Unified API gateway for intelligent AI model routing and cost optimization
From $199/mo (free plan available)Visit WebsiteFreemiumVisit Website
Tracked since2026
The Bottom Line
- Price
- From $199/mo (free plan available). Compare plans
Key facts
- Single OpenAI-compatible API to route requests across 200+ LLMs with automatic model selection, failover, and cost optimization.
- Regular Insights feature audits traffic and provides ranked cost-saving recommendations like caching, flex tier, and model swaps.
- Enterprise-grade governance with RBAC, provisioning keys, guardrails, and optional self-hosting for data sovereignty.
Pros
- Unified API eliminates vendor lock-in and simplifies model management across providers.
- Built-in cost optimization features (caching, flex tier, model swaps) can significantly reduce LLM spend.
- Automatic failover and fallback models ensure high reliability and uptime for AI applications.
Cons
- Advanced cost insights (model swap and compression recommendations) require a paid tier with token costs.
- Self-hosting option is only available on the Enterprise plan, which may have higher pricing.
What is FastRouter.ai?
FastRouter is a unified API gateway that provides enterprise AI teams with intelligent routing, cost optimization, and reliability across 200+ language models. It offers a single OpenAI-compatible API to access models from all major providers, with automatic model selection, failover, and governance. The platform includes built-in observability with real-time metrics, tracing, and alerts, as well as regular cost insights that identify savings opportunities through caching, flex tier, model swaps, and prompt compression. Teams can control costs with smart routing to cost-efficient models, batch processing, and granular access controls. FastRouter also supports bring-your-own-keys (BYOK), virtual model aliases for seamless model swaps, and an MCP gateway for exposing tools to any model. For organizations requiring data sovereignty, the full gateway can be self-hosted on their own infrastructure under the Enterprise plan.
Key Features
- Automatic Model Selection: Routes each request to the best model based on complexity, domain, and cost.
- Flex Pricing: Append :flex to eligible models for lower token costs on non-urgent workloads.
- Prompt Caching: Reuses repeated prompt context at a fraction of the input price.
- Virtual Model Aliases: Map one stable alias to multiple models and providers for seamless swaps without code changes.
- MCP Gateway: Register MCP tool servers once and expose their tools to any routed model.
- Insights: Weekly read-only analysis that identifies cost-saving opportunities with evidence and direct links to make changes.
Pricing Plans
Pricing checked Oct 6, 2026
| Plan | Price | Details |
|---|---|---|
| Starter | $0 / month |
+5 moreShow less
|
| Pro | $199 / month |
+7 moreShow less
|
| Business | $799 / month |
+7 moreShow less
|
| Enterprise | Custom |
+6 moreShow less
|
Is FastRouter.ai worth the price?
Good value
FastRouter.ai's pricing is very generous for teams that need a unified LLM gateway, especially with a free tier offering 1M requests/month and $0 markup on all models.
The Pro tier at $199/month for 5M requests and Business at $799/month for 50M requests are competitively priced compared to usage-based alternatives, though enterprises will need to negotiate custom terms. This is best for startups, growing teams, and organizations that want predictable costs without per-request surcharges.
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FastRouter.ai FAQ
How does FastRouter.ai help a development team manage multiple AI model providers without rewriting code?
FastRouter.ai provides a single OpenAI-compatible API that connects to 200+ models from all major providers, so teams can switch models or providers by changing a single parameter without code changes. This eliminates vendor lock-in and simplifies model management across providers.
How does FastRouter.ai differ from Replicate for enterprise AI teams?
FastRouter.ai offers a unified API gateway with built-in cost optimization features like caching, flex tier, and model swaps, whereas Replicate is primarily a model hosting platform. FastRouter also includes automatic failover and granular access controls, making it more suitable for enterprise governance and cost management.
What kind of users might find FastRouter.ai's advanced cost insights unavailable without a paid plan?
Teams that want to use model swap and compression recommendations to reduce LLM spend will need a paid tier, as those advanced cost insights require token costs. The free tier provides basic functionality but not those optimization features.
Which teams benefit most from FastRouter.ai's unified API gateway?
Enterprise AI teams that need to manage multiple model providers, control costs, and ensure high reliability benefit most. The platform's automatic failover, cost optimization, and governance features are designed for teams that require robust observability and access controls.
How is FastRouter.ai priced?
FastRouter.ai offers a free tier with basic access, and paid plans that provide more usage and advanced features like model swap and compression recommendations. The Enterprise plan includes the option to self-host the gateway on your own infrastructure.
Can FastRouter.ai integrate with existing tools through an MCP gateway?
Yes, FastRouter.ai includes an MCP gateway that exposes tools to any model, allowing teams to integrate their existing tools and workflows seamlessly. This works with the unified API to provide a consistent interface.
Does FastRouter.ai support bring-your-own-keys for model providers?
Yes, FastRouter.ai supports bring-your-own-keys (BYOK), so teams can use their existing provider accounts and API keys. This allows them to maintain existing billing relationships while benefiting from the unified routing and optimization.
How does FastRouter.ai ensure high reliability for AI applications?
FastRouter.ai provides automatic failover and fallback models, so if one model or provider fails, requests are routed to an alternative model without downtime. Combined with built-in observability and alerts, this ensures high uptime for AI applications.
Source: fastrouter.ai