RouteLLM

RouteLLM

LMSYS
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About

FastRouter is a unified API gateway that enables AI applications to access many large language, image, and audio models (like GPT-5, Claude 4 Opus, Gemini 2.5 Pro, Grok 4, etc.) through a single OpenAI-compatible endpoint. It features automatic routing, which dynamically picks the optimal model per request based on factors like cost, latency, and output quality. It supports massive scale (no imposed QPS limits) and ensures high availability via instant failover across model providers. FastRouter also includes cost control and governance tools to set budgets, rate limits, and model permissions per API key or project, and it delivers real-time analytics on token usage, request counts, and spending trends. The integration process is minimal; you simply swap your OpenAI base URL to FastRouter’s endpoint and configure preferences in the dashboard; the routing, optimization, and failover functions then run transparently.

About

Developed by LM-SYS, RouteLLM is an open-source toolkit that allows users to route tasks between different large language models to improve efficiency and manage resources. It supports strategy-based routing, helping developers balance speed, accuracy, and cost by selecting the best model for each input dynamically.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers and AI engineering teams wanting a tool providing access, optimized performance, and cost governance under a single API

Audience

AI developers and researchers looking to optimize workflows using multiple LLMs through intelligent routing and performance-aware model selection

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

FastRouter
Founded: 2025
United States
fastrouter.ai/

Company Information

LMSYS
github.com/lm-sys/RouteLLM

Alternatives

Alternatives

Categories

Categories

Integrations

OpenAI
Amazon Bedrock
Anyscale
Chatbot Arena
GPT-5.1 Pro
GPT-5.2 Pro
GPT-5.2 Thinking
GPT-5.4
GPT-5.4 Pro
GPT-5.4 mini
GPT-5.4 nano
GPT-5.6 Luna
GPT-5.6 Sol
GPT‑5.4 Thinking
Gemini 2.5 Pro
Gemini 3 Deep Think
Gemini 3 Flash
Mistral AI
Ollama
Taam Cloud

Integrations

OpenAI
Amazon Bedrock
Anyscale
Chatbot Arena
GPT-5.1 Pro
GPT-5.2 Pro
GPT-5.2 Thinking
GPT-5.4
GPT-5.4 Pro
GPT-5.4 mini
GPT-5.4 nano
GPT-5.6 Luna
GPT-5.6 Sol
GPT‑5.4 Thinking
Gemini 2.5 Pro
Gemini 3 Deep Think
Gemini 3 Flash
Mistral AI
Ollama
Taam Cloud
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