LowRouterCarbonifer
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Related Products
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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.
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About
LowRouter is a European AI gateway for agents and apps, providing one API key and one bill in euros for language models from European and international providers. Set routing rules per API key, including EU-sovereign providers only, lower-carbon routing, lower-cost routing, or a combination. Responses report the provider and region, with an estimated carbon figure when model data supports it.
Coding agents such as OpenCode, Claude Code, and Cline can use LowRouter as a custom provider. Apps built with LangChain or the OpenAI SDK can also connect. Aliases let you switch models or providers without changing code, and automatic routing can send eligible requests to another provider when a route fails.
The public model catalogue can be searched by sovereignty and carbon intensity. Tokens are billed at provider prices without a per-token markup; credit top-ups carry a fee, and there is no subscription. LowRouter is operated by Carbonifer SAS in Nantes, France.
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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
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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
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Audience
Developers and AI engineering teams wanting a tool providing access, optimized performance, and cost governance under a single API
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Audience
Developers and companies that run or build AI agents and need EU-sovereign routing, per-request carbon estimates, and one bill in euros.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
No information available.
Free Version
Not Supported
Free Trial
Supported
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Pricing
€5/top-up
Pay as you go with a €5 minimum credit top-up. Tokens are billed at provider prices without a per-token markup. A 5.5%–8.5% fee plus €0.30 applies to each top-up, depending on billing situation; applicable VAT is added at checkout. Credits expire 12 months after purchase, and there is no subscription.
Free Version
Not Supported
Free Trial
Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationFastRouter
Founded: 2025
United States
fastrouter.ai/
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Company InformationCarbonifer
Founded: 2023
France
lowrouter.ai
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Claude Code
Not Supported
Claude Opus 4
Supported
Cline
Not Supported
GPT-5.1
Supported
GPT-5.2
Supported
GPT-5.2 Thinking
Supported
GPT-5.3 Instant
Supported
GPT-5.4 Pro
Supported
GPT-5.4 mini
Supported
GPT-5.4 nano
Supported
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Integrations
Claude Code
Supported
Claude Opus 4
Not Supported
Cline
Supported
GPT-5.1
Not Supported
GPT-5.2
Not Supported
GPT-5.2 Thinking
Not Supported
GPT-5.3 Instant
Not Supported
GPT-5.4 Pro
Not Supported
GPT-5.4 mini
Not Supported
GPT-5.4 nano
Not Supported
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