01.AI Models on XALEN

Chinese AI lab building efficient multilingual models.

Founded: 2023 · HQ: Beijing, China · 2 models available

Available Models

Yi Lightning

Open Source

01.AI fast inference model with strong multilingual reasoning.

Params: 200B MoE Context: 128K Input: $0.04 Output: $0.08 Latency: ~300ms

Yi Large

Open Source

Large Yi model with 200K context and strong analysis.

Params: 300B Context: 200K Input: $0.06 Output: $0.12 Latency: ~450ms

Quick Start

import XALEN from 'xalen-sdk';

const client = new XALEN({ apiKey: 'xln_test_YOUR_KEY' });

const response = await client.chat.completions.create({
  model: 'yi-lightning',
  messages: [{ role: 'user', content: 'Hello!' }]
});

Start Using 01.AI Models

All models available through a single API. No separate accounts needed.

Get API Key

Last updated: 2026-05-21.