Comparison
FastChat vs x-stable-diffusion
Verdict
Pick FastChat when fastChat is primarily Python; x-stable-diffusion is Jupyter Notebook; pick x-stable-diffusion when x-stable-diffusion is primarily Jupyter Notebook; FastChat is Python.
Markdown twin · FastChat alternatives · x-stable-diffusion alternatives
GraphCanon updated today
vs
Trust & integrity
| Signal | FastChat | x-stable-diffusion |
|---|---|---|
| Maintenance | Steady (71d since push) As of today · github_public_v1 | Archived (950d since push) As of today · github_public_v1 |
| Provenance | Not a fork · Organization account As of today · github_public_v1 | Not a fork · Organization account As of today · github_public_v1 |
| Security (OSV) | No lockfile As of today · none | No lockfile As of today · none |
Tagline
- FastChat
- An open platform for training, serving, and evaluating large language models
- x-stable-diffusion
- Real-time inference for Stable Diffusion - 0.88s latency. Covers AITemplate, nvFuser, TensorRT, FlashAttention. Join our Discord communty: https://discord.com/invite/TgHXuSJEk6
Stars
- FastChat
- 39k
- x-stable-diffusion
- 557
Forks
- FastChat
- 4.8k
- x-stable-diffusion
- 34
Open issues
- FastChat
- 1.0k
- x-stable-diffusion
- 22
Language
- FastChat
- Python
- x-stable-diffusion
- Jupyter Notebook
Adopt for
- FastChat
- FastChat is a comprehensive open platform for managing large language models (LLMs) that includes capabilities for training, serving, evaluating, and comparing chatbot models via web UIs and RESTful APIs. It powers ChatB
- x-stable-diffusion
- -
Persona
- FastChat
- -
- x-stable-diffusion
- -
Runtime
- FastChat
- -
- x-stable-diffusion
- -
License
- FastChat
- Apache-2.0
- x-stable-diffusion
- Apache-2.0
Last pushed
- FastChat
- May 1, 2026
- x-stable-diffusion
- Dec 4, 2023
Categories
- FastChat
- LLM Frameworks, Model Training, Inference & Serving, Evaluation & Observability
- x-stable-diffusion
- Model Training, Inference & Serving, Computer Vision
Trust and health
Maintenance
- FastChat
- Steady (60%)
- x-stable-diffusion
- Archived (8%)
Days since push
- FastChat
- 71d
- x-stable-diffusion
- 950d
Archived on GitHub
- FastChat
- No
- x-stable-diffusion
- Yes
Open issues (now)
- FastChat
- 1.0k
- x-stable-diffusion
- 22
Full report
- FastChat
- Trust report
- x-stable-diffusion
- Trust report
Choose FastChat if…
- FastChat is primarily Python; x-stable-diffusion is Jupyter Notebook.
- Tags unique to FastChat: evaluation system, large-language-models, chatbots, distributed serving.
- Also covers LLM Frameworks, Evaluation & Observability.
- - You are looking to train and evaluate state-of-the-art models such as Vicuna or MT-Bench.
When NOT to use FastChat
- - You require a proprietary or closed-source framework; FastChat is open-source under Apache-2.0 license and its use might be unsuitable for environments requiring proprietary solutions.
- - Your chatbot evaluation needs do not align with the types of data used in FastChat's datasets (e.g., human votes, MT-Bench evaluations).
- - You prefer a more user-friendly setup without the need to clone a repository and manually install dependencies; FastChat requires installation from source with additional steps for Rust and CMake on
- + Mac.
Choose x-stable-diffusion if…
- x-stable-diffusion is primarily Jupyter Notebook; FastChat is Python.
- Tags unique to x-stable-diffusion: aitemplate, automl, nvfuser, cuda.
- Also covers Computer Vision.
When NOT to use x-stable-diffusion
- x-stable-diffusion is archived on GitHub. Prefer an active alternative unless you maintain a private fork or need a frozen dependency.
- Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge.
- Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (lm-sys/FastChat) · observed Jul 11, 2026
- GitHub forks (lm-sys/FastChat) · observed Jul 11, 2026
- Last push (lm-sys/FastChat) · observed May 1, 2026
- License file (Apache-2.0) · observed Jul 11, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (stochasticai/x-stable-diffusion) · observed Jul 11, 2026
- GitHub forks (stochasticai/x-stable-diffusion) · observed Jul 11, 2026
- Last push (stochasticai/x-stable-diffusion) · observed Dec 4, 2023
- License file (Apache-2.0) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: FastChat 39k · x-stable-diffusion 557 (synced Jul 11, 2026).
Common questions
- What is the difference between FastChat and x-stable-diffusion?
- FastChat: An open platform for training, serving, and evaluating large language models. x-stable-diffusion: Real-time inference for Stable Diffusion - 0.88s latency. Covers AITemplate, nvFuser, TensorRT, FlashAttention. Join our Discord communty: https://discord.com/invite/TgHXuSJEk6. See the comparison table for live GitHub stats and shared categories.
- When should I choose FastChat over x-stable-diffusion?
- Choose FastChat over x-stable-diffusion when FastChat is primarily Python; x-stable-diffusion is Jupyter Notebook; Tags unique to FastChat: evaluation system, large-language-models, chatbots, distributed serving; Also covers LLM Frameworks, Evaluation & Observability; - You are looking to train and evaluate state-of-the-art models such as Vicuna or MT-Bench.
- When should I choose x-stable-diffusion over FastChat?
- Choose x-stable-diffusion over FastChat when x-stable-diffusion is primarily Jupyter Notebook; FastChat is Python; Tags unique to x-stable-diffusion: aitemplate, automl, nvfuser, cuda; Also covers Computer Vision.
- When should I avoid FastChat?
- - You require a proprietary or closed-source framework; FastChat is open-source under Apache-2.0 license and its use might be unsuitable for environments requiring proprietary solutions. - Your chatbot evaluation needs do not align with the types of data used in FastChat's datasets (e.g., human votes, MT-Bench evaluations). - You prefer a more user-friendly setup without the need to clone a repository and manually install dependencies; FastChat requires installation from source with additional steps for Rust and CMake on + Mac.
- When should I avoid x-stable-diffusion?
- x-stable-diffusion is archived on GitHub. Prefer an active alternative unless you maintain a private fork or need a frozen dependency. Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
- Is FastChat or x-stable-diffusion more popular on GitHub?
- FastChat has more GitHub stars (39,490 vs 557). Stars measure visibility, not whether either tool fits your constraints.
- Are FastChat and x-stable-diffusion open source?
- Yes - both are open-source projects on GitHub (FastChat: Apache-2.0, x-stable-diffusion: Apache-2.0).
- Where can I find alternatives to FastChat or x-stable-diffusion?
- GraphCanon lists graph-backed alternatives at FastChat alternatives and x-stable-diffusion alternatives (FastChat markdown twin, x-stable-diffusion markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, FastChat or x-stable-diffusion?
- FastChat: Steady. x-stable-diffusion: Archived. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for FastChat and x-stable-diffusion?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: FastChat trust report; x-stable-diffusion trust report.