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L4 · Models & Training

OpenRouter

Unified API gateway providing access to 300+ AI models from 60+ providers.

Updated May 2026

Overview

Founded
2023
Headquarters
San Francisco, CA
Ownership
Private
Segment
Model Distribution & Serving

Product overview

OpenRouter offers a single OpenAI-compatible API for developers to access over 300 AI models from providers like OpenAI, Anthropic, Google, and Meta, with intelligent routing, automatic fallbacks, and real-time performance optimization. Used by 5M+ global users and 250k+ apps for building reliable AI applications without vendor lock-in. It stands out from direct provider APIs by unifying fragmented ecosystems, eliminating multiple keys and billing relationships, and adding edge routing for better uptime and cost control.

Revenue model

Pay-as-you-go credits charged at provider token rates plus a 5.5% platform fee (e.g., $3/$15 per 1M input/output tokens for Claude Sonnet 4.5); free tier for limited use of 25+ models; enterprise plans with volume discounts, annual commits, and custom pricing.

Moat

OpenRouter's key competitive moat is its data-driven routing intelligence, fueled by a powerful network effect from processing 8.4 trillion tokens monthly across 2.5 million users, which refines algorithms for optimal price, latency, uptime, and throughput selection among over 400 models—creating a flywheel that new entrants cannot replicate without equivalent scale. High switching costs arise from developers fully replacing provider APIs with OpenRouter's unified endpoint, plus proprietary edge architecture ensuring 100% uptime with minimal 25ms overhead and asset-light scaling.

Stack lineage

What powers OpenRouter

L6Applications
  • Microsoft Copilot

    OpenRouter hosts Microsoft Copilot's models — e.g. microsoft/phi-4-mini-instruct appears in their public model catalog.

L4Models
  • Google DeepMind

    OpenRouter hosts Google DeepMind's models — e.g. google/gemini-3.5-flash appears in their public model catalog.

  • Allen Institute for AI (Ai2)

    OpenRouter hosts Allen Institute for AI (Ai2)'s models — e.g. allenai/olmo-3-32b-think appears in their public model catalog.

  • Mistral AI

    OpenRouter hosts Mistral AI's models — e.g. mistralai/mistral-medium-3-5 appears in their public model catalog.

  • Meta AI

    OpenRouter hosts Meta AI's models — e.g. meta-llama/llama-guard-4-12b appears in their public model catalog.

  • OpenAI

    OpenRouter hosts OpenAI's models — e.g. openai/gpt-chat-latest appears in their public model catalog.

L2Cloud
  • Alibaba Cloud

    OpenRouter hosts Alibaba Cloud's models — e.g. qwen/qwen3.7-max appears in their public model catalog.

L1Silicon
  • NVIDIA

    OpenRouter hosts NVIDIA's models — e.g. nvidia/nemotron-3-nano-omni-30b-a3b-reasoning:free appears in their public model catalog.

What OpenRouter powers

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