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FastChat Alternatives
Similar projects and alternatives to FastChat
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Stream
Stream - Scalable APIs for Chat, Feeds, Moderation, & Video. Stream helps developers build engaging apps that scale to millions with performant and flexible Chat, Feeds, Moderation, and Video APIs and SDKs powered by a global edge network and enterprise-grade infrastructure.
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ollama
Get up and running with Llama 3.3, DeepSeek-R1, Phi-4, Gemma 3, Mistral Small 3.1 and other large language models.
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transformers
🤗 Transformers: the model-definition framework for state-of-the-art machine learning models in text, vision, audio, and multimodal models, for both inference and training.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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LocalAI
:robot: The free, Open Source alternative to OpenAI, Claude and others. Self-hosted and local-first. Drop-in replacement for OpenAI, running on consumer-grade hardware. No GPU required. Runs gguf, transformers, diffusers and many more models architectures. Features: Generate Text, Audio, Video, Images, Voice Cloning, Distributed, P2P inference
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FLiPStackWeekly
FLaNK AI Weekly covering Apache NiFi, Apache Flink, Apache Kafka, Apache Spark, Apache Iceberg, Apache Ozone, Apache Pulsar, and more...
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litellm
Python SDK, Proxy Server (LLM Gateway) to call 100+ LLM APIs in OpenAI format - [Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic, Sagemaker, HuggingFace, Replicate, Groq]
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open_llama
OpenLLaMA, a permissively licensed open source reproduction of Meta AI’s LLaMA 7B trained on the RedPajama dataset
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OpenLLM
Run any open-source LLMs, such as DeepSeek and Llama, as OpenAI compatible API endpoint in the cloud.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better FastChat alternative or higher similarity.
FastChat discussion
FastChat reviews and mentions
Posts with mentions or reviews of FastChat.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-11-13.
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Qwen2.5-Coder-32B is an LLM that can code well that runs on my Mac
Hey, Simon! Have you considered to host private evals yourself? I think, with the weight of the community behind you, you could easily accumulate a bunch of really high-quality, "curated" data, if you will. That is to say, people would happily send it to you. More people should self-host stuff like https://github.com/lm-sys/FastChat without revealing their dataset, I think, and people would probably trust it much more than the public stuff, considering they already trust _you_ to some extent! So far the private eval scene is just a handful of guys on twitter reporting their findings in unsystematic manner, but a real grassroots approach backed up by a respectable influencer would go a long way to change that.
Food for thought.
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DoLa and MT-Bench - A Quick Eval of a new LLM trick
Made a change to (gen_model_answer.py)[https://github.com/lm-sys/FastChat/blob/main/fastchat/llm_judge/gen_model_answer.py] adding the dola_layers params
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MT-Bench: Comparing different LLM Judges
MT-Bench is a quick (and dirty?) way to evaluate a chatbot model (fine-tuned instruction following LLM). When a new open-source model is published at Hugging-face it is not uncommon to see the score presented as a testament of quality. It offers ~$5 worth of OpenAI API calls towards getting a good ballpark of how your model does. A good tool to iterate on fine-tuning an assistant model.
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GPT4.5 or GPT5 being tested on LMSYS?
gpt2-chatbot isn't the only "mystery model" on LMSYS. Another is "deluxe-chat".
When asked about it in October last year, LMSYS replied [0] "It is an experiment we are running currently. More details will be revealed later"
One distinguishing feature of "deluxe-chat": although it gives high quality answers, it is very slow, so slow that the arena displays a warning whenever it is invoked
[0] https://github.com/lm-sys/FastChat/issues/2527
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LLMs on your local Computer (Part 1)
FastChat
- FLaNK AI for 11 March 2024
- FLaNK 04 March 2024
- ChatGPT for Teams
- FastChat: An open platform for training and serving large language models
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LM Studio – Discover, download, and run local LLMs
How does it compare with something like FastChat? https://github.com/lm-sys/FastChat
Feature set seems like a decent amount of overlap. One limitation of FastChat, as far as I can tell, is that one is limited to the models that FastChat supports (though I think it would be minor to modify it to support arbitrary models?)
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A note from our sponsor - Stream
getstream.io | 10 Jul 2025
Stats
Basic FastChat repo stats
86
38,807
7.8
about 1 month ago
lm-sys/FastChat is an open source project licensed under Apache License 2.0 which is an OSI approved license.
The primary programming language of FastChat is Python.
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