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Comparison

FastChat vs Forward

Verdict

Pick FastChat when fastChat is primarily Python; Forward is C++; pick Forward when forward is primarily C++; FastChat is Python.

Markdown twin · FastChat alternatives · Forward alternatives

GraphCanon updated today

FastChat logo

FastChat

lm-sys/FastChat

★ 39kpushed May 1, 2026
vs
Forward logo

Forward

Tencent/Forward

★ 556pushed Jan 29, 2022

Trust & integrity

SignalFastChatForward
Maintenance
Steady (71d since push)
As of today · github_public_v1
Dormant (1624d 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
FastChat trust reportForward trust reportTrust methodology

Tagline

FastChat
An open platform for training, serving, and evaluating large language models
Forward
A library for high performance deep learning inference on NVIDIA GPUs.

Stars

FastChat
39k
Forward
556

Forks

FastChat
4.8k
Forward
62

Open issues

FastChat
1.0k
Forward
0

Language

FastChat
Python
Forward
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
Forward
-

Persona

FastChat
-
Forward
-

Runtime

FastChat
-
Forward
-

License

FastChat
Apache-2.0
Forward
Other

Last pushed

FastChat
May 1, 2026
Forward
Jan 29, 2022

Categories

FastChat
Model Training, LLM Frameworks, Evaluation & Observability, Inference & Serving
Forward
Model Training, Inference & Serving

Trust and health

Maintenance

FastChat
Steady (60%)
Forward
Dormant (18%)

Days since push

FastChat
71d
Forward
1624d

Open issues (now)

FastChat
1.0k
Forward
0

Full report

FastChat
Trust report
Forward
Trust report

Shared compatibility

  • Python · FastChat: Python runtime · Forward: Python runtime

Choose FastChat if…

  • FastChat is primarily Python; Forward is C++.
  • License: FastChat is Apache-2.0, Forward is Other.
  • 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.
GitHubDetails

Choose Forward if…

  • Forward is primarily C++; FastChat is Python.
  • License: Forward is Other, FastChat is Apache-2.0.
  • Tags unique to Forward: deep-learning, gpu, forward, neural-network.

When NOT to use Forward

  • Last GitHub push was 1624 days ago (dormant maintenance, Jan 29, 2022). Validate activity before betting a new project on Forward.
  • 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.
GitHubDetails

Explore

FastChat trust report →Forward trust report →Model Training category →LLM Frameworks category →Evaluation & Observability category →Inference & Serving category →All comparisonsStack workflowsTrending tools

Sources

Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.

GitHub stars on cards: FastChat 39k · Forward 556 (synced Jul 11, 2026).

Common questions

What is the difference between FastChat and Forward?
FastChat: An open platform for training, serving, and evaluating large language models. Forward: A library for high performance deep learning inference on NVIDIA GPUs.. See the comparison table for live GitHub stats and shared categories.
When should I choose FastChat over Forward?
Choose FastChat over Forward when FastChat is primarily Python; Forward is C++; License: FastChat is Apache-2.0, Forward is Other; 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 Forward over FastChat?
Choose Forward over FastChat when Forward is primarily C++; FastChat is Python; License: Forward is Other, FastChat is Apache-2.0; Tags unique to Forward: deep-learning, gpu, forward, neural-network.
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 Forward?
Last GitHub push was 1624 days ago (dormant maintenance, Jan 29, 2022). Validate activity before betting a new project on Forward. 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 Forward more popular on GitHub?
FastChat has more GitHub stars (39,490 vs 556). Stars measure visibility, not whether either tool fits your constraints.
Are FastChat and Forward open source?
Yes - both are open-source projects on GitHub (FastChat: Apache-2.0, Forward: Other).
Where can I find alternatives to FastChat or Forward?
GraphCanon lists graph-backed alternatives at FastChat alternatives and Forward alternatives (FastChat markdown twin, Forward 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 Forward?
FastChat: Steady. Forward: 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 Forward?
GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: FastChat trust report; Forward trust report.