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OpenRouter

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Unified API for 400+ models

Free | Usage-basedLLM APIsLast verified: 2026-01-18

Overview

OpenRouter provides a unified OpenAI-compatible API for 400+ models from 60+ providers. No markup on token prices - you pay exact provider rates.

Works with

REST APIOpenAI compatible

Pricing

$0Free
  • 25+ free models
  • 50 requests/day
  • 4 free providers
  • Chat and API access
  • Activity logs
MOST POPULAR
5.5% fee on creditsPay-as-you-go
  • 300+ models
  • 60+ providers
  • No token markup
  • Min $0.80 fee per purchase
  • 5% fee for crypto
  • High rate limits
  • Auto-routing and failovers
  • Prompt caching
5% usage feeBYOK
  • Use your own API keys
  • First 1M req/month free
  • Then 5% of provider cost
  • Manage limits with provider
CustomEnterprise
  • Bulk discounts
  • Volume commits
  • SSO/SAML
  • Contractual SLAs
  • Dedicated limits
  • Managed policy enforcement
  • Invoicing options

Pros

  • +400+ models via one API
  • +No markup on token prices
  • +Automatic failovers
  • +Zero completion insurance
  • +OpenAI SDK compatible
  • +Free tier available

Cons

  • -5.5% fee on credit purchases
  • -Dependent on upstream providers
  • -Free tier has low rate limits

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