RelayPlane vs Bifrost
Bifrost is a high-performance enterprise gateway. RelayPlane is a cost-intelligence layer for agent developers. Different tools, different jobs.
TL;DR
Choose RelayPlane if you want:
- One-command npm setup, no Docker or Go required
- Per-request, per-agent cost tracking in local SQLite
- Smart routing that optimizes for cost, not just uptime
- Runaway loop detection and budget enforcement per agent
- All data stays on your machine, no cloud dependency
Bifrost may fit if you need:
- High-throughput, production-grade load balancing
- Enterprise SSO, clustering, and HashiCorp Vault integration
- Prometheus metrics and team-level virtual key governance
Feature Comparison
| Feature | RelayPlane | Bifrost |
|---|---|---|
| Installation method RelayPlane is one npm command. Bifrost requires Docker, a Go binary, or a web UI setup step. | npm install -g @relayplane/proxy | npx @maximhq/bifrost or Docker or Go |
| Setup time RelayPlane is ready in seconds. Bifrost requires configuring providers through a web UI before use. | One command, proxy starts on localhost:4100 | Web UI configuration + environment setup |
| Primary use case RelayPlane is built to track and reduce AI spend. Bifrost optimizes for speed, reliability, and uptime. | Cost intelligence for agent developers | High-throughput enterprise API gateway |
| Per-request cost tracking RelayPlane tracks exact token costs per request in local SQLite with per-agent breakdown. | Budget management by virtual keys (team governance) | |
| Smart model routing RelayPlane routes to Haiku, Sonnet, or Opus based on task complexity to minimize cost. Bifrost routes for availability. | Load balancing + failover (uptime, not cost) | |
| Per-agent cost breakdown RelayPlane fingerprints system prompts to track spending per agent. Bifrost tracks at the virtual key level. | Team/virtual key level only | |
| Runaway loop detection RelayPlane detects and stops runaway agent loops before they burn through your budget. | ||
| Node.js / npm native RelayPlane is built for Node.js environments. Bifrost is written in Go with an npx convenience wrapper. | Go-native (npx wrapper available) | |
| Self-hosted local RelayPlane runs entirely on your local machine. Bifrost is designed for server or container deployment. | ✓ (localhost:4100) | Server deployment required |
| Enterprise features Bifrost has deep enterprise integrations. RelayPlane is focused on individual and small-team developer experience. | Basic | SSO, clustering, HashiCorp Vault, Prometheus |
| Data privacy RelayPlane stores all data locally. Nothing leaves your machine. Bifrost integrates with Maxim AI cloud observability. | Cloud observability (Maxim AI) | |
| License | MIT | Apache 2.0 |
| Target audience | Solo devs, AI agent developers | Engineering teams, enterprises |
Why Agent Developers Choose RelayPlane
Purpose-built cost intelligence, not just routing
RelayPlane tracks cost per request, per agent, and per session in local SQLite. Bifrost is engineered for speed and reliability . Cost savings are not its focus.
Zero-friction npm-native install
npm install -g @relayplane/proxy && relayplane start. No Docker, no Go binary, no YAML config. Bifrost requires Docker or Go and a web UI setup step before your first request goes through.
Agent-native by design
RelayPlane fingerprints system prompts to break down costs per agent, detects runaway loops, and can auto-downgrade specific agents when they exceed budget. Bifrost is built for teams routing production traffic uniformly.
Truly local-first with full data privacy
All cost data lives in ~/.relayplane/ as SQLite + JSONL files. No account required, no cloud dependency for core features. Bifrost's observability story leans on Maxim AI cloud.
Different Tools for Different Jobs
Bifrost is excellent at what it does: a fast, reliable Go-based gateway for engineering teams that need enterprise-grade load balancing, failover, and team governance. If you are running production LLM infrastructure at scale with SSO and Vault requirements, Bifrost was designed for you.
RelayPlane is built for a different problem: the solo developer or small team building AI agents who needs to understand and control costs. Per-agent spend breakdowns, runaway loop detection, complexity-based routing, and a zero-config npm install are all optimized for the agent developer workflow, not enterprise ops.