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Basic Information

LitServe is a developer-focused serving framework for building and deploying complete AI systems including agents, multi-component pipelines, RAG servers, MCP servers, and single- or multi-model inference endpoints. It exposes simple Python primitives (for example LitAPI and LitServer) where users implement setup and predict methods to wire together models, databases, and custom logic without writing YAML or bespoke MLOps glue code. The project targets a wide range of model types including LLMs, vision, audio, and classical ML and supports both self-hosting and one-click deployment to a managed cloud. LitServe is designed to give fine-grained control over batching, streaming, multi-GPU execution, autoscaling, and worker behavior while remaining compatible with common ML stacks such as PyTorch, JAX, and TensorFlow.

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Features
LitServe provides features tailored to AI serving: a Python-first API for composing multi-model pipelines and agents, batching and streaming support, multi-worker handling optimized for AI workloads, and GPU autoscaling. It advertises a performance improvement over plain FastAPI and supports OpenAPI and OpenAI-compatible request handling. The framework can host diverse models and tools including LLMs, RAG, multimodal models, audio and vision stacks, and classical ML. It includes MCP server support, asynchronous concurrency, and options to bring-your-own inference engines. Managed hosting adds built-in authentication, load balancing, observability, versioning, serverless scale-to-zero, and enterprise compliance features. The repo also provides examples and community templates for quick starts and production patterns.
Use Cases
LitServe lowers the engineering barrier to deploy production AI by consolidating model orchestration, custom prediction logic, and infrastructure controls into a single Python interface. Developers can prototype agents, chatbots, RAG systems, or multi-model pipelines locally and then deploy the same code self-hosted or to a managed cloud with autoscaling and security options. Built-in batching, streaming, and multi-GPU support improve throughput and latency for inference workloads. The framework reduces MLOps glue work by handling worker autoscaling, OpenAPI compliance, and engine integration, while managed hosting offers audit logs, cost controls, and compliance for enterprise users. Community examples and an Apache 2.0 license make it practical to extend and contribute.

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