LiteLLM
Open source Python library to call 100+ LLMs with one unified OpenAI-compatible interface
5 Best Alternatives to LiteLLM
Hosted routing with 100+ models, no self-hosting required
Unified API access to 300+ AI models from a single endpoint
Hosted LLM gateway with similar features plus guardrails
Full-stack LLM gateway with routing, fallbacks, semantic caching, and guardrails
Intelligent model routing vs LiteLLM's manual configuration
AI model router that automatically picks the best LLM for each task
Python agent framework with its own LLM abstraction layer and providers
The most widely used framework for building LLM-powered applications and agents
High-throughput inference server for self-hosted open models
High-throughput LLM inference server with PagedAttention for production deployments
Quick Comparison
| Tool | Rating | Pricing | Category | Why Consider It |
|---|---|---|---|---|
| OpenRouter | ★★★★☆ | Freemium | Chatbots & Assistants | Hosted routing with 100+ models, no self-hosting required |
| Portkey | ★★★★☆ | Freemium | Code Assistants | Hosted LLM gateway with similar features plus guardrails |
| NotDiamond | ★★★★☆ | Freemium | Productivity & Workflow | Intelligent model routing vs LiteLLM's manual configuration |
| LangChain | ★★★★★ | Open Source | Code Assistants | Python agent framework with its own LLM abstraction layer and providers |
| vLLM | ★★★★★ | Open Source | Research & Science | High-throughput inference server for self-hosted open models |