Models - LETHE

LETHE exposes two public model ids. Underlying provider routing is intentionally hidden, responses are sanitized so no upstream provider name leaks through, even in streamed output.

Model	Description	Input
`lethe`	LETHE private text model. 1M context.	Text only
`lethe-vision`	LETHE private multimodal model.	Image and video input

Claude Code’s default model ids (opus, sonnet, haiku) and any claude-* / anthropic.* id are automatically aliased to lethe, point Claude Code at LETHE with no model-name changes. lethe-private and lethe-text also alias to lethe; lethe-image aliases to lethe-vision.

If you send a vision/image input to lethe (text-only), the request is rejected with invalid_model, switch to lethe-vision.

List models

curl https://asklethe.ai/v1/models \
  -H "Authorization: Bearer $LETHE_API_KEY"

{
  "object": "list",
  "data": [
    { "id": "lethe", "object": "model", "created": 0, "owned_by": "lethe" },
    { "id": "lethe-vision", "object": "model", "created": 0, "owned_by": "lethe" }
  ]
}

Get a single model

curl https://asklethe.ai/v1/models/lethe \
  -H "Authorization: Bearer $LETHE_API_KEY"

{
  "id": "lethe",
  "object": "model",
  "created": 0,
  "owned_by": "lethe"
}

Requesting an unknown id returns 404 with code model_not_found.