Course
Give your AI a permanent memory of your business. A course for people who use ChatGPT or Claude daily.Compound Context
LiteLLM logo

LiteLLM

4.1
โ€ข

LiteLLM simplifies how you use many different AI language models. It provides a single way to connect to over 100 models, handle consistent responses, track spending, and manage backups if a model fails. This makes it much easier for developers to build powerful AI applications without complex setups for each AI.

About LiteLLM

Who It's For

This tool is for developers and teams who want to easily work with many different AI models. It's perfect if you need to switch between various AI providers, track costs across projects, or ensure your AI applications stay reliable by automatically switching models if one has issues. It suits those using Python or managing AI access centrally.

What You Get

You get a simple way to call over 100 AI models using a familiar setup. LiteLLM gives you consistent results, even from different providers, and helps you keep an eye on costs and set budgets. It also includes features like trying another model if the first one doesn't work and tools for logging what your AI models are doing.

How It Works

LiteLLM works in two main ways. You can use its Python code library directly in your projects to talk to different AIs. Alternatively, you can set up a central LiteLLM Proxy Server. This server acts as a gateway, letting multiple users or projects access many AIs, balancing the workload, and tracking all usage from one spot.

Stay in the loop

Weekly roundup of new AI agents. No spam, unsubscribe anytime.

Subscribe and get the free 2026 AI Agents Field Guide

Join 1,500+ AI builders ยท weekly, no spam

Features & Capabilities

โš™๏ธ Universal LLM Gateway

Unified API for 100+ LLMs

Call over 100 Large Language Models using a single, consistent OpenAI input/output format.

Consistent Output Formatting

Ensures text responses are always available at a standard path, simplifying integration across providers.

Input/Output Translation

Automatically translates requests and responses to match the specific requirements of various LLM providers.

Retry and Fallback Logic

Implements automatic retries and fallbacks across multiple LLM deployments for enhanced reliability.

๐Ÿ’ฐ Cost & Access Control

Spend Tracking and Budgeting

Monitor LLM expenditures and set budget limits per project to manage costs effectively.

Rate Limiting

Enforce usage limits per user or project via the proxy to prevent abuse and manage resource allocation.

Virtual Keys with Spend Tracking

Manage access and track spend for individual users or projects using customizable virtual keys within the proxy.

๐Ÿ“Š Observability & Debugging

Integrated Logging Callbacks

Easily log LLM inputs and outputs to popular observability tools like Lunary, MLflow, Langfuse, and Helicone.

Standardized Exception Handling

Maps exceptions from all supported providers to OpenAI's exception types for consistent error management.

Request Transformation Visualization

Provides an endpoint to see how LiteLLM normalizes and transforms LLM API requests internally for debugging.

Cost, Usage, and Latency Tracking for Streaming

Monitor real-time metrics for streaming responses via custom callback functions.

๐Ÿš€ Deployment & Integration Options

LiteLLM Proxy Server (LLM Gateway)

Deploy a central LLM Gateway to unify access, load balance, and track costs across multiple LLMs for platform teams.

LiteLLM Python SDK

Integrate directly into Python applications for calling 100+ LLMs with built-in load balancing and cost tracking.

Use Cases

Centralized LLM Gateway for Enterprise AI Management

Companies leveraging multiple LLMs face challenges with API inconsistencies, reliability, and cost control. LiteLLM Proxy Server acts as a unified LLM gateway, centralizing access to over 100 models with consistent APIs, built-in retry/fallback mechanisms, and robust tools for tracking spend, setting budgets, and applying rate limits. This streamlines enterprise AI operations and provides critical financial oversight.

B2B SaaSFor: Gen AI Enablement Teams

Accelerating LLM Application Development and Iteration

Developers building AI applications struggle with the fragmentation of LLM APIs, which complicates experimentation and switching between models. LiteLLM's Python SDK provides a consistent OpenAI-like interface for over 100 LLMs, enabling rapid prototyping, seamless model swapping, and simplified integration into existing Python codebases and AI frameworks like LangChain or LlamaIndex. This significantly accelerates the development cycle.

Software DevelopmentFor: Developers

Building Resilient and Observable LLM-Powered Applications

Deploying LLM applications to production requires high reliability, robust error handling, and comprehensive observability to monitor performance and debug issues. LiteLLM provides automatic retry and fallback mechanisms to handle provider outages, standardizes error handling across all LLMs, and integrates with leading observability platforms. This allows teams to track LLM inputs/outputs, costs, usage, and latency, enabling robust and monitorable AI solutions.

Enterprise SoftwareFor: ML Platform Teams

Secure and Governed LLM Access for Enterprise Policies

Organizations need to control access to various LLMs, ensure API key security, and enforce usage policies to prevent misuse and manage costs. LiteLLM Proxy Server offers hooks for authentication, rate limiting, and secure storage of API keys. It allows ML Platform teams to centralize LLM access, implement virtual keys, track spend per project/user, and apply guardrails, ensuring secure and governed interaction with all connected LLMs.

Financial ServicesFor: Security Teams

Frequently asked questions

Tags

Specifications

Deployment
API
Self-hosted
Browser
Target Audience
Individual
Startup
Business
Complexity
Developer

Integrations

Slack
OpenAI
Anthropic
xAI
VertexAI
NVIDIA

Want your AI tool listed here?

Start with a free eligibility check.

Submit