---
title: "Hosted Decision Models | System One"
description: "Decision models you can call on system-one.dev. Each page says what inputs it can read, how many questions you can ask at once, and how many credits a call costs."
canonical: "https://system-one.dev/en/models"
language: "en"
---

# Hosted Decision Models | System One

Decision models you can call on system-one.dev. Each page says what inputs it can read, how many questions you can ask at once, and how many credits a call costs.

This list shows every decision model you can call on system-one.dev. Each page says what inputs it can read, how many questions you can ask at once, and how many credits a call costs.

- [Jev](https://system-one.dev/en/models/jev) — TypeSafe's decision model. It reads text and JSON and returns a choice, a score, or a yes/no answer.
- [Clef Flash](https://system-one.dev/en/models/clef-flash) — The cheapest of the three Clef models. Use it for high-volume, cost-sensitive classification and routing.
- [Clef](https://system-one.dev/en/models/clef) — The highest-priced of the three Clef models. It reads text, JSON, and images and returns a choice, a score, or a yes/no answer.
- [Clef Omni](https://system-one.dev/en/models/clef-omni) — A decision model that reads text and images and returns a choice, a score, or a yes/no answer.
- [Decider](https://system-one.dev/en/models/decider-v1-1) — Reads text and JSON and returns a choice, a score, or a yes/no answer.

Prices are in credits. Token usage is shown for reference only; you are charged by model, number of questions and 4KB blocks.

[Open GET /v1/models](https://system-one.dev/v1/models)
## Start here

- [Developer documentation](https://system-one.dev/en/docs)
- [TypeScript SDK](https://system-one.dev/en/sdk)
- [API reference](https://system-one.dev/en/api)
- [Models](https://system-one.dev/en/models)
- [Authentication](https://system-one.dev/en/auth.md)
- [Pricing](https://system-one.dev/en/pricing)
- [OpenAPI specification](https://system-one.dev/openapi.json)
- [Agent integration guide](https://system-one.dev/en/skill.md)
- [About](https://system-one.dev/en/about)
- [Contact](https://system-one.dev/en/contact)
- [Playground samples](https://system-one.dev/en/demo)
- [Blog](https://system-one.dev/en/blog)
- [SDK source](https://github.com/ziyu/system-one-sdk)
- [@system-one-ai/core (npm)](https://www.npmjs.com/package/@system-one-ai/core)