Library/FastChat
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lm-sys/FastChat

FastChat

An open platform for training, serving, and evaluating large language models. Release repo for Vicuna and Chatbot Arena.

Builder

lm-sys

lm-sys

lm-sys • individual

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39,454

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4,789

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Created

Mar 19, 2023

Project creation date

README Summary

FastChat is an open platform that provides comprehensive tools for training, serving, and evaluating large language models. It serves as the official release repository for Vicuna (a ChatGPT-level chatbot) and Chatbot Arena (a crowdsourced platform for LLM evaluation). The platform offers distributed multi-model serving capabilities and standardized APIs for easy integration.

AI Dev Skills

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Large Language Model TrainingConversational AIModel Serving and DeploymentLLM Fine-tuningModel Evaluation and BenchmarkingDistributed TrainingInstruction FollowingChat Model OptimizationMulti-turn Dialogue SystemsModel QuantizationInference Optimization

Tags

Large Language Model TrainingConversational AIModel Serving and DeploymentLLM Fine-tuningModel Evaluation and BenchmarkingDistributed TrainingInstruction FollowingChat Model OptimizationMulti-turn Dialogue SystemsModel QuantizationInference OptimizationOpen Source AIMultimodalModel Inference OptimizationTextConversation AIAI/ML PlatformsAI Model BenchmarkingLarge Language ModelsLLM Model Evaluation and ComparisonModel Competition and RankingConversational AI DevelopmentAPI Development for LLMsResearch and AcademiaAI SafetyCustom LLM TrainingChatbot DevelopmentLLM Evaluation and BenchmarkingLLM EvaluationSelf-hostedLLM API Service DeploymentMulti-model LLM ServingCloud APIOn-premiseDeveloper ToolsPython

Taxonomy

Recent Activity

Updated 10 months ago

7 Days

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30 Days

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90 Days

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Quality

production
Quality
high
Maturity
production

Categories

Dev Tools & AutomationPrimaryLearning ResourcesEvals & BenchmarkingInference & ServingML Platform & InfrastructureSafety & AlignmentMultimodal AISearch & KnowledgeOther AI / MLFoundation ModelsModel Training

PM Skills

Developer Platform

Languages

Python100.0%

Timeline

Project created
Mar 19, 2023
Forked
Mar 22, 2026
Your last push
10 months ago
Upstream last push
10 months ago
Tracked since
Jun 2, 2025

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