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OpenRouter API vs Together AI API

A head-to-head look at OpenRouter API and Together AI API across pricing, features, strengths, and weaknesses.

FeatureOpenRouter APITogether AI API
Editorial score★ 4.6 / 5★ 4.5 / 5
PricingUsage-based; pay per token across providersUsage-based; fine-tuning and dedicated endpoints
Pros
  • +Switch models without changing code
  • +Access many providers at once
  • +One key and one API for dozens of providers
  • +Cost-effective open-model hosting
  • +Solid fine-tuning support
  • +Cost-effective hosting for open-weight models
Cons
  • −Adds a routing layer between you and providers
  • −Slight latency from the routing layer
  • −Per-model pricing can shift without notice
  • −Catalog focused on open models
  • −Catalog focuses on open, not closed frontier models
  • −Fine-tuning still needs your own dataset
VisitView full review →View full review →

Editor’s verdict

OpenRouter is a unified API gateway routing to many model providers with a single key, simplifying multi-model experimentation; Together AI offers a deeper platform with fine-tuning, dedicated endpoints, and open-source model hosting. Choose OpenRouter for easy multi-model access; choose Together AI for fine-tuning and dedicated infrastructure.

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