Comparison
FastChat vs FeatherCNN
Verdict
Pick FastChat when fastChat is primarily Python; FeatherCNN is C++; pick FeatherCNN when featherCNN is primarily C++; FastChat is Python.
Markdown twin · FastChat alternatives · FeatherCNN alternatives
GraphCanon updated today
vs
Trust & integrity
| Signal | FastChat | FeatherCNN |
|---|---|---|
| Maintenance | Steady (71d since push) As of today · github_public_v1 | Dormant (2482d 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
- FeatherCNN
- FeatherCNN is a high performance inference engine for convolutional neural networks.
Stars
- FastChat
- 39k
- FeatherCNN
- 1.2k
Forks
- FastChat
- 4.8k
- FeatherCNN
- 275
Open issues
- FastChat
- 1.0k
- FeatherCNN
- 20
Language
- FastChat
- Python
- FeatherCNN
- C++
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
- FeatherCNN
- -
Persona
- FastChat
- -
- FeatherCNN
- -
Runtime
- FastChat
- -
- FeatherCNN
- -
License
- FastChat
- Apache-2.0
- FeatherCNN
- -
Last pushed
- FastChat
- May 1, 2026
- FeatherCNN
- Sep 24, 2019
Categories
- FastChat
- Model Training, LLM Frameworks, Evaluation & Observability, Inference & Serving
- FeatherCNN
- Evaluation & Observability, Inference & Serving, Computer Vision
Trust and health
Maintenance
- FastChat
- Steady (60%)
- FeatherCNN
- Dormant (18%)
Days since push
- FastChat
- 71d
- FeatherCNN
- 2482d
Open issues (now)
- FastChat
- 1.0k
- FeatherCNN
- 20
Full report
- FastChat
- Trust report
- FeatherCNN
- Trust report
Choose FastChat if…
- FastChat is primarily Python; FeatherCNN is C++.
- Tags unique to FastChat: evaluation system, large-language-models, chatbots, distributed serving.
- Also covers Model Training, LLM Frameworks.
- - 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 FeatherCNN if…
- FeatherCNN is primarily C++; FastChat is Python.
- Tags unique to FeatherCNN: android, arm-neon, c, inference-engine.
- Also covers Computer Vision.
When NOT to use FeatherCNN
- Last GitHub push was 2482 days ago (dormant maintenance, Sep 24, 2019). Validate activity before betting a new project on FeatherCNN.
- Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers.
- 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 (Tencent/FeatherCNN) · observed Jul 11, 2026
- GitHub forks (Tencent/FeatherCNN) · observed Jul 11, 2026
- Last push (Tencent/FeatherCNN) · observed Sep 24, 2019
- License file (unknown) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: FastChat 39k · FeatherCNN 1.2k (synced Jul 11, 2026).
Common questions
- What is the difference between FastChat and FeatherCNN?
- FastChat: An open platform for training, serving, and evaluating large language models. FeatherCNN: FeatherCNN is a high performance inference engine for convolutional neural networks.. See the comparison table for live GitHub stats and shared categories.
- When should I choose FastChat over FeatherCNN?
- Choose FastChat over FeatherCNN when FastChat is primarily Python; FeatherCNN is C++; Tags unique to FastChat: evaluation system, large-language-models, chatbots, distributed serving; Also covers Model Training, LLM Frameworks; - You are looking to train and evaluate state-of-the-art models such as Vicuna or MT-Bench.
- When should I choose FeatherCNN over FastChat?
- Choose FeatherCNN over FastChat when FeatherCNN is primarily C++; FastChat is Python; Tags unique to FeatherCNN: android, arm-neon, c, inference-engine; 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 FeatherCNN?
- Last GitHub push was 2482 days ago (dormant maintenance, Sep 24, 2019). Validate activity before betting a new project on FeatherCNN. Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
- Is FastChat or FeatherCNN more popular on GitHub?
- FastChat has more GitHub stars (39,490 vs 1,228). Stars measure visibility, not whether either tool fits your constraints.
- Are FastChat and FeatherCNN open source?
- Yes - both are open-source projects on GitHub.
- Where can I find alternatives to FastChat or FeatherCNN?
- GraphCanon lists graph-backed alternatives at FastChat alternatives and FeatherCNN alternatives (FastChat markdown twin, FeatherCNN 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 FeatherCNN?
- FastChat: Steady. FeatherCNN: Dormant. 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 FeatherCNN?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: FastChat trust report; FeatherCNN trust report.