Keywords AI
OpenRouter vs Stainless
Compare OpenRouter and Stainless side by side. Both are tools in the LLM Gateways category.
Quick Comparison
| Category | LLM Gateways | LLM Gateways |
| Pricing | Usage-based | paid |
| Best For | Developers who want easy access to a wide variety of LLM models through a single API | AI companies and developers building API clients |
| Website | openrouter.ai | stainlessapi.com |
| Key Features |
|
|
| Use Cases |
| — |
When to Choose OpenRouter vs Stainless
- Accessing models not available through major providers
- Quick model prototyping and comparison
- Pay-per-use without provider commitments
About OpenRouter
OpenRouter is an API aggregator that provides access to dozens of LLM providers through a unified OpenAI-compatible API. It offers model routing, price comparison, and rate limit management. OpenRouter is popular with developers who want to quickly switch between models or access models not available through major providers. The platform supports pay-per-use pricing and passes through provider-specific features.
About Stainless
Powers the official SDKs for OpenAI, Anthropic, and others. The de facto gateway interface layer.
What is LLM Gateways?
Unified API platforms and proxies that aggregate multiple LLM providers behind a single endpoint, providing model routing, fallback, caching, rate limiting, cost optimization, and access control.
Browse all LLM Gateways tools →