anthropic

Anthropic: Claude Sonnet 4.5

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...

text

Try in Playground ↗

Input / 1M tokens$3

Output / 1M tokens$15

Context window1,000,000

Maximum output64,000

Provider-supported parameters

These are upstream capabilities. Jevrouter supports the subset described in the API contract; chat input is currently text only.

include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_pstreamdeveloper_role

Capabilities are imported from OpenRouter’s catalog. This does not mean every model has been independently tested by Jevrouter.

Catalog updated: 2026-09-22T10:51:50.887Z · Price version: cmubxr2ay07tljn0zaezpjl0b:3

Provider pricing fields · USD per indicated unit

{
  "prompt": "0.000003",
  "completion": "0.000015",
  "overrides": [
    {
      "prompt": "0.000006",
      "completion": "0.0000225",
      "input_cache_read": "0.0000006",
      "input_cache_write": "0.0000075",
      "min_prompt_tokens": 200000,
      "input_cache_write_1h": "0.000012"
    }
  ],
  "web_search": "0.01",
  "input_cache_read": "0.0000003",
  "input_cache_write": "0.00000375",
  "input_cache_write_1h": "0.000006"
}

Make a request

curl --no-buffer https://api.jevrouter.io/v1/chat/completions \
  -H "Authorization: Bearer $JEVROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d @- <<'JSON'
{
  "model": "anthropic/claude-sonnet-4.5",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 1024
}
JSON

Plan your integration

Connect with the OpenAI Python SDK →Estimate this model’s cost →Budgets, request status and safe retries →

Source: OpenRouter model catalog. Imported descriptions and capabilities are provider declarations, not independent benchmark results. Jevrouter currently uses OpenRouter as its managed upstream.