Anthropic Models on XALEN

AI safety company building the Claude model family. Available on XALEN with domain-specific optimizations.

Founded: 2021 · HQ: San Francisco, USA · 3 models available

Available Models

Claude Opus 4

Frontier

Most capable Claude model with exceptional reasoning, nuance, and safety.

Params: ~2T Context: 200K Input: $0.15 Output: $0.75 Latency: ~800ms

Claude Sonnet 4

Frontier

Best balance of intelligence and speed in the Claude family.

Params: ~500B Context: 200K Input: $0.03 Output: $0.15 Latency: ~350ms

Claude Haiku 3.5

Compact

Fastest Claude model for high-throughput APIs.

Params: ~20B Context: 200K Input: $0.008 Output: $0.04 Latency: ~150ms

Quick Start

import XALEN from 'xalen-sdk';

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

const response = await client.chat.completions.create({
  model: 'claude-opus-4',
  messages: [{ role: 'user', content: 'Hello!' }]
});

Start Using Anthropic Models

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

Get API Key

Last updated: 2026-05-21.