FastRouter PromptUnit

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FastRouter:

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.
PromptUnit:

About

PromptUnit cuts your AI API bill without hurting answer quality. Inferio, the engine inside PromptUnit, checks every request your app or agent sends. When a cheaper model is just as good for that request, it uses it; otherwise the request goes to the model you asked for. If you connect keys for more than one provider, the cheaper model can be at another of them. Setup is two settings: point your AI API address at PromptUnit and add your PromptUnit key. Your own provider keys stay yours. Works with OpenAI, Anthropic, Google Gemini, Groq and DeepSeek keys, and with your own OpenRouter key, plus tools like n8n, Open WebUI, LibreChat and Dify. The dashboard shows every request: the model asked for, the model that answered, what it cost and what it saved. It also groups requests into the steps of your app and shows what each step costs. Pricing: the first $5 of savings is free, then 20% of what PromptUnit saves you, billed weekly. Nothing if it saves nothing.
FastRouter:

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
PromptUnit:

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
FastRouter:

Audience

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

Audience

Developers, startups and teams whose apps or agents pay for AI APIs (OpenAI, Anthropic, Gemini and more) and want a lower bill without worse answers.
FastRouter:

Support

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

Support

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

API

Offers API Supported
PromptUnit:

API

Offers API Supported
FastRouter:

Screenshots and Videos

PromptUnit:

Screenshots and Videos

FastRouter:

Pricing

No information available.
Free Version Not Supported
Free Trial Supported
PromptUnit:

Pricing

Free
Free until PromptUnit saves you money. Then 20% of what it saves, billed weekly. The first $5 of savings is free. Nothing if it saves nothing.
Free Version Supported
Free Trial Not Supported
FastRouter:

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
PromptUnit:

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
FastRouter:

Training

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

Training

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

Company Information

FastRouter
Founded: 2025
United States
fastrouter.ai/
PromptUnit:

Company Information

PromptUnit
Founded: 2026
Israel
www.promptunit.ai/
FastRouter:

Alternatives

PromptUnit:

Alternatives

OpenRouter

OpenRouter

5.0 out of 5 stars
FastRouter:
PromptUnit:
FastRouter:
PromptUnit:
FastRouter:
PromptUnit:
Experiential

Experiential

Experiential Labs
FastRouter:
PromptUnit:
Pioneer

Pioneer

Pioneer.ai
FastRouter:

Categories

AI Gateways Supported
API Gateways Supported
LLM Routers Supported
PromptUnit:

Categories

AI Inference Supported
AI Tools Supported
LLM Routers Supported
FastRouter:

Integrations

OpenAI Supported
Claude Not Supported
GPT-4 Not Supported
GPT-5 Supported
GPT-5.1 Pro Supported
GPT-5.2 Instant Supported
GPT-5.2 Pro Supported
GPT-5.4 mini Supported
GPT-5.4 nano Supported
GPT-5.5 Supported
GPT-5.5 Pro Supported
GPT-5.6 Terra Supported
GPT-6.1 Terra Supported
GPT-6.2 Astra Supported
Gemini Not Supported
Gemini 2.5 Pro Supported
Grok 4 Supported
Grok 4.20 Supported
Mistral AI Supported
OpenAI Bel Supported
PromptUnit:

Integrations

OpenAI Supported
Claude Supported
GPT-4 Supported
GPT-5 Not Supported
GPT-5.1 Pro Not Supported
GPT-5.2 Instant Not Supported
GPT-5.2 Pro Not Supported
GPT-5.4 mini Not Supported
GPT-5.4 nano Not Supported
GPT-5.5 Not Supported
GPT-5.5 Pro Not Supported
GPT-5.6 Terra Not Supported
GPT-6.1 Terra Not Supported
GPT-6.2 Astra Not Supported
Gemini Supported
Gemini 2.5 Pro Not Supported
Grok 4 Not Supported
Grok 4.20 Not Supported
Mistral AI Not Supported
OpenAI Bel Not Supported
FastRouter:
Claim FastRouter and update features and information
Claim FastRouter and update features and information
PromptUnit:
Claim PromptUnit and update features and information
Claim PromptUnit and update features and information