GET

/v1/models/grok/grok-4.3

provider grokstatus activefirst seen Apr 17, 2026last seen 9m ago
rawIdgrok-4.3
displayNameGrok 4.3
idgrok-grok-4-3
activitychat
schemaEndpointIdv1/chat/completions
input · output
releasedAt1776384000 — Apr 17, 2026
firstSeenAt1776384000 — Apr 17, 2026
lastSeenAt1794561327 — 9m ago
pricing
$1.25 / 1M input · $2.5 / 1M output · base rate; long prompts re-quote → open calculator
input_tokens (usage) · cache_read_tokens (usage) · image_tokens (usage) · output_tokens (usage) · web_searches (usage)
contextWindow1000000
modalities{"input":["text","image"],"output":["text"]}
capabilities{"reasoning":true,"frequency_penalty":true,"max_tokens":true,"presence_penalty":true,"reasoning_effort":true,"response_format":true,"seed":true,"stop":true,"temperature":true,"tool_choice":true,"tools":true,"top_p":true,"structured_outputs":true}
requestMap{"thinking":null,"maxTokensField":null,"developerRole":false,"replayReasoningContent":null,"store":null,"strictTools":null,"sessionAffinity":null,"cacheControl":null,"toolStream":null,"reasoningEffort":false}
maxOutput · knowledgeCutoff · openWeights · weightsUrl · providerMetadatanot published by this provider’s list endpoint

Endpoints & schemas

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

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

Sources

fieldrecorded source
contextWindowhttps://docs.x.ai/docs/models.md

docs-derived

contextWindow

modalitiesSource unknown — no source URL recorded.

listing

pricingSource unknown — no source URL recorded.

listing

reasoninghttps://docs.x.ai/developers/models/grok-4.3.md

docs-derived

Capabilities

Source trace
9bcd456b37a6fa5bb1b1fed6acd53a2d8128e8f1b60d3eea76f44e3badc4ebc2
capabilities.reasoninghttps://docs.x.ai/developers/models/grok-4.3.md

docs-derived

Capabilities.Reasoning

Source trace
9bcd456b37a6fa5bb1b1fed6acd53a2d8128e8f1b60d3eea76f44e3badc4ebc2
capabilities.frequency_penaltyhttps://docs.x.ai/openapi.json

upstream-spec

/properties/frequency_penalty

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.max_tokenshttps://docs.x.ai/openapi.json

upstream-spec

/properties/max_completion_tokens

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.presence_penaltyhttps://docs.x.ai/openapi.json

upstream-spec

/properties/presence_penalty

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.reasoning_efforthttps://docs.x.ai/openapi.json

upstream-spec

/properties/reasoning_effort

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.response_formathttps://docs.x.ai/openapi.json

upstream-spec

/properties/response_format

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.seedhttps://docs.x.ai/openapi.json

upstream-spec

/properties/seed

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.stophttps://docs.x.ai/openapi.json

upstream-spec

/properties/stop

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.temperaturehttps://docs.x.ai/openapi.json

upstream-spec

/properties/temperature

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.tool_choicehttps://docs.x.ai/openapi.json

upstream-spec

/properties/tool_choice

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.toolshttps://docs.x.ai/openapi.json

upstream-spec

/properties/tools

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.top_phttps://docs.x.ai/openapi.json

upstream-spec

/properties/top_p

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
capabilities.structured_outputshttps://docs.x.ai/openapi.json

upstream-spec

/properties/response_format

Source trace
af1fcb7a3bc2cefd9dfd881c3680d80a3732d22cce41c97eae67bf1ac4c76476
{
  "endpointId": "v1/chat/completions",
  "fetchedAt": 1791090607
}
maxOutputhttps://docs.x.ai/openapi.json

Value unknown (null); not published in the checked source · checked 2026-10-22.

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/grok/chat/v1/chat/completions # request schema
$ curl -X POST https://modelschemas.com/v1/validate -d '{"provider":"grok","endpointId":"v1/chat/completions","payload":{…}}'
$ curl -X POST https://modelschemas.com/v1/estimate -d '{"provider":"grok","model":"grok-4.3","usage":{"input_tokens":1200,"output_tokens":400}}'