API reference
Gradiated accepts OpenAI and Anthropic compatible inference requests, and native SystemOne decision requests.
Inference endpoints
You can use https://api.gradiated.com as the base URL in all SDKs.
| Method | Path | Purpose |
|---|---|---|
GET | /v1/models | List accessible models. |
POST | /v1/chat/completions | Send an OpenAI Chat Completions request. |
POST | /v1/responses | Send an OpenAI Responses request. |
POST | /v1/messages | Send an Anthropic Messages request. |
POST | /v1/systemone | Ask Kev for choices, probabilities, and scores. |
The model catalog is also available at /models. Use /v1/messages/count_tokens to count message input tokens.
For direct HTTP requests, send the API key as a bearer token:
Authorization: Bearer grad_...
See the SystemOne SDK guide for Kev examples and supported parameters.