9Router - Free AI Router

Introduction

In AI development and everyday usage, interrupted API calls, exhausted quotas, and slow model responses are all too common frustrations. 9Router - Free AI Router is a smart routing tool built specifically to solve these problems. It automatically switches between major AI models like Claude, Codex, and Gemini CLI, with a built-in three-tier fallback mechanism that keeps your workflow running without interruption. Whether you're a seasoned developer or an AI enthusiast, 9Router helps you get the most out of your existing subscriptions while prioritizing free or low-cost models to significantly reduce usage expenses.

Key Features

• Smart three-tier fallback: When the primary model is unavailable, times out, or hits quota limits, it automatically switches to backup models in priority order, ensuring continuous task execution.
• Multi-model aggregated routing: Supports mainstream AI models including Claude Code, Codex, and Gemini CLI through a unified entry point—no manual switching required.
• Cost optimization strategy: Prioritizes free or low-cost models and only taps into paid subscriptions when necessary, maximizing savings.
• Real-time status monitoring: Clearly displays model availability, response latency, and quota usage to support informed decision-making.
• One-click integration: Provides a simple API and CLI interface for quick integration into existing development environments and automated workflows.

Highlights

• Zero-interruption experience: Automatic failover keeps coding, debugging, and conversations flowing smoothly—no more "model unavailable" pop-ups.
• Extremely low cost barrier: Makes full use of free tiers and budget-friendly models, ideal for high-frequency usage scenarios, especially for individual developers and small teams.
• No extra configuration needed: Works out of the box—just plug in your existing API keys and enjoy the efficiency boost from smart routing.
• Highly customizable: Define routing policies based on task type, budget limits, response speed, and more to flexibly adapt to different needs.

Who It's For

AI application developers who need stable, low-cost model calls to keep production environments running without downtime. Independent developers and creators who use tools like Claude and Codex daily for coding and writing and want to cut subscription costs. Technical teams and small-to-medium businesses looking to maximize the efficiency and reliability of multiple AI models under tight budgets. AI enthusiasts and researchers who frequently experiment with different models and need a unified management and auto-switching tool.