Introduction

What is Router9?

Router9 is the Token Plan for AI Harness — a subscription-based LLM gateway, an OpenRouter alternative with flat monthly pricing. It fronts multiple providers behind one endpoint and routes each request for the best value, then adds rollover credits, built-in Skills, and enterprise-grade observability — for any AI harness, whether an autonomous agent or a coding CLI like Claude Code or OpenCode.

Key Features

• OpenAI-Compatible API — Drop-in replacement that works with any OpenAI SDK and any harness — Claude Code, OpenCode, Cursor, LangChain, and more
• Multi-Provider, Best Value — One endpoint fronts OpenAI, Anthropic, Google, DeepSeek and hundreds more, routed for the best performance-per-dollar
• Flat Monthly Pricing — Predictable costs with no per-token billing. Choose Free ($0), Pro ($29), or Max ($59) per plan
• Rollover Credits — On paid plans, keep unused credits into next month (60% on Pro, 80% on Max), accumulating up to 2× your monthly quota
• Harness Isolation — Each Token Plan gets its own API keys, usage quotas, and audit logs
• Skills — Built-in speech-to-text, text-to-speech, image understanding, and image generation via the Skill package or MCP — with video generation and more on the roadmap
• Audit Logging — Every request logged with model, tokens, latency, status, and full payloads

Quick Start

# Set your environment variables
export OPENAI_BASE_URL=https://api.router9.com/v1
export OPENAI_API_KEY=sk-r9k-your-key-here

# Make a request
curl $OPENAI_BASE_URL/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4o",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

See the Quick Start guide for step-by-step setup instructions.

Documentation Overview

Getting Started

• Quick Start — Get up and running in under 5 minutes
• Authentication — API key management and security

Token Plan

• Plan Management — Create and manage your token plans
• Billing & Plans — Pricing tiers, rollover credits, and subscription management
• Audit Logs — Track and export request history
• Security — Sessions, account security, and best practices

API Reference

• Chat Completions — OpenAI-compatible chat API
• Models — Available models and routing
• Anthropic API — Native Anthropic Messages endpoint
• Rate Limiting — Request quotas and 429 handling
• Errors — Error codes and response format

Tools

• Audio — Speech-to-text and text-to-speech
• Image — Image understanding and generation
• Tool Usage & Credits — How Skills consume credits