Skip to the API key overview

One API key for every frontier model Cheap Claude Code API and OpenRouter alternative for Claude, GPT, Gemini, Grok and Kimi.

Published prices per 1M tokens. No model swaps. Change only the base URL and key in Claude Code, Codex CLI or Cursor.

View integration docs
https://api.zerouter.ai/v1

01 / 04

Claude Code, Codex and Cursor, unchanged

Point ANTHROPIC_BASE_URL or the OpenAI base_url at api.zerouter.ai. Your client, prompts and tools stay the same.

  1. Claude Code, Codex and Cursor, unchanged: Point ANTHROPIC_BASE_URL or the OpenAI base_url at api.zerouter.ai. Your client, prompts and tools stay the same.
  2. One API key, checked at the gate: Key, balance and concurrency are checked before the request is routed.
  3. The model you name is the model that answers: No substitution, no downgrade. claude-opus-5-5 runs as claude-opus-5-5 on the official API.
  4. Billed per token, logged per call: Input, cache and output tokens are priced at the public rate and written to your usage log.

Console

The console, before you sign in

This is the dashboard you get after sign-in, running on sample data. It tours itself; hover to take over and click any menu item.

zerouter.ai/dashboard/callerSample data
Credits$128.40

Balance

$128.40

One key calls Claude, GPT, Gemini, Grok, and Kimi. Each request is billed from your balance.

Charged after each request, based on what you actually used.

ClaudeGPTGeminiGrokKimi
Add balance

Recent spend

$3.62

Latest requests

Keys

3

Manage keys

ImageImage

Top up

Crypto channels charge no processing fee.

Try a request

Send a sample call without leaving the browser.

Ticket help

Questions about top-ups, bills, or invoices? Open a ticket and we reply to each one.

Keys

Names only. Open key management to view and copy the full key.

Manage keys

  • claude-code

    sk-zr-7f3a

    Active

  • cursor

    sk-zr-91c2

    Active

Join the group

Recharge help and model status.

XQQTGDC

Base URL

https://api.zerouter.ai

Copy

Paste this address and your key into the client, then choose the path that matches your SDK.

After sign-in the same pages show your own balance, keys and usage.Open the console →

Models

Claude, GPT, Gemini, Grok and Kimi API models

Each model ID with its endpoint and price per 1M tokens. New models appear when providers ship them.

families
0families
models
0models
protocols
3protocols

USD per 1M input tokens. Output and cache rates are on each model page.

All models and prices

Pricing

AI API pricing per million tokens

Claude, GPT, Gemini, Grok and Kimi rates in USD per 1M input and output tokens.

Converted prices are estimates. Billing and balances remain in USD.

Platforms

Why developers switch from OpenRouter

A cheaper, private OpenRouter alternative

Zerouter sends Claude, GPT-6, Gemini, Grok and Kimi requests straight to the official model APIs. Capacity comes from many independent providers instead of one account, so there is no single point of failure and no middle layer rewriting your prompts.

Request path
Your appClaude Code · Codex · Cursor · any OpenAI SDK
Zerouter gatewayOne API key · billed per token
Official model APIsAnthropic · OpenAI · Google · xAI · Moonshot
POST https://api.zerouter.ai/v1/messages·model: "claude-opus-5-5"
  • The model ID you send is the model that runs and is billed
  • Prompts reach the official API unchanged
  • Supply is spread across many providers

Straight to the official API

No model swaps, no downgrades, no hidden system prompt. Every call is logged with its model, tokens and cost.

Encrypted login and payment

Sign in with Google, email or a wallet and top up with USDC. Login and payment are encrypted the whole way.

One key

Claude Code, Codex CLI and Cursor on one API key

Zerouter is an OpenRouter alternative built for coding agents. Point Claude Code, Codex CLI or Cursor at one OpenAI-compatible base URL, compare LLM API pricing per million tokens, and pick models from the LLM leaderboard.

~/.claude/settings.json

"ANTHROPIC_BASE_URL": "https://api.zerouter.ai"Claude Code setup guide

~/.codex/config.toml

base_url = "https://api.zerouter.ai/v1"Codex CLI setup guide

Settings › Models › OpenAI Base URL

https://api.zerouter.ai/v1Cursor setup guide

Questions

What is Zerouter?

Zerouter is an AI API gateway. One Zerouter API key calls Claude, GPT, Gemini, Grok and Kimi models through OpenAI-compatible and Anthropic-compatible endpoints, billed per million tokens with no subscription.

Is Zerouter an OpenRouter alternative?

Yes. Like OpenRouter, Zerouter gives you one key and one base URL for many models. Zerouter focuses on frontier Claude, GPT, Gemini, Grok and Kimi models, and works as a drop-in base URL for Claude Code and Codex.

How much does the Zerouter API cost?

There is no monthly fee. Each model has a published price per million input and output tokens.

How do I use Claude Code with a third-party API like Zerouter?

Set ANTHROPIC_BASE_URL to https://api.zerouter.ai and ANTHROPIC_AUTH_TOKEN to your key, then run /status to confirm. Codex CLI, Cursor and OpenAI SDKs use https://api.zerouter.ai/v1 as the base URL.

Get an API key and send a request

One key requests every supported model. Pay only for actual usage.

View integration docsContact us