Home/Compare/jan vs MOSS

Comparison

jan vs MOSS

Verdict

Pick jan if jan is an open-source, self-hosted chatbot application that supports offline operation and is built using TypeScript; pick MOSS if mOSS is an open-source conversational language model from Fudan University that supports bilingual dialogue and tool invocation. It offers various models, dialogue data, deployment, and fine-tuning code.

Markdown twin · jan alternatives · MOSS alternatives

GraphCanon updated Sep 20, 2026

18views this month

jan logo

jan

janhq/jan

★ 45kpushed Sep 18, 2026
vs
MOSS logo

MOSS

OpenMOSS/MOSS

★ 12kpushed Sep 6, 2026

Trust & integrity

SignaljanMOSS
Maintenance
Very active (0d since push)
As of Sep 18, 2026 · github_public_v1
Active (12d since push)
As of Sep 18, 2026 · github_public_v1
Provenance
Not a fork · Organization account
As of Sep 18, 2026 · github_public_v1
Not a fork · Organization account
As of Sep 18, 2026 · github_public_v1
OSV dependency advisories
No lockfile (source not queried)
As of Sep 18, 2026 · osv@v1
Published findings
As of Sep 18, 2026 · osv@v1
deps.dev advisories
Not queried
deps.dev@v1
Not queried
deps.dev@v1
OpenSSF Scorecard
Not queried
openssf-scorecard@v1
Not queried
openssf-scorecard@v1

Tagline

jan
Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.
MOSS
An open-source, tool-augmented conversational language model from Fudan University

Stars

jan
45k
MOSS
12k

Forks

jan
3.0k
MOSS
1.1k

Open issues

jan
530
MOSS
243

Language

jan
TypeScript
MOSS
Python

Adopt for

jan
Jan is an open-source, self-hosted chatbot application that supports offline operation and is built using TypeScript.
MOSS
MOSS is an open-source conversational language model from Fudan University that supports bilingual dialogue and tool invocation. It offers various models, dialogue data, deployment, and fine-tuning code.

Persona

jan
-
MOSS
-

Runtime

jan
-
MOSS
-

License

jan
Jan is licensed under the Apache 2.0 license, which allows for free use, modification, and distribution of the software.
MOSS
Apache-2.0

Last pushed

jan
Sep 18, 2026
MOSS
Sep 6, 2026

Categories

jan
AI Agents
MOSS
Inference & Serving, LLM Frameworks, Model Training

Trust and health

Maintenance

jan
Very active (96%)
MOSS
Active (82%)

Days since push

jan
0d
MOSS
12d

Open issues (now)

jan
530
MOSS
243

Stars delta

jan
+498 (30d)
MOSS
+39 (30d)

Open issues delta

jan
+77 (30d)
MOSS
0 (30d)

OSV dependency advisories

jan
No lockfile (source not queried)
MOSS
Published findings

Full report

Typed relationship

jan alternative MOSSBoth MOSS and Jan are open-source conversational language models designed to interact with users in a natural way, addressing similar needs but developed independently.

Choose jan if…

  • jan is primarily TypeScript; MOSS is Python.
  • License: jan is Other, MOSS is Apache-2.0.
  • Requirements: Min 8 GB RAM; For macOS, 8GB RAM is required for 3B models, 16GB for 7B models, and 32GB for 13B models.; Windows users need version 10 or higher with GPU support for NVIDIA, AMD, or Intel Arc.; Linux users can run Jan on most distributions, with GPU acceleration available..
  • Both MOSS and Jan are open-source conversational language models designed to interact with users in a natural way, addressing similar needs but developed independently.
  • Tags unique to jan: gpt, llamacpp, llm, localai.
  • Also covers AI Agents.
  • Use Jan when you need a self-hosted chatbot solution that can operate entirely offline on your local machine.

When NOT to use jan

  • Do not use Jan if you require a cloud-based chatbot service with real-time updates and maintenance.
  • Avoid Jan if your system does not meet the minimum hardware requirements, such as 8GB RAM for smaller models and up to 32GB for larger models.
  • Jan may not be the best choice if you need a chatbot with extensive pre-trained models or continuous learning capabilities, as it operates offline and does not have access to the latest updates.

