SpaceXAI Models API

List models available through the SpaceXAI protocol. The response uses the OpenAI-compatible model-list shape and contains Grok-family models only.

Like every HaoAI Models API, this endpoint requires a HaoAI API key. For SpaceXAI, send it as Authorization: Bearer <your HAOAI_API_KEY>.

Legacy /grok/... API paths remain directly supported with the same behavior as /x-ai/..., without redirects. Existing model IDs such as grok/grok-4.5 also remain supported; use x-ai/grok-4.5 for new integrations. Grok names the model family; SpaceXAI is the provider and API display name.

Base URL and endpoints

Protocol root:


https://api.hao.ai/x-ai


GET https://api.hao.ai/x-ai/v1/models
GET https://api.hao.ai/x-ai/v1/models/{model_id}

List available Grok models

Terminal


curl https://api.hao.ai/x-ai/v1/models \
  -H "Authorization: Bearer $HAOAI_API_KEY"

Example response:


{
  "object": "list",
  "data": [
    {
      "id": "grok-4.5",
      "object": "model",
      "created": 0,
      "owned_by": "x-ai"
    },
    {
      "id": "grok-composer-2.5-fast",
      "object": "model",
      "created": 0,
      "owned_by": "x-ai"
    }
  ]
}

Get a model

Use either the canonical ID or the bare Grok model name in the detail path. For example:

Terminal


curl https://api.hao.ai/x-ai/v1/models/grok-4.5 \
  -H "Authorization: Bearer $HAOAI_API_KEY"

Current model catalog

Model ID	Context window	Input
`x-ai/grok-4.5`	500,000 tokens	Text and image
`x-ai/grok-composer-2.5-fast`	200,000 tokens	Text only

Use these canonical IDs in SpaceXAI Chat Completions or SpaceXAI Responses requests.