Provider comparison
OpenAI vs OpenRouter
OpenAI
OpenAI's API is the gold standard for frontier LLM access, serving the flagship GPT-5 family alongside the cost-efficient GPT-4.1 and GPT-4.1 nano tiers. With 400K+ context windows, function calling, structured outputs, and a massive developer ecosystem, it powers the majority of production AI applications worldwide.
OpenRouter
OpenRouter acts as a unified gateway that routes API requests across dozens of inference providers - OpenAI, Anthropic, Google, Together, Groq, and more - through a single API key. It automatically selects the best available provider for each model, with transparent pricing and the ability to fallback if one endpoint goes down.
| Dimension | OpenAI | OpenRouter |
|---|---|---|
| Offering score | 2 | 2 |
| Product categories | 1 | 1 |
| Countries | 3 | 3 |
| Free credits | - | - |