LLM Gateway
Unify access to OpenAI, Anthropic, Google Gemini, xAI Grok, and more through one OpenAI-compatible gateway supporting text, image, video, speech, and embeddings.
FastRouter’s BYOK LLM Gateway lets teams bring their own API keys while operating 100+ models through one OpenAI-compatible control plane. Centralize routing, failover, observability, guardrails, cost limits, and usage visibility without rebuilding provider-specific integrations. Give developers the flexibility to choose the right model while platform teams keep production AI secure, reliable, and cost-aware.
Centralize model access, routing, governance, reliability, and observability through one OpenAI-compatible gateway.
Unify access to OpenAI, Anthropic, Google Gemini, xAI Grok, and more through one OpenAI-compatible gateway supporting text, image, video, speech, and embeddings.
Route each request to the best available model based on cost, latency, quality, or throughput, without hard-coding model choices across applications.
Create stable model aliases with prioritized provider and model lists, enabling centralized swaps, policy-based selection, and seamless changes without application redeploys.
Keep AI applications online during outages, rate limits, or model failures by automatically rerouting requests through healthy fallback models and providers.
Set spend limits, roles, API-key controls, and access policies at the gateway so teams can innovate without uncontrolled usage or surprise bills.
Track latency, errors, token usage, costs, request logs, and quality signals across every provider from one consistent operational dashboard.
Connect your provider access through FastRouter’s OpenAI-compatible endpoint so applications call one stable API. Teams can continue using familiar SDK patterns while centralizing model access, key management strategy, and gateway-level controls.
See how production AI teams simplify provider access, reduce risk, and control spend with FastRouter.
"Excellent platform to test the latest LLMs for our use case. With new LLMs coming out every few weeks and benchmarks not giving the full picture, I rely on Fastrouter.ai to optimize my cost vs quality balance."
"Amazing product. Have had a great experience using FastRouter. Reliable access to models across providers helps removes the worry about outages or vendor lock-in."
"FastRouter is a good value add, specifically when you are not sure which LLM is better for your use cases. You can play around with models, can compare against them, and then use normal OpenAI compatible APIs call to leverage the full potential of it."
"Excellent platform to test the latest LLMs for our use case. With new LLMs coming out every few weeks and benchmarks not giving the full picture, I rely on Fastrouter.ai to optimize my cost vs quality balance."
"Amazing product. Have had a great experience using FastRouter. Reliable access to models across providers helps removes the worry about outages or vendor lock-in."
"FastRouter is a good value add, specifically when you are not sure which LLM is better for your use cases. You can play around with models, can compare against them, and then use normal OpenAI compatible APIs call to leverage the full potential of it."
"Excellent platform to test the latest LLMs for our use case. With new LLMs coming out every few weeks and benchmarks not giving the full picture, I rely on Fastrouter.ai to optimize my cost vs quality balance."
"Amazing product. Have had a great experience using FastRouter. Reliable access to models across providers helps removes the worry about outages or vendor lock-in."
"FastRouter is a good value add, specifically when you are not sure which LLM is better for your use cases. You can play around with models, can compare against them, and then use normal OpenAI compatible APIs call to leverage the full potential of it."
FastRouter helps teams operate multi-provider AI with less complexity and more control.
One OpenAI-compatible API connects 100+ models without maintaining provider-specific integrations.
Automatic failover and fallback lists keep production AI running through provider issues.
Spend limits, roles, guardrails, and access controls enforce policies across every application.
Dashboards, logs, alerts, and evaluations reveal cost, latency, errors, and quality trends.
The platform team behind production-ready LLM operations.
FastRouter is built for teams moving beyond experimental prompts into production AI operations. Its platform brings LLM routing, observability, governance, guardrails, evaluations, and cost controls into a single OpenAI-compatible control plane. Instead of managing brittle provider-specific code, scattered dashboards, and disconnected billing views, teams can standardize model access through one gateway while retaining flexibility across 100+ models. FastRouter’s vision is to become the operational foundation for reliable, cost-aware, and secure AI applications. From startups testing new model releases to enterprises coordinating usage across multiple teams, the platform helps engineering, product, finance, and security leaders work from the same source of truth.
A BYOK LLM gateway lets your team connect and manage your own provider API keys behind a single gateway layer. Instead of hard-coding separate integrations for every provider, applications call one OpenAI-compatible endpoint. FastRouter then applies routing, failover, observability, access controls, spend limits, and guardrails consistently across models and providers.
Get practical answers about routing, governance, failover, and BYOK setup.
Single endpoint for OpenAI SDK compatibility.
Routing across major AI model providers.
Controls for secure production AI operations.
Tell us about your model providers, traffic patterns, and governance needs so we can help you evaluate the right FastRouter setup.
To help us assist you faster, please include the reason for your message so the relevant team can reach out as soon as possible.
To help us assist you faster, please include the reason for your message so the relevant team can reach out as soon as possible.