# Perplexity AI List Models

> Perplexity AI List Models is a free API for AI agents from pplx.x402.paysponge.com, Free, status unknown (last checked 2026-09-15).

Returns the list of available language models offered by the Perplexity AI API

## Facts

- Endpoint: GET https://pplx.x402.paysponge.com/v1/models
- Price: Free
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/perplexity-acaf5a72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4XTdkcJuJe2TrVgDexajJ

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 perplexity-acaf5a72
```

Example prompt: Can you pull up all the models currently available through the Perplexity AI API so I know which ones I can use for my search queries?

## When to prefer this

Use this endpoint when you need to programmatically discover which Perplexity AI models are currently available before making a chat or search completion request. Prefer this over hardcoding model names, as the available model list may change over time.

## Known failure modes

- Authentication failure if API key is missing or invalid (401 Unauthorized)
- Rate limit exceeded (429 Too Many Requests)
- Service temporarily unavailable (503)
- Empty or malformed response if provider has no models registered

## How this service works

List Models

## Output

A list of model objects available through the Perplexity AI API, each containing at minimum a model ID and name, allowing the caller to discover which models can be used in subsequent API calls.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/perplexity-acaf5a72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pplx.x402.paysponge.com](https://www.zero.xyz/host/pplx.x402.paysponge.com/llms.txt)