LLMsRelay/Docs
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Models Endpoint

List the Claude API models available to an API key through the /v1/models endpoint.

Endpoint: GET /v1/models. Auth: x-api-key: sk-cs4-*. Public catalogue: Opus 5, Fable 5, Opus 4.8, Opus 4.7, Opus 4.6, Sonnet 5, Sonnet 4.6, Haiku 4.5. Aliases: opus, sonnet, haiku.

List Models

GET https://api.llmsrelay.com/v1/models
curl https://api.llmsrelay.com/v1/models \
  -H "x-api-key: YOUR_API_KEY"
Responsejson
{
  "data": [
    {"id": "claude-opus-5", "object": "model"},
    {"id": "claude-fable-5", "object": "model"},
    {"id": "claude-opus-4.8", "object": "model"},
    {"id": "claude-opus-4.7", "object": "model"},
    {"id": "claude-opus-4.6", "object": "model"},
    {"id": "claude-sonnet-5", "object": "model"},
    {"id": "claude-sonnet-4.6", "object": "model"},
    {"id": "claude-haiku-4.5", "object": "model"},
  ]
}

The response contains canonical IDs only. Request aliases such as opus, sonnet, and haiku are resolved server-side but are not separate catalogue entries.

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