Anthropic: Claude Sonnet 5.5

anthropic/claude-sonnet-5.5

Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...

Context window
1,000,000 tokens
Input
text · image · file
Output
text
Relay support
Text & vision

Reference prices & points

Our global markup: 15% · 1 USD = 10,000 points · Price version 0

Billing unitOpenRouter / USDOur reference / USDPoints
Input / 1M tokens$2$2.323,000
Output / 1M tokens$10$11.5115,000
Per search$0.01$0.0115115
Cache read / 1M tokens$0.1$0.1151,150
Cache write / 1M tokens$2.5$2.87528,750
1h cache write / 1M tokens$4$4.646,000

Actual charge = the OpenRouter request cost × the markup locked for that request. Catalogue rates may be routing references; caching, long context, images and audio are charged when used. Listed prices do not mean every capability is available through this relay.

Catalogue time: 2026-11-11T23:55:39.885Z · Live catalogue

View all upstream price fields
{
  "prompt": "0.000002",
  "completion": "0.00001",
  "web_search": "0.01",
  "input_cache_read": "0.0000001",
  "input_cache_write": "0.0000025",
  "input_cache_write_1h": "0.000004"
}

Integration & availability

Use /v1/chat/completions for non-streaming, multi-turn conversations. Models marked for vision accept images; documents can be extracted to text in the workspace. Create a site API key and ensure you have enough points and the service is enabled. Provider availability, context and budget limits apply.

Read the API guide → · Back to model directory