Comparison
litmus vs langfuse
Verdict
Pick litmus if litmus is an extensive GenAI application development platform for testing and evaluating LLM performance, featuring a user-friendly UI and deployment flexibility via CLI or manual setup; pick langfuse if langfuse is an open-source platform for evaluating and monitoring large language model applications, offering self-hosting options for local, VM, and Kubernetes environments.
Markdown twin · litmus alternatives · langfuse alternatives
GraphCanon updated Sep 20, 2026
Trust & integrity
| Signal | litmus | langfuse |
|---|---|---|
| Maintenance | Slowing (164d since push) As of Sep 10, 2026 · github_public_v1 | Very active (0d since push) As of Sep 18, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 10, 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 Jul 15, 2026 · osv@v1 | No lockfile (source not queried) 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
- litmus
- A comprehensive LLM testing and evaluation tool for GenAI application development with user-friendly UI
- langfuse
- Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
Stars
- litmus
- 52
- langfuse
- 35k
Forks
- litmus
- 9
- langfuse
- 3.8k
Open issues
- litmus
- 5
- langfuse
- 906
Language
- litmus
- Vue
- langfuse
- TypeScript
Adopt for
- litmus
- Litmus is an extensive GenAI application development platform for testing and evaluating LLM performance, featuring a user-friendly UI and deployment flexibility via CLI or manual setup.
- langfuse
- Langfuse is an open-source platform for evaluating and monitoring large language model applications, offering self-hosting options for local, VM, and Kubernetes environments.
Persona
- litmus
- -
- langfuse
- -
Runtime
- litmus
- -
- langfuse
- -
License
- litmus
- Apache-2.0
- langfuse
- Other
Last pushed
- litmus
- Mar 29, 2026
- langfuse
- Sep 18, 2026
Categories
- litmus
- Evaluation & Observability, Model Training
- langfuse
- Evaluation & Observability
Trust and health
Maintenance
- litmus
- Slowing (36%)
- langfuse
- Very active (96%)
Days since push
- litmus
- 164d
- langfuse
- 0d
Open issues (now)
- litmus
- 5
- langfuse
- 906
Stars delta
- litmus
- +1 (30d)
- langfuse
- +2.5k (30d)
Open issues delta
- litmus
- 0 (30d)
- langfuse
- +197 (30d)
Full report
- litmus
- Trust report
- langfuse
- Trust report
Choose litmus if…
- litmus is primarily Vue; langfuse is TypeScript.
- License: litmus is Apache-2.0, langfuse is Other.
- Tags unique to litmus: api, apitesting, cicd, devops.
- Also covers Model Training.
- When deploying on Google Cloud with the need for CLI ease of use
When NOT to use litmus
- In