[Feature request] Support loading GGUF and GGML model format

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Description

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Contributor guide

Research direction

Explore how GGUF/GGML model formats are loaded in other LLM serving frameworks (e.g., llama.cpp, Ollama). Identify the necessary changes in FastChat's model loader to support these formats. Focus on the `fastchat.model.model adapter` and related modules.

Tech stack

python

Domain

machine learningbackend

Issue type

Feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

3

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

Half day

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

Active

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

Mostly clear

Prerequisites

PythonFamiliarity with LLM model formats

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

50