Kong AI Gateway vs Stainless (2026)
Updated March 10, 2026
vs
Overview
Rating
10.0 / 10
Rating
10.0 / 10
Best For
Enterprises using Kong who want to extend their API gateway with AI capabilities
Best For
AI companies and developers building API clients
Product Summary
Kong AI Gateway extends the popular Kong API gateway with AI-specific capabilities including multi-LLM routing, prompt engineering, semantic caching, rate limiting, and cost management.
Product Summary
Powers the official SDKs for OpenAI, Anthropic, and others. The de facto gateway interface layer.
Starting Price
$0Per month
Starting Price
$0Per month
Free Trial
Yes
Free Trial
Yes
Free Version
Yes
Free Version
Yes
Website
Website
Key features
Core capabilities each platform advertises.
- AI traffic management
- Multi-LLM load balancing
- Request/response transformation
- Authentication and authorization
- Plugin ecosystem
- SDK generation
- API interface
- Type-safe clients
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Developer-friendly platform
- Production-ready
- Good performance
- Active development
Cons
- Enterprise pricing varies
- Setup complexity
- Learning curve
Pros
- Automates SDK dev
- Type-safe code
- Multi-language
Cons
- Requires OpenAPI
- Limited customization
Kong AI or Stainless — which should you choose?
Choose Kong AI if you wantChoose if you want
- Enterprise AI API management
- Load balancing across LLM providers
- AI traffic governance and security
- Multi-tenant AI access control
- API lifecycle management for AI
Choose Stainless if you wantChoose if you want
Data not available
Compare Kong AI Gateway and Stainless on your own traffic
10KFree traces/mo
1,000+Models
5 minSetup
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.
Try Respan free