GET
/v1/models/openrouter/openrouter-sakana-fugu-ultra-v2
Accept:
| rawId | sakana/fugu-ultra-v2 |
| displayName | Sakana: Fugu Ultra v2 |
| id | openrouter-sakana-fugu-ultra-v2 |
| activity | chat |
| schemaEndpointId | chat/completions |
| releasedAt | 1789105383 — Sep 11, 2026 |
| firstSeenAt | 1789105383 — Sep 11, 2026 |
| lastSeenAt | 1794567636 — 3m ago |
| pricing | $5 / 1M input · $30 / 1M output · base rate; long prompts re-quote → open calculator input_tokens (usage) · output_tokens (usage) · web_searches (usage) · cache_read_tokens (usage) |
| contextWindow | 1000000 |
| maxOutput | 128000 |
| modalities | {"input":["text","image","file"],"output":["text"]} |
| capabilities | {"include_reasoning":true,"reasoning":true,"reasoning_effort":true,"structured_outputs":true,"tool_choice":true,"tools":true,"web_search_options":true,"frequency_penalty":true,"max_tokens":true,"presence_penalty":true,"response_format":true,"seed":true,"stop":true,"temperature":true,"top_k":true,"top_p":true} |
| requestMap | {"thinking":{"on":{"reasoning":{"effort":"high"}},"off":null,"levels":null},"maxTokensField":null,"developerRole":null,"replayReasoningContent":true,"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 per-model accepted efforts and mandatory metadata; universal normalized reasoning.effort field Source trace24b0d14661268608c643f6a82a3f08a17add117c12bc1430ddb3b6cf97e74fe9 |
| capabilities.include_reasoning | Source unknown — no source URL recorded. listing |
| capabilities.reasoning | Source unknown — no source URL recorded. listing |
| capabilities.reasoning_effort | Source unknown — no source URL recorded. listing |
| capabilities.structured_outputs | 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.web_search_options | Source unknown — no source URL recorded. listing |
| capabilities.frequency_penalty | https://openrouter.ai/openapi.json upstream-spec /properties/frequency_penalty Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.max_tokens | https://openrouter.ai/openapi.json upstream-spec /properties/max_completion_tokens Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.presence_penalty | https://openrouter.ai/openapi.json upstream-spec /properties/presence_penalty Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.response_format | https://openrouter.ai/openapi.json upstream-spec /properties/response_format Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.seed | https://openrouter.ai/openapi.json upstream-spec /properties/seed Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.stop | https://openrouter.ai/openapi.json upstream-spec /properties/stop Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.temperature | https://openrouter.ai/openapi.json upstream-spec /properties/temperature Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.top_k | https://openrouter.ai/openapi.json upstream-spec /properties/top_k Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| capabilities.top_p | https://openrouter.ai/openapi.json upstream-spec /properties/top_p Source tracea698ac85ec9c7ae8bfa6add30d28e5f95c6b042ac547450e30ff6940ef6e5bd4{
"endpointId": "chat/completions",
"fetchedAt": 1794202205
} |
| 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 trace24b0d14661268608c643f6a82a3f08a17add117c12bc1430ddb3b6cf97e74fe9 |
| requestMapFields.replayReasoningContent | https://openrouter.ai/docs/guides/best-practices/reasoning-tokens.md docs-derived reasoning_content alias; reasoning_details replay for every supported reasoning model Source trace24b0d14661268608c643f6a82a3f08a17add117c12bc1430ddb3b6cf97e74fe9 |
| 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":"sakana/fugu-ultra-v2","usage":{"input_tokens":1200,"output_tokens":400}}'