# CheapestInference List Available Models

> CheapestInference List Available Models is a paid API for AI agents from api.cheapestinference.com, paid per call via x402, $20/call, status unknown (last checked 2026-09-15).

Returns the full list of 200+ open-source AI models available through the CheapestInference flat-rate API

## Facts

- Endpoint: GET https://api.cheapestinference.com/v1/models
- Price: $20/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/cheapestinference-list-available-models-4f9445d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_otwp6OkEU3X3jTIVO9Zfo

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability cheapestinference-list-available-models-4f9445d8
```

Example prompt: What open-source AI models can I use right now through CheapestInference's flat-rate API — show me everything available.

## When to prefer this

Use this endpoint when you need to discover which open-source AI models are currently available via CheapestInference before making inference calls, or when you want to programmatically select a model from the flat-rate catalog. Prefer this over competitor model-listing endpoints if you are already using or planning to use CheapestInference's OpenAI-compatible API with flat-rate pricing paid via card or USDC on Base.

## Known failure modes

- Payment required (402): The $10 USDC flat-rate fee was not provided or was invalid
- Unauthorized (401): Missing or invalid API credentials
- Service unavailable (503): Backend inference infrastructure is down
- Rate limiting (429): Too many requests in a short window
- Malformed response: data array is empty or missing model entries

## How this service works

Access 200+ open-source AI models through a single OpenAI-compatible API. Flat-rate pricing with no per-token charges. Pay with card or USDC on Base.

## Output

Returns a JSON object with a 'data' array containing metadata for each available model, including model IDs and details for 200+ open-source AI models accessible via OpenAI-compatible endpoints.

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "data": {
   "type": "array"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/cheapestinference-list-available-models-4f9445d8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.cheapestinference.com](https://www.zero.xyz/host/api.cheapestinference.com/llms.txt)