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Introducing Respan Router

Bifrost vs Kong AI Gateway (2026)

Updated March 10, 2026

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Overview

Rating
10.0 / 10
Rating
10.0 / 10
Best For
Engineering teams that want a self-hosted, open-source LLM gateway in their own infrastructure
Best For
Enterprises using Kong who want to extend their API gateway with AI capabilities
Product Summary

Bifrost is an open-source LLM gateway from Maxim AI, written in Go, that puts 1,000+ models from 20+ providers behind one OpenAI-compatible API.

Product Summary

Kong AI Gateway extends the popular Kong API gateway with AI-specific capabilities including multi-LLM routing, prompt engineering, semantic caching, rate limiting, and cost management.

Starting Price
Free
Starting Price
$0Per month
Free Trial
Yes
Free Trial
Yes
Free Version
Yes
Free Version
Yes
Website

Key features

Core capabilities each platform advertises.

BifrostBifrost
  • OpenAI-compatible API for 1,000+ models from 20+ providers
  • Automatic failover and load balancing
  • Semantic caching
  • MCP gateway for tool calls
Kong AI GatewayKong AI Gateway
  • AI traffic management
  • Multi-LLM load balancing
  • Request/response transformation
  • Authentication and authorization
  • Plugin ecosystem

Strengths and tradeoffs

What each tool does well, and the limitations to keep in mind.

BifrostBifrost

Pros

  • Apache 2.0 license, free to self-host
  • 1,000+ models behind one OpenAI-compatible API
  • Starts with a single npx command or Docker image
  • Semantic caching and MCP gateway included

Cons

  • You run, scale, and monitor the gateway yourself
  • Observability is exported to other tools rather than stored in the gateway
  • Evals live in Maxim's separate platform, priced per seat from $29/month
  • Guardrails, SSO, RBAC, and audit logs require Enterprise
Kong AI GatewayKong AI Gateway

Pros

  • Developer-friendly platform
  • Production-ready
  • Good performance
  • Active development

Cons

  • Enterprise pricing varies
  • Setup complexity
  • Learning curve

Bifrost or Kong AI — which should you choose?

Choose Bifrost if you want

  • Self-hosting an LLM gateway in your own infrastructure
  • Failing over between providers during outages
  • Cutting repeat-request cost with semantic caching
  • Governing tool calls through an MCP gateway

Choose Kong AI if you want

  • Enterprise AI API management
  • Load balancing across LLM providers
  • AI traffic governance and security
  • Multi-tenant AI access control
  • API lifecycle management for AI

Compare Bifrost and Kong AI Gateway on your own traffic

10KFree traces/mo
1,000+Models
5 minSetup

Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.

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