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Scheduled launch — Sep 4, 2026

ARBR is listed on AI Kaptan and will enter the daily launch competition on that day. Community upvotes open on launch day.

ARBR
Developer Tools
Free

ARBR

ARBR is an open-source, self-hosted AI control plane giving teams one gateway across their AI stack to route, govern, observe, evaluate, and deploy models.

Rating
0
Reviews
0
Upvotes
about 1 hour ago
Listed
Open Source
Developer Tools
Artificial Intelligence
AI Gateway
Control Plane
Self-Hosted
LLM Observability
AI Governance
Tool information
Provider
Project ARBR
Platforms
Web
Linux
macOS
Windows
Docker
Languages
English
API Available
Yes
Added to directory
about 1 hour ago
Last updated
about 1 hour ago
Rating
Not available
Pricing
Free

About ARBR

What the tool does and who it's for

ARBR is an open-source, MIT-licensed, and self-hosted AI control plane and proxy gateway designed for applications running AI in production. Connecting via a single OpenAI-compatible endpoint, ARBR enables development teams to route, govern, observe, evaluate, and deploy across multiple AI providers and models. It provides request-level cost tracking, automated task optimization recommendations, budget guardrails, and human-in-the-loop deterministic rerouting rules without requiring code changes to client applications.

Key capabilities

OpenAI-compatible single gateway endpoint for drop-in proxy integration
Support for 100+ providers and over 3,000 models including native adapters
Cost guardrails and budget enforcement with alerting, downgrading, or blocking caps
Recommendation engine to spot premium models doing cheap tasks and propose cheaper alternatives
Human-approved, deterministic, and instantly reversible routing rule creation
Built-in evaluation engine to replay candidate models against frozen traffic samples before deployment
Granular observation and cost breakdown by application, workflow, model, and provider
Realtime voice proxy support via WebSocket endpoint relaying frames unmodified

Pricing

Free — plans below

Open Source

Most popular

Free

  • MIT-licensed open source codebase
  • Self-hosted control plane and gateway
  • OpenAI-compatible endpoint
  • Observation and cost tracking
  • Recommendation engine and traffic evaluation
  • Deterministic routing rules and budget limits

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