEAR AI Cloud$15
- AI/ML API$15
- Impossibl$15
- APIYI$15
- LaoZhang API$15
- CrazyRouter$15
- Atlas Cloud$15
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
- Sep 29, 2025
- License
- proprietary
- Open weights
- No, API only
Alternatives to Claude Sonnet 4.5 (latest)
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Claude Sonnet 4.5 (latest)this model | $12/1M | 1M | — | 24 |
 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 |
 Qwen3.8 2.4T A95B | $4.11/1M | 1M | — | 22 |
| Grok 4.7 | $4.80/1M | 500K | 1637 | 28 |
More from Anthropic
Claude Sonnet 4.5 (latest) FAQ
APIMart, at $12 /1M. 24 providers serve Claude Sonnet 4.5 (latest); the table above lists every one with its price.
Claude Sonnet 4.5 (latest) reads up to 1M tokens per request and writes up to 64K.
No. Claude Sonnet 4.5 (latest) is only available through an API; Anthropic does not publish its weights.
24 API providers serve Claude Sonnet 4.5 (latest). Compare their prices above, or open a provider to see everything it offers.
Can't find what you're looking for? Contact us