Claude API Access.
1M Context.
Fixed Weekly Pricing.
Access Claude Opus, Sonnet, and Haiku through a fixed-price API compatible with OpenAI and Anthropic workflows. Get 1M context windows, predictable weekly pricing, and clear limits for production use.
1const response = await fetch(2 "https://api.selectapi.vip/v1/chat/completions",3 {4 method: "POST",5 headers: {6 "Content-Type": "application/json",7 "Authorization": "Bearer YOUR_API_KEY"8 },9 body: JSON.stringify({10 model: "claude-opus-4-6",11 messages: [12 { role: "user", content: "Hello!" }13 ]14 })15 }16);1718const data = await response.json();19console.log(data.choices[0].message.content);Model Catalog
Claude Opus, Sonnet, and Haiku through one compatible API
Use Claude Opus 4.6 and Claude Sonnet 4.6 with 1M context windows, plus Claude Haiku for fast tasks, through a single API endpoint compatible with OpenAI and Anthropic clients.
Claude Opus 4.6
1M context window. Most capable reasoning model for long documents and complex analysis.
claude-opus-4-6Claude Sonnet 4.6
1M context window. Balanced performance and speed for large projects and everyday work.
claude-sonnet-4-6Claude Haiku 4.5
Fastest Claude model. Great for high-volume, low-latency tasks.
claude-haiku-4-5Claude Opus 4.6
1M context window. Most capable reasoning model for long documents and complex analysis.
claude-opus-4-6Claude Sonnet 4.6
1M context window. Balanced performance and speed for large projects and everyday work.
claude-sonnet-4-6Claude Haiku 4.5
Fastest Claude model. Great for high-volume, low-latency tasks.
claude-haiku-4-5Pricing
A fixed-price Claude API built for predictable usage
Per-token billing makes Claude API costs hard to forecast. SelectAPI gives you predictable weekly pricing with transparent operating limits from day one.
SelectAPI
All-in-one
50 RPM · 700 requests / 5 hours
Pricing
Features and Access
Support and Experience
Official Providers
(Anthropic direct)
usage-based
Pricing
Features and Access
Support and Experience
How It Works
Switch to a Claude API endpoint in minutes
Use your existing OpenAI or Anthropic tooling. Change the base URL, keep your workflow, and start calling Claude through SelectAPI.
Get your API key
Request your API key and start using Claude models through SelectAPI.
Point to our endpoint
Replace your base URL with https://api.selectapi.vip/v1. It works with existing OpenAI and Anthropic SDKs.
Use Claude models
Use Opus and Sonnet with 1M context, or switch to Haiku for speed by changing the model parameter.
1curl https://api.selectapi.vip/v1/chat/completions \2 -H "Content-Type: application/json" \3 -H "Authorization: Bearer YOUR_API_KEY" \4 -d '{5 "model": "claude-opus-4-6",6 "messages": [7 {"role": "user", "content": "Hello!"}8 ],9 "temperature": 0.710 }'https://api.selectapi.vip/v1Security and Privacy
Your Data. Your Business.
Built from the ground up with privacy as a core principle. We cannot see your data because we do not keep it.
No Logs
We do not log your prompts or responses. Your conversations remain yours.
No Storage
Nothing is stored on our servers. Requests are proxied in real time and discarded immediately.
No Training
Your data is never used to train any AI model. Zero retention means minimal exposure.
Anonymous Payments
Pay with cryptocurrency or cardless ATM deposits. No personal data is required.
Payment Methods
Pay Your Way. No Personal Data Needed.
We accept privacy-friendly payment methods so you do not have to share personal information.
Cardless ATM
Deposit directly at an ATM using a reference code. No bank account or card is required.
Available Banks (Mexico)
Cryptocurrency
Pay with crypto for maximum privacy. Fast, secure, and simple.
Accepted
FAQ
Frequently Asked Questions
Everything you need to know about using SelectAPI as a fixed-price Claude API, from compatibility and pricing to privacy.