Choose MOSS if…

  • MOSS is primarily Python; jan is TypeScript.
  • License: MOSS is Apache-2.0, jan is Other.
  • Both MOSS and Jan are open-source conversational language models designed to interact with users in a natural way, addressing similar needs but developed independently.
  • Tags unique to MOSS: deep-learning, dialogue-systems, large-language-models, natural language processing.
  • Also covers Inference & Serving, LLM Frameworks, Model Training.
  • Use MOSS when you need a conversational language model that supports both Chinese and English dialogue.

When NOT to use MOSS

  • Avoid MOSS if your project requires a model that is not open-source or if you prefer proprietary solutions.
  • Do not use MOSS if your application does not require support for tool invocation or if you need a model that is not bilingual.
  • If your project has strict hardware limitations and cannot meet the minimum requirements for running MOSS, such as the need for at least 12GB of GPU memory for the 4-bit quantized version, consider a

Explore

Sources

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

GitHub stars on cards: jan 45k · MOSS 12k (synced Sep 20, 2026).

Common questions

What is the difference between jan and MOSS?
jan: Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.. MOSS: An open-source, tool-augmented conversational language model from Fudan University. See the comparison table for live GitHub stats and shared categories.
When should I choose jan over MOSS?
Choose jan over MOSS when jan is primarily TypeScript; MOSS is Python; License: jan is Other, MOSS is Apache-2.0; Requirements: Min 8 GB RAM; For macOS, 8GB RAM is required for 3B models, 16GB for 7B models, and 32GB for 13B models.; Windows users need version 10 or higher with GPU support for NVIDIA, AMD, or Intel Arc.; Linux users can run Jan on most distributions, with GPU acceleration available.; Both MOSS and Jan are open-source conversational language models designed to interact with users in a natural way, addressing similar needs but developed independently; Tags unique to jan: gpt, llamacpp, llm, localai; Also covers AI Agents; Use Jan when you need a self-hosted chatbot solution that can operate entirely offline on your local machine.
When should I choose MOSS over jan?
Choose MOSS over jan when MOSS is primarily Python; jan is TypeScript; License: MOSS is Apache-2.0, jan is Other; Both MOSS and Jan are open-source conversational language models designed to interact with users in a natural way, addressing similar needs but developed independently; Tags unique to MOSS: deep-learning, dialogue-systems, large-language-models, natural language processing; Also covers Inference & Serving, LLM Frameworks, Model Training; Use MOSS when you need a conversational language model that supports both Chinese and English dialogue.
When should I avoid jan?
Do not use Jan if you require a cloud-based chatbot service with real-time updates and maintenance. Avoid Jan if your system does not meet the minimum hardware requirements, such as 8GB RAM for smaller models and up to 32GB for larger models. Jan may not be the best choice if you need a chatbot with extensive pre-trained models or continuous learning capabilities, as it operates offline and does not have access to the latest updates.
When should I avoid MOSS?
Avoid MOSS if your project requires a model that is not open-source or if you prefer proprietary solutions. Do not use MOSS if your application does not require support for tool invocation or if you need a model that is not bilingual. If your project has strict hardware limitations and cannot meet the minimum requirements for running MOSS, such as the need for at least 12GB of GPU memory for the 4-bit quantized version, consider a
Is jan or MOSS more popular on GitHub?
jan has more GitHub stars (44,518 vs 12,253). Stars measure visibility, not whether either tool fits your constraints.
Are jan and MOSS open source?
Yes - both are open-source projects on GitHub (jan: Other, MOSS: Apache-2.0).
Where can I find alternatives to jan or MOSS?
GraphCanon lists graph-backed alternatives at jan alternatives and MOSS alternatives (jan markdown twin, MOSS 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, jan or MOSS?
jan: Very active. MOSS: Active. 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 jan and MOSS?
GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: jan trust report; MOSS trust report.

Was this helpful?

Anonymous feedback helps us improve pages and translations.