RouteLLM

RouteLLM

LMSYS
+
+

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About

OpenRouter Fusion turns a prompt into a small multi-model deliberation, making combined model results as easy to call as a single model. A panel of expert models analyzes the prompt in parallel with web search and web fetch enabled, then a judge model compares their responses and returns structured analysis that includes consensus, contradictions, partial coverage, unique insights, and blind spots. The final answer is written from that analysis, helping users benefit from multiple perspectives rather than relying on one model alone. Fusion is built for cases where a single model is not enough, such as research, expert critique, compare-and-contrast prompts, multi-domain questions, or any task where being wrong is expensive. Users can call Fusion directly through the openrouter/fusion model alias, enable it as the fusion server tool, or configure it through the Fusion plugin; all three entry points use the same pipeline.

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 Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

AI users and developers wanting to run multiple models side by side, compare their strengths, and combine them into a stronger answer

Audience

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

Support

Phone Support Not Supported
24/7 Live Support Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Supported
Free Trial Not Supported

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

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 Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

OpenRouter
Founded: 2023
United States
openrouter.ai/fusion

Company Information

LMSYS
github.com/lm-sys/RouteLLM

Alternatives

Alternatives

Categories

AI Gateways Supported
LLM Routers Supported

Categories

AI Gateways Supported
LLM Routers Supported

Integrations

Amazon Bedrock Not Supported
Anyscale Not Supported
Chatbot Arena Not Supported
Claude Not Supported
GPT-4 Not Supported
Gemini Not Supported
Gemini Enterprise Not Supported
GitHub Not Supported
Mixtral 8x7B Not Supported
Ollama Not Supported
OpenAI Not Supported
OpenRouter Supported
OwlCAD Supported
Python Not Supported
Taam Cloud Not Supported
Together AI Not Supported

Integrations

Amazon Bedrock Supported
Anyscale Supported
Chatbot Arena Supported
Claude Supported
GPT-4 Supported
Gemini Supported
Gemini Enterprise Supported
GitHub Supported
Mixtral 8x7B Supported
Ollama Supported
OpenAI Supported
OpenRouter Not Supported
OwlCAD Not Supported
Python Supported
Taam Cloud Supported
Together AI Supported
Claim OpenRouter Model Fusion and update features and information
Claim OpenRouter Model Fusion and update features and information
Claim RouteLLM and update features and information
Claim RouteLLM and update features and information