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✰ Cheapest Claude API access

Unlimited AI Inference ✰ for Every Model

Access Claude Opus 4.6, Sonnet 4.6, Haiku 4.5 and more — with unlimited tokens at a fraction of the cost. No rate limits, no surprises.

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Built for builders

Why Developers Choose Us

No rate limits

No rate limits

Send as many requests as you need. We handle the scaling so you can focus on building.

Up to 90% cheaper

Up to 90% cheaper

Pay a fraction of direct API costs. Same models, same quality, massively lower price.

OpenAI & Anthropic compatible API

OpenAI & Anthropic compatible API

Works with both OpenAI and Anthropic SDKs out of the box. Just swap your base URL and API key — no code changes needed.

Supported Models

Access the Most Powerful AI Models

Claude Opus 4.6

The most capable model for complex reasoning, coding, and analysis. 200k context window. Perfect for agentic workflows and deep research.

Claude Opus 4.6

Claude Sonnet 4.6

The ideal balance of speed and intelligence. Great for everyday tasks, chat, and content generation at lightning speed.

Claude Sonnet 4.6

All models, one API

Access every Claude model through a single, OpenAI-compatible endpoint. Switch models with a single parameter change.

  • Claude Opus 4.6
  • Claude Sonnet 4.6
  • Claude Haiku 4.5
All models, one API
How it Works

Start Building in Four Simple Steps

Create an account

Create an account

Sign up in seconds. No credit card required to get started.

Get your API key

Get your API key

Generate an API key from your dashboard instantly.

Swap your base URL

Swap your base URL

Point your existing code to our API endpoint. That's it — fully compatible.

Build without limits

Build without limits

Enjoy unlimited inference with blazing fast responses and zero rate limits.

Integrations

Works With Your Favorite Tools

Claude
Cursor
CheetahAI
Replit
Lovable
Claude
Cursor
CheetahAI
UnlimitedClaude
Pricing

Simple, Transparent Pricing

Free

Get started for free

$0/forever

What's Included

  • ✦Haiku 4.5 + 3 open models
  • ✦No Sonnet or Opus access
  • ✦1 concurrent request
  • ✦150 total requests

Starter

For hobbyists and side projects

$10/month$19

What's Included

  • ✦All non-Opus models (8 models)
  • ✦2 concurrent requests
  • ✦5,000 daily requests
  • ✦OpenAI & Anthropic compatible API
  • ✦200k context window

ProMost Popular

For developers and startups

$20/month$39

What's Included

  • ✦All models including Opus 4.6
  • ✦4 concurrent requests
  • ✦5,000 daily requests
  • ✦Priority routing
  • ✦Email support
Testimonials

Loved by Developers

Switched from the official API and cut my costs by 85%. Same Opus quality, zero downtime. This is a no-brainer.

Arjun Mehta

Full-Stack Developer

We run thousands of Sonnet calls daily for our product. UnlimitedClaude handles it without breaking a sweat — and our bill is tiny.

Yuki Tanaka

AI Startup Founder

The OpenAI-compatible API made migration dead simple. Changed one line of code and everything just worked.

Nikos Papadopoulos

ML Engineer

Finally I can use Opus 4.6 without worrying about the bill. The 200k context window at this price is unreal.

Priya Sharma

Indie Developer

FAQ

Your questions, answered

Everything you need to know about UnlimitedClaude.

Contact Us

How is this so much cheaper than the official API?

We optimize infrastructure, batch requests intelligently, and pass the savings directly to you. Same models, same quality, just a better price. See our <a href='/#compare'>cost comparison table</a> for detailed pricing breakdowns vs the official Claude API.

Is the API compatible with my existing code?

Yes. Our API is fully OpenAI compatible. Just change your base URL and API key. Works with LangChain, LlamaIndex, Vercel AI SDK, and any OpenAI client library. Check our <a href='/docs'>API docs</a> for setup guides.

Which models are available?

The free plan includes Haiku 4.5, DeepSeek 3.2, MiniMax M2.1, and Qwen3 Coder. Starter unlocks 8 models including all Sonnet versions. Pro gives you all 10 models including Claude Opus 4.5 and Opus 4.6. See the full list on our <a href='/models'>models page</a>.

Are there rate limits?

Free plan gets 150 total requests with 1 concurrent. Starter gets 5,000 daily with 2 concurrent. Pro gets 5,000 daily with 4 concurrent. All plans include unlimited tokens per request. Compare all plans on our <a href='/pricing'>pricing page</a>.

Can I use this with Claude Code?

Absolutely. Just set ANTHROPIC_BASE_URL to our endpoint and ANTHROPIC_API_KEY to your API key. Works out of the box with Claude Code, Cline, Continue, Aider, Cursor, and other coding agents.

Is my data secure?

We don't store or log your prompts or completions. All traffic is encrypted via TLS. Your data passes through to the model and back, nothing is retained.
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Join thousands of developers using UnlimitedClaude to power their apps with the best AI models at unbeatable prices.

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