Claude Sonnet 5
anthropic/claude-sonnet-5Anthropic~anthropic/claude-sonnet-latestoperationalThe best combination of speed and intelligence in the Claude 5 family. 1M context.
Official pricing
USD per million tokens, exactly what Anthropic publishes. ElevenRouter adds no markup on tokens.
Example: 1,000 input + 500 output tokens ≈ $0.00700. Zero-completion responses are never charged.
Specs
- Context
- 1M
- Max output
- 128K
- Modalities
- text+image+file->text
- Tokenizer
- Claude
- Released
- 2026-09-20
- Family
- claude-sonnet
Availability on ElevenRouter
Measured by the routing engine; up when at least one credential can serve the model.
Observed performance
Real requests over the last 7 days (2 samples).
- Time to first token p50
- —
- p95
- —
- Output tokens/s p50
- —
- p95
- —
Percentiles appear after five successful requests.
Usage on ElevenRouter
Tokens per day across all customers (anonymous, aggregate).
Use it
Any OpenAI or Anthropic SDK works by changing the base URL. Supported parameters: max_tokens, temperature, top_p, top_k, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs.
curl https://elevenrouter.com/api/v1/chat/completions \
-H "Authorization: Bearer $ELEVENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{ "model": "anthropic/claude-sonnet-5", "messages": [{ "role": "user", "content": "Hello" }] }'Related models
- Claude Sonnet 4.6 · Anthropic$3.00 / $15.00
- Claude Fable 5.1 · Anthropic$10.00 / $50.00
- Claude Fable 5 · Anthropic$10.00 / $50.00
- Claude Haiku 4.5 · Anthropic$1.00 / $5.00
- Claude Opus 4.6 · Anthropic$5.00 / $25.00
- Claude Opus 4.7 · Anthropic$5.00 / $25.00
- Claude Opus 4.8 · Anthropic$5.00 / $25.00
- GPT-5.6 Terra · OpenAI$2.00 / $12.00
- Kimi K3 · Moonshot AI$3.00 / $15.00
Frequently asked questions
How much does Claude Sonnet 5 cost on ElevenRouter?
Claude Sonnet 5 is billed at Anthropic's official list price: $2.00 per million input tokens and $10.00 per million output tokens, with cached input at $0.200. A request with 1,000 input and 500 output tokens costs about $0.00700.
What is the context length of Claude Sonnet 5?
Claude Sonnet 5 accepts up to 1M tokens of context and can produce up to 128K output tokens.
Does Claude Sonnet 5 support tool calling and structured outputs?
Yes, tool calling is supported and JSON-schema structured outputs are native. Supported parameters: max_tokens, temperature, top_p, top_k, stop, tools, tool_choice, reasoning, include_reasoning, response_format, structured_outputs.
How do I call Claude Sonnet 5?
Send an OpenAI-compatible chat completion to https://elevenrouter.com/api/v1/chat/completions with "model": "anthropic/claude-sonnet-5" and your ElevenRouter key, or use the Anthropic Messages endpoint. Any OpenAI or Anthropic SDK works by changing the base URL.
Is Claude Sonnet 5 available right now?
Availability is measured continuously by the routing engine. Current status: operational, 100.00% uptime over the last 30 days. When one credential fails, requests fail over to another automatically.