Choose a model

model names a model from the catalog. The canonical form is provider/model, and GET /v1/models lists every id you can use. The catalog is also listed on helping.io/models.

curl https://api.helping.io/v1/models \
  -H "Authorization: Bearer $HELPINGIO_API_KEY"

{
  "data": [
    {
      "created": 1767225600,
      "id": "anthropic/claude-fable-5",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "created": 1767225600,
      "id": "anthropic/claude-fable-5-1",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "created": 1767225600,
      "id": "anthropic/claude-opus-4-8",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "created": 1767225600,
      "id": "anthropic/claude-opus-5-5",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "created": 1767225600,
      "id": "anthropic/claude-sonnet-5",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "created": 1767225600,
      "id": "anthropic/claude-sonnet-5-5",
      "object": "model",
      "owned_by": "anthropic"
    },
    {
      "created": 1767225600,
      "id": "google/gemini-3.1-flash-lite",
      "object": "model",
      "owned_by": "google"
    },
    {
      "created": 1767225600,
      "id": "google/gemini-3.5-flash",
      "object": "model",
      "owned_by": "google"
    },
    {
      "created": 1767225600,
      "id": "google/gemini-3.5-flash-lite",
      "object": "model",
      "owned_by": "google"
    },
    {
      "created": 1767225600,
      "id": "google/gemini-3.6-flash",
      "object": "model",
      "owned_by": "google"
    },
    {
      "created": 1767225600,
      "id": "google/gemini-3.7-flash",
      "object": "model",
      "owned_by": "google"
    },
    {
      "created": 1767225600,
      "id": "google/gemini-3.8-flash",
      "object": "model",
      "owned_by": "google"
    },
    {
      "created": 1767225600,
      "id": "openai/gpt-5.4-mini",
      "object": "model",
      "owned_by": "openai"
    }
  ],
  "object": "list"
}

A bare name resolves when exactly one active model carries it: claude-sonnet-5 reaches the provider-qualified id anthropic/claude-sonnet-5. If more than one provider serves that name the request is a 400 telling you to use the provider/model form. model is required on a first turn; a missing value is a 400 with the message model is required.

Which settings each model accepts is on Compatibility and versioning.