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What is LLM Gateway?

LLM Gateway is an entirely open-source API gateway that provides a unified platform for routing, managing, and analyzing requests to a variety of large language model providers, including OpenAI, Anthropic, and Google Vertex AI, all through one OpenAI-compatible endpoint. It enables seamless transitions and integrations with multiple providers, while its adaptive model orchestration ensures that each request is sent to the most appropriate engine, delivering a cohesive user experience. Moreover, it features comprehensive usage analytics that empower users to track requests, token consumption, response times, and costs in real-time, thereby promoting transparency and informed decision-making. The platform is equipped with advanced performance monitoring tools that enable users to compare models based on both accuracy and cost efficiency, alongside secure key management that centralizes API credentials within a role-based access system. Users can choose to deploy LLM Gateway on their own systems under the MIT license or take advantage of the hosted service available as a progressive web app, ensuring that integration is as simple as a modification to the API base URL, which keeps existing code in any programming language or framework—like cURL, Python, TypeScript, or Go—fully operational without any necessary changes. Ultimately, LLM Gateway equips developers with a flexible and effective tool to harness the potential of various AI models while retaining oversight of their usage and financial implications. Its comprehensive features make it a valuable asset for developers seeking to optimize their interactions with AI technologies.

What is FastRouter?

FastRouter functions as a versatile API gateway, enabling AI applications to connect with a diverse array of large language, image, and audio models, including notable versions like GPT-5, Claude 4 Opus, Gemini 2.5 Pro, and Grok 4, all through a user-friendly OpenAI-compatible endpoint. Its intelligent automatic routing system evaluates critical factors such as cost, latency, and output quality to select the most suitable model for each request, thereby ensuring top-tier performance. Moreover, FastRouter is engineered to support substantial workloads without enforcing query per second limits, which enhances high availability through instantaneous failover capabilities among various model providers. The platform also integrates comprehensive cost management and governance features, enabling users to set budgets, implement rate limits, and assign model permissions for every API key or project. In addition, it offers real-time analytics that provide valuable insights into token usage, request frequency, and expenditure trends. Furthermore, the integration of FastRouter is exceptionally simple; users need only to swap their OpenAI base URL with FastRouter’s endpoint while customizing their settings within the intuitive dashboard, allowing the routing, optimization, and failover functionalities to function effortlessly in the background. This combination of user-friendly design and powerful capabilities makes FastRouter an essential resource for developers aiming to enhance the efficiency of their AI-driven applications, ultimately positioning it as a key player in the evolving landscape of AI technology.

Media

Media

Integrations Supported

Mistral AI
OpenAI
ChatGPT
Claude
DeepSeek
GPT-5.1 Instant
GPT-5.1 Pro
GPT-5.2
Gemini 3 Deep Think
Go
Google AI Studio
Grok 4.1
Grok 4.1 Fast
Groq
Perplexity
Python
Ruby
Together AI
Vertex AI
kluster.ai

Integrations Supported

Mistral AI
OpenAI
ChatGPT
Claude
DeepSeek
GPT-5.1 Instant
GPT-5.1 Pro
GPT-5.2
Gemini 3 Deep Think
Go
Google AI Studio
Grok 4.1
Grok 4.1 Fast
Groq
Perplexity
Python
Ruby
Together AI
Vertex AI
kluster.ai

API Availability

Has API

API Availability

Has API

Pricing Information

$50 per month
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

LLM Gateway

Company Location

United States

Company Website

llmgateway.io

Company Facts

Organization Name

FastRouter

Date Founded

2025

Company Location

United States

Company Website

fastrouter.ai/

Categories and Features

Categories and Features

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Popular Alternatives

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