Keywords AI
Portkey vs Stainless
Compare Portkey and Stainless side by side. Both are tools in the LLM Gateways category.
Quick Comparison
| Category | LLM Gateways | LLM Gateways |
| Pricing | Freemium | paid |
| Best For | Engineering teams who need a reliable, observable gateway for production LLM applications | AI companies and developers building API clients |
| Website | portkey.ai | stainlessapi.com |
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When to Choose Portkey vs Stainless
- Enterprise LLM deployment with reliability
- Multi-provider failover and load balancing
- Cost reduction through semantic caching
About Portkey
Portkey is an AI gateway that provides a unified API for 200+ LLMs with built-in reliability features including automatic retries, fallbacks, load balancing, and caching. The platform includes observability with detailed request logs, cost tracking, and performance analytics. Portkey also offers guardrails, access controls, and virtual keys for managing LLM usage across teams.
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 →