LiteLLM vs Stainless: LLM Gateways Comparison
Compare LiteLLM and Stainless side by side. Both are tools in the LLM Gateways category.
Updated March 10, 2026
The short answer
Choose LiteLLM if free open-source core with MIT license.
Choose Stainless if automates SDK dev.
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Quick Comparison
| Category | LLM Gateways | LLM Gateways |
| Pricing | Open Source | paid |
| Best For | Engineering teams who want an open-source, self-hosted LLM proxy for provider management | AI companies and developers building API clients |
| Website | litellm.ai | stainlessapi.com |
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Pros & Cons: LiteLLM vs Stainless
- +Free open-source core with MIT license
- +Unified interface to 100+ LLM providers
- +18k+ GitHub stars with strong community
- +Trusted by major enterprises
- −Hidden operational costs (USD 200-500/mo infrastructure)
- −Production latency overhead (20-40ms typical)
- −Enterprise features require USD 30k annual fee
- −Operational burden for self-hosting teams
- +Automates SDK dev
- +Type-safe code
- +Multi-language
- −Requires OpenAPI
- −Limited customization
Pricing: LiteLLM vs Stainless
- · MIT license
- · Proxy server
- · 100+ LLM APIs
- · Cost tracking
- · Cloud hosting
- · DevOps labor (USD 1.5-2k/mo)
- · Monitoring tools (USD 200-800/mo)
- · Incident response
- · SSO (Single Sign-On)
- · RBAC
- · Team-level budgets
- · Compliance features
- · Core features
- · Advanced features
- · Custom
When to Choose LiteLLM vs Stainless
- Self-hosted LLM gateway for data control
- Standardizing LLM access across teams
- Budget enforcement per team or project
About LiteLLM
LiteLLM is an open-source AI Gateway developed by BerriAI with 18,000+ GitHub stars, enabling unified access to 100+ LLM APIs through OpenAI-compatible format. Founded as a Y Combinator company with USD 1.6 million in seed funding, LiteLLM is trusted by companies like Rocket Money, Samsara, Lemonade, and Adobe. The platform provides retry and fallback logic, cost tracking, guardrails, and load balancing with MIT licensing for the core proxy. While the open-source version is free, running LiteLLM requires infrastructure costs of USD 200-500 monthly plus DevOps labor, monitoring tools, and incident response. The Enterprise version at USD 30,000 annually adds SSO, RBAC, and team-level budget enforcement. Users praise LiteLLM's unified API interface and security through open-source auditability, but note production complexity with latency overhead (20-40ms) and operational burden for self-hosting.
About Stainless
Stainless automatically generates SDKs from OpenAPI specs. Creates production-quality type-safe SDKs in multiple languages.
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.
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