GET
/v1/models/openrouter/openrouter-anthropic-claude-sonnet-4
Accept:
| rawId | anthropic/claude-sonnet-4 |
| displayName | Anthropic: Claude Sonnet 4 |
| id | openrouter-anthropic-claude-sonnet-4 |
| activity | chat |
| schemaEndpointId | chat/completions |
| releasedAt | 1747930371 — May 22, 2025 |
| firstSeenAt | 1747930371 — May 22, 2025 |
| lastSeenAt | 1792069252 — 29d ago |
| pricing | $3 / 1M input · $15 / 1M output · base rate; long prompts re-quote → open calculator input_tokens (usage) · output_tokens (usage) · web_searches (usage) · cache_read_tokens (usage) · cache_write_tokens (usage) · cache_write_1h_tokens (usage) |
| contextWindow | 200000 |
| maxOutput | 64000 |
| modalities | {"input":["image","text","file"],"output":["text"]} |
| capabilities | {"include_reasoning":true,"max_tokens":true,"reasoning":true,"stop":true,"temperature":true,"tool_choice":true,"tools":true,"top_k":true,"top_p":true,"frequency_penalty":true,"presence_penalty":true,"reasoning_effort":true,"response_format":true,"seed":true,"structured_outputs":true} |
| requestMap | {"thinking":{"on":{"reasoning":{"enabled":true}},"off":{"reasoning":{"enabled":false}},"levels":null},"maxTokensField":null,"developerRole":null,"replayReasoningContent":null,"store":null,"strictTools":null,"sessionAffinity":null,"cacheControl":null,"toolStream":null,"reasoningEffort":null} |
| knowledgeCutoff · openWeights · weightsUrl · providerMetadata | not published by this provider’s list endpoint |
Endpoints & schemas
GET /v1/schemas/openrouter →| endpoint | activity |
|---|---|
| chat/completions | chat |
endpoints matching this model — the provider has more, see /v1/schemas/openrouter
Sources
| field | recorded source |
|---|---|
| contextWindow | Source unknown — no source URL recorded. listing |
| maxOutput | Source unknown — no source URL recorded. listing |
| modalities | Source unknown — no source URL recorded. listing |
| pricing | Source unknown — no source URL recorded. listing |
| reasoning | https://openrouter.ai/docs/guides/best-practices/reasoning-tokens.md docs-derived native mandatory:false; Messages API normalized reasoning.enabled accepted on every reasoning model; explicit disables prose Source tracecaeffc06901c92627c793e6b9ec00fcf5fef6c619941e64f7795caf8444d43ab |
| capabilities.include_reasoning | Source unknown — no source URL recorded. listing |
| capabilities.max_tokens | Source unknown — no source URL recorded. listing |
| capabilities.reasoning | Source unknown — no source URL recorded. listing |
| capabilities.stop | Source unknown — no source URL recorded. listing |
| capabilities.temperature | Source unknown — no source URL recorded. listing |
| capabilities.tool_choice | Source unknown — no source URL recorded. listing |
| capabilities.tools | Source unknown — no source URL recorded. listing |
| capabilities.top_k | Source unknown — no source URL recorded. listing |
| capabilities.top_p | Source unknown — no source URL recorded. listing |
| capabilities.frequency_penalty | https://openrouter.ai/openapi.json upstream-spec /properties/frequency_penalty Source trace314dc37b1d7a1b3e83167a35e068814ed10e55586cd9671eab911f7dcc4f0dc1{
"endpointId": "chat/completions",
"fetchedAt": 1791523804
} |
| capabilities.presence_penalty | https://openrouter.ai/openapi.json upstream-spec /properties/presence_penalty Source trace314dc37b1d7a1b3e83167a35e068814ed10e55586cd9671eab911f7dcc4f0dc1{
"endpointId": "chat/completions",
"fetchedAt": 1791523804
} |
| capabilities.reasoning_effort | https://openrouter.ai/openapi.json upstream-spec /properties/reasoning/properties/effort Source trace314dc37b1d7a1b3e83167a35e068814ed10e55586cd9671eab911f7dcc4f0dc1{
"endpointId": "chat/completions",
"fetchedAt": 1791523804
} |
| capabilities.response_format | https://openrouter.ai/openapi.json upstream-spec /properties/response_format Source trace314dc37b1d7a1b3e83167a35e068814ed10e55586cd9671eab911f7dcc4f0dc1{
"endpointId": "chat/completions",
"fetchedAt": 1791523804
} |
| capabilities.seed | https://openrouter.ai/openapi.json upstream-spec /properties/seed Source trace314dc37b1d7a1b3e83167a35e068814ed10e55586cd9671eab911f7dcc4f0dc1{
"endpointId": "chat/completions",
"fetchedAt": 1791523804
} |
| capabilities.structured_outputs | https://openrouter.ai/openapi.json upstream-spec /properties/response_format Source trace314dc37b1d7a1b3e83167a35e068814ed10e55586cd9671eab911f7dcc4f0dc1{
"endpointId": "chat/completions",
"fetchedAt": 1791523804
} |
| requestMapFields.thinking | https://openrouter.ai/docs/guides/best-practices/reasoning-tokens.md docs-derived native accepted effort values or nonmandatory toggle; normative universal normalized reasoning effort/enabled fields Source tracecaeffc06901c92627c793e6b9ec00fcf5fef6c619941e64f7795caf8444d43ab |
| activity | Source unknown — no source URL recorded. |
| requestMap | Source unknown — no source URL recorded. |
| schemaEndpointId | Source unknown — no source URL recorded. |
Use it
shell
$ curl https://modelschemas.com/v1/schemas/openrouter/chat/chat/completions # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"openrouter","endpointId":"chat/completions","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"openrouter","model":"anthropic/claude-sonnet-4","usage":{"input_tokens":1200,"output_tokens":400}}'