# WebLLM

> High-performance in-browser language model inference engine leveraging WebGPU for hardware acceleration without server-side processing.

- Website: https://webllm.mlc.ai/?ref=devshelf.io
- DevShelf page: https://devshelf.io/resource/webllm
- Pricing: Free
- Tags: Open Source, No sign-up
- Categories: [LLMs & Inference](https://devshelf.io/category/llms-inference.md)
- Last checked: 2026-11-02

## About

WebLLM is a high-performance, in-browser language model inference engine that leverages WebGPU for hardware acceleration, enabling powerful LLM operations directly within web browsers without server-side processing. It provides full OpenAI API compatibility including JSON-mode and function-calling, supports diverse models like Llama and Mistral, and allows custom model integration. Features include Web Worker support, streaming, and npm integration.

## Alternatives

- [Sipp Chat](https://devshelf.io/resource/sipp-chat.md): Run open-source LLMs directly in your browser using WebGPU for client-side local inference without external server dependencies. (pricing: Free)
- [Forge](https://devshelf.io/resource/forge.md): Test open source machine learning models directly in the browser using WebGPU without installation or accounts. (pricing: Free)
- [Ollama](https://devshelf.io/resource/ollama.md): Run open-source large language models locally or via cloud infrastructure with API integration for coding agents and development workflows. (pricing: Pay-as-you-go)

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