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What is Substrate?

Substrate acts as the core platform for agentic AI, incorporating advanced abstractions and high-performance features such as optimized models, a vector database, a code interpreter, and a model router. It is distinguished as the only computing engine designed explicitly for managing intricate multi-step AI tasks. By simply articulating your requirements and connecting various components, Substrate can perform tasks with exceptional speed. Your workload is analyzed as a directed acyclic graph that undergoes optimization; for example, it merges nodes that are amenable to batch processing. The inference engine within Substrate adeptly arranges your workflow graph, utilizing advanced parallelism to facilitate the integration of multiple inference APIs. Forget the complexities of asynchronous programming—just link the nodes and let Substrate manage the parallelization of your workload effortlessly. With our powerful infrastructure, your entire workload can function within a single cluster, frequently leveraging just one machine, which removes latency that can arise from unnecessary data transfers and cross-region HTTP requests. This efficient methodology not only boosts productivity but also dramatically shortens the time needed to complete tasks, making it an invaluable tool for AI practitioners. Furthermore, the seamless interaction between components encourages rapid iterations of AI projects, allowing for continuous improvement and innovation.

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

GPT-5
GPT-5.2
GPT-5.2 Instant
GPT-5.2 Thinking
GPT-5.4 mini
GPT-5.4 nano
GPT-5.5
GPT-5.5 Pro
GPT-5.6 Sol
GPT-5.6 Terra
Gemini 3 Deep Think
Gemini 3 Flash
Gemini 3.5 Pro
Grok 4
Grok 4.1
Grok 4.3
OpenAI
Python
Slack
Stable Diffusion

Integrations Supported

GPT-5
GPT-5.2
GPT-5.2 Instant
GPT-5.2 Thinking
GPT-5.4 mini
GPT-5.4 nano
GPT-5.5
GPT-5.5 Pro
GPT-5.6 Sol
GPT-5.6 Terra
Gemini 3 Deep Think
Gemini 3 Flash
Gemini 3.5 Pro
Grok 4
Grok 4.1
Grok 4.3
OpenAI
Python
Slack
Stable Diffusion

API Availability

Has API

API Availability

Has API

Pricing Information

$30 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

Substrate

Date Founded

2023

Company Location

United States

Company Website

www.substrate.run/

Company Facts

Organization Name

FastRouter

Date Founded

2025

Company Location

United States

Company Website

fastrouter.ai/

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