> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Clef (System One) API

> Clef (System One) API on Venice: decision access at $0.05 per 1M input tokens. Private, with zero data retention. Pricing, specs and code examples.

> [accordion] Plain-text specification
>
> ## Clef (System One) API
>
> Clef (System One) is a decision model by Clef, available on the Venice API as `clef-api`. It runs privately, with zero data retention.
>
> ### Clef (System One) API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `clef-api` | Standard | Private | $0.05 / $0.05 per 1M |
>
> ### Clef (System One) specifications
>
> | Spec | Value |
> | - | - |
> | Provider | Clef |
> | Released | Oct 6, 2026 |
> | Privacy | Private |
> | Status | Beta |
>
> ### How to use the Clef (System One) API
>
> Send requests to `POST https://api.venice.ai/api/v1/decisions` with `"model": "clef-api"` and your API key.
>
> ```bash theme={"system"}
> curl https://api.venice.ai/api/v1/decisions \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "clef-api",
>     "state": "Help! My payouts have been failing for 3 days.",
>     "questions": {
>       "is_urgent": { "type": "noul", "instructions": "Does this need a reply within the hour?" }
>     }
>   }'
> ```
>
> ### Related models
>
> * [Jev (System One) API](https://docs.venice.ai/models/jev.md): \$0.042 / Free per 1M


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