About

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.

Pricing & Fees

Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans. The product itself can be started for free, while underlying model costs are billed by each provider.
Free tier: A free starting plan is offered, and 8 providers (including Kiro AI, iFlow, Qwen, OpenCode Free and Gemini) are listed as free forever.
Provider costs: Smart 3-tier routing can fall back to budget models such as GLM at $0.60, MiniMax at $0.20, or Kimi at $9/mo when subscription quotas run out.
Billing model: You connect your own provider accounts via OAuth, API key, or browser cookie, so you pay providers directly rather than through 9Router.
Installation: Available via npm (npm install -g 9router) and works with CLI/IDE tools like Claude Code, Codex, Cursor, Cline, and Copilot through one OpenAI-compatible endpoint.

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.

About

Key Features

Pricing & Fees

Who It's For

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