Claude Sonnet 5
claude-sonnet-5
These are Mengbi Router customer prices in USD per 1M tokens. Provider: Anthropic; Context: 1M; Input price: $0.817; Output price: $4.09.
- Coding
- Agents & tools
- Cost effective
AI models and pricing
Model specs
- Provider
- Anthropic
- Context
- 1M
- Max output
- 64K
- Released
- Jun 2026
- Input modalities
- Text, Image, PDF
- Output modalities
- Text
- Tool calling
- Supported
- Structured output
- Supported
- Currency
- USD
- Model ID
- claude-sonnet-5
Model pricing and access details
USD / 1M tokens| Model | Official | Mengbi | Discount |
|---|---|---|---|
| Input price | $2 | $0.817 | 59% OFF |
| Output price | $10 | $4.09 | 59% OFF |
| Cache read price | $0.20 | $0.0817 | 59% OFF |
Estimated cost for common usage
Estimates based on current Mengbi Router prices, so you can plan real request costs.
| Token volume | Input | Output | Input + output total |
|---|---|---|---|
| 10K tokens | $0.00817 | $0.0409 | $0.049 |
| 100K tokens | $0.0817 | $0.409 | $0.49 |
| 1M tokens | $0.817 | $4.09 | $4.9 |
| 10M tokens | $8.17 | $40.86 | $49.03 |
Estimates use the current prices above and exclude cache-hit discounts. Your invoice is metered by the actual token usage of each request.
Public benchmark scores
How Claude Sonnet 5 scores on common public benchmarks, so you can compare capability at a glance.
| Benchmark | Score |
|---|---|
| GPQA Diamond | 91.2 |
| SWE-bench Verified | 76.3 |
| AIME 2026 | 91.8 |
Curated from vendor-published evaluations (snapshot 2026-09). For reference only; not independently tested by Mengbi.
API protocol compatibility
Keep your SDK. Change one line.
Use the protocol your stack already speaks.
const client = new OpenAI({
apiKey: process.env.MENGBI_ROUTER_KEY,
baseURL: process.env.MENGBI_ROUTER_BASE_URL,
})
const response = await client.chat.completions.create({
model: 'claude-sonnet-5',
messages,
})Frequently asked questions
Common questions about the Claude Sonnet 5 API: pricing, capabilities, and integration.
How much does the Claude Sonnet 5 API cost?
Through Mengbi Router, Claude Sonnet 5 costs $0.817 per 1M input tokens and $4.09 per 1M output tokens. Cached input is billed at $0.0817 per 1M tokens.
What is the context window of Claude Sonnet 5?
Claude Sonnet 5 supports a 1M-token context window. A single request can generate up to about 64K output tokens.
Does Claude Sonnet 5 support tool calling and structured output?
Yes. Claude Sonnet 5 supports the tools parameter in chat.completions for function calling. It also supports response_format with a JSON Schema for structured output.
What input and output formats does Claude Sonnet 5 support?
It accepts Text, Image, and PDF and returns Text.
How do I call Claude Sonnet 5 with the OpenAI SDK?
Keep your OpenAI SDK, point the base URL at Mengbi Router, use your Mengbi API key, and set model to claude-sonnet-5 in the request.
Which company provides Claude Sonnet 5?
Claude Sonnet 5 is provided by Anthropic and available through Mengbi Router with one API key and pay-as-you-go billing. The model was first released in Jun 2026.