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Introducing Respan Router

Bifrost vs Portkey (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
Engineering teams that need a gateway with routing, caching, and guardrails for production LLM apps
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

Portkey is an open-source AI gateway, now Palo Alto Networks' Prisma AIRS AI Gateway. Compare its pricing, features, pros and cons, and alternatives.

Starting Price
Free
Starting Price
Free
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
PortkeyPortkey
  • Unified API across major providers
  • Retries, fallbacks, and load balancing
  • Simple and semantic caching
  • Deterministic and LLM guardrails
  • Request logs with cost and latency analytics

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
PortkeyPortkey

Pros

  • Open-source, self-hostable gateway
  • Routing, caching, and guardrails in one gateway
  • Requests keep flowing past the free log limit
  • RBAC and semantic caching on the $49 Production plan

Cons

  • Now part of Palo Alto Networks as Prisma AIRS AI Gateway
  • Three-day log retention on the free plan
  • Requests past the log cap go unrecorded on the free plan
  • Semantic caching and LLM guardrails require Production

Bifrost or Portkey — 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 Portkey if you want

  • Multi-provider failover and load balancing
  • Cutting cost through caching
  • Guardrails on production traffic
  • Centralized LLM access management

Compare Bifrost and Portkey 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.

Try Respan free

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