GET

/v1/models/baseten/baseten-nvidia-nvidia-nemotron-3-ultra-550b-a55b

provider basetenstatus activefirst seen Jun 4, 2026last seen 2m ago
rawIdnvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B
displayNameNemotron 3 Ultra
idbaseten-nvidia-nvidia-nemotron-3-ultra-550b-a55b
activitychat
schemaEndpointIdv1/chat/completions
input · output
releasedAt1780594202 — Jun 4, 2026
firstSeenAt1780531200 — Jun 4, 2026
lastSeenAt1794564080 — 2m ago
pricing
$0.6 / 1M input · $2.4 / 1M output → open calculator
input_tokens (usage) · output_tokens (usage) · cache_read_tokens (usage)
contextWindow202800
maxOutput202800
modalities{"input":["text"],"output":["text"]}
capabilities{"frequency_penalty":true,"max_tokens":true,"presence_penalty":true,"response_format":true,"seed":true,"stop":true,"temperature":true,"top_p":true,"tools":true,"tool_choice":true,"top_k":true,"reasoning":true,"reasoning_effort":true,"structured_outputs":true}
knowledgeCutoff · openWeights · weightsUrl · requestMap · providerMetadatanot published by this provider’s list endpoint

Endpoints & schemas

GET /v1/schemas/baseten →
endpointactivity
v1/chat/completions
input · output
chat

endpoints matching this model — the provider has more, see /v1/schemas/baseten

Sources

fieldrecorded source
contextWindowSource unknown — no source URL recorded.

listing

maxOutputSource unknown — no source URL recorded.

listing

modalitiesSource unknown — no source URL recorded.

listing

pricingSource unknown — no source URL recorded.

listing

reasoninghttps://docs.baseten.co/inference/model-apis/reasoning.md

docs-derived

reasoning_effort

Source trace
6eb9d6e99dfb88432aef6a6536512048927b4a1c5dea84b195dec0795b6bda72
capabilities.frequency_penaltyhttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/frequency_penalty

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.max_tokenshttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/max_tokens

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.presence_penaltyhttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/presence_penalty

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.response_formathttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/response_format

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.seedhttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/seed

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.stophttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/stop

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.temperaturehttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/temperature

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.top_phttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/top_p

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.toolshttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/tools

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.tool_choicehttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/tool_choice

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.top_khttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/top_k

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.reasoninghttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/reasoning

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.reasoning_efforthttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/reasoning_effort

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
capabilities.structured_outputshttps://docs.baseten.co/reference/inference-api/llm-openapi-spec.json

upstream-spec

/properties/response_format

Source trace
798a8399553089b26e639bd88667e80687b6d5c4da5006e809d2a36ce94cad94
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1793165444
}
requestMapFields.replayReasoningContenthttps://docs.baseten.co/inference/model-apis/reasoning.md

Value unknown (null); not published in the checked source · checked 2026-10-09.

activitySource unknown — no source URL recorded.
requestMapSource unknown — no source URL recorded.
schemaEndpointIdSource unknown — no source URL recorded.

Use it

shell
$ curl https://modelschemas.com/v1/schemas/baseten/chat/v1/chat/completions # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"baseten","endpointId":"v1/chat/completions","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"baseten","model":"nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B","usage":{"input_tokens":1200,"output_tokens":400}}'