# Liquid LFM 2.5 1.2B Thinking Chat Completions (x402.slinkylayer.ai)

> Liquid LFM 2.5 1.2B Thinking Chat Completions (x402.slinkylayer.ai) is a paid API for AI agents from x402.slinkylayer.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Creates chat completions using the Liquid LFM 2.5 1.2B Thinking language model, a small but reasoning-capable LLM, via a pay-per-call x402 proxy.

## Facts

- Endpoint: POST https://x402.slinkylayer.ai/api/v1/proxy/:id/chat-completions-lfm-2-5-thinking
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/liquid-lfm-2-5-1-2b-thinking-chat-completions-x402-slinkylayer-ai-7b0783d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cR0FELicOag0hyNBmaGCE

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 liquid-lfm-2-5-1-2b-thinking-chat-completions-x402-slinkylayer-ai-7b0783d3 -d '<json body>'
```

Example prompt: Use the Liquid LFM 2.5 1.2B Thinking model to answer this step-by-step reasoning question: 'If a train travels 60 miles in 45 minutes, what is its speed in miles per hour and how long will it take to travel 200 miles?'

## When to prefer this

Choose this endpoint when you need a low-cost, pay-per-call chat completion with reasoning/thinking capabilities from a compact 1.2B parameter model. It is ideal for agentic workflows that require many LLM calls on a budget, tasks that benefit from chain-of-thought reasoning without needing a large frontier model, or when you want to pay in USDC per call rather than via a subscription. Prefer larger models if the task requires broad world knowledge or complex multi-step generation.

## Known failure modes

- Invalid or missing proxy ID in the URL path results in a 404 or authorization error
- Malformed message array or missing required chat fields returns a 400 validation error
- Insufficient USDC balance or failed x402 payment results in a 402 Payment Required response
- Model overload or upstream Liquid AI service unavailability returns a 503 error
- Excessively long input exceeding the model's context window may result in a truncation error or 400

## How this service works

Create a chat completion using Liquid LFM 2.5 1.2B Thinking model.

## Output

Returns a chat completion object in OpenAI-compatible format, including the assistant's generated message content produced by the Liquid LFM 2.5 1.2B Thinking model. The response includes the model's reasoning-enhanced text output and standard completion metadata such as token usage and finish reason.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/liquid-lfm-2-5-1-2b-thinking-chat-completions-x402-slinkylayer-ai-7b0783d3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.slinkylayer.ai](https://www.zero.xyz/host/x402.slinkylayer.ai/llms.txt)