# Anthropic: Claude Sonnet 4.5

- Model id: `anthropic/claude-sonnet-4.5`
- Served by: -
- List price per 1M tokens, input / output, from: -, with 0% platform fee. A request is billed at the list price of the host that served it.
- Context: 1M, max output 64K
- Prices read 2026-11-15 09:33 UTC
- Page: https://plaingateway.com/models/anthropic/claude-sonnet-4.5

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...

## Hosts

| Host | Endpoint | In / out /M | Cache read /M | Context | Served |
|---|---|---|---|---|---|
| Amazon Bedrock | `amazon-bedrock` | $3.00 / $15.00 | $0.30 | 1M | no |
| Anthropic | `anthropic` | $3.00 / $15.00 | $0.30 | 1M | no |
| Azure | `azure/global` | $3.00 / $15.00 | $0.30 | 200K | no |
| Claude On Aws | `claude-on-aws` | $3.00 / $15.00 | $0.30 | 1M | no |
| Google Vertex | `google-vertex/global` | $3.00 / $15.00 | $0.30 | 1M | no |
| Amazon Bedrock | `amazon-bedrock/eu-west-1` | $3.30 / $16.50 | $0.33 | 1M | no |
| Google Vertex | `google-vertex/us-east5` | $3.30 / $16.50 | $0.33 | 1M | no |

## First request

```sh
curl https://api.plaingateway.com/api/v1/chat/completions \
  -H "Authorization: Bearer $PLAINGATEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "anthropic/claude-sonnet-4.5", "messages": [{"role": "user", "content": "Say hello in five words."}]}'
```

Sign up at https://plaingateway.com/signup (no card), create a key, send a test call, and add credits when you want more. New accounts may get a small starting credit. The whole bootstrap for agents: https://plaingateway.com/llms.txt