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Welcome to ScaleLLM

ScaleLLM is the backend for vibe coding. One API key to power all your AI coding tools—Cursor, Windsurf, Claude Code, and more.

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What is ScaleLLM?

ScaleLLM is a unified API gateway that gives you:
  • One API key for 7 SOTA models (Claude 4.5, Gemini 3)
  • Drop-in compatibility with OpenAI and Anthropic SDKs
  • Smart fallbacks when providers have issues
  • Multiplied credits (up to 20x value on your spend)
No new SDKs to learn. Just change your base URL and API key.

Quick Start

Get running in 2 minutes.

Setup Cursor

Configure Cursor with ScaleLLM.

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How It Works

Your Tool (Cursor, Claude Code, etc.)
           │
           ▼
    ┌─────────────┐
    │  ScaleLLM   │  ← One API key
    │   Gateway   │  ← Smart routing
    └─────────────┘
           │
     ┌─────┴─────┐
     ▼           ▼
 Anthropic    Google
 (Claude)    (Gemini)
ScaleLLM acts as a passthrough—we route your requests to the appropriate provider. We don’t store your prompts or train on your data.

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Supported Models

ModelProviderBest For
claude-opus-4.5AnthropicComplex reasoning
claude-sonnet-4.5AnthropicBalanced performance
claude-haiku-4.5AnthropicFast responses
gemini-3-pro-previewGoogleLong context
gemini-3-pro-image-previewGoogleMultimodal
gemini-3-flashGoogleSpeed & cost

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Supported Tools

Cursor

Claude Code

Windsurf

Codex

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Why ScaleLLM?

Works with any tool that supports OpenAI or Anthropic APIs. Switch between Cursor and Windsurf without changing your API setup.
If Claude is down, we automatically route to your backup model. No more broken workflows.
Just set your base URL and API key. That’s it. No proxy setup, no complex configuration.
Pay $20, get 400 API credits. Up to 8x value depending on your plan.

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Platform Stats

MetricValue
SOTA Models7
Uptime SLA99.9%
Global LatencyUnder 100ms
Migration1 line change

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Get Started

1

Sign Up

Create an account at scalellm.dev/signup
2

Get Your API Key

Copy your sk_... API key from the dashboard
3

Configure Your Tool

Set base URL to https://api.scalellm.dev/v1 and add your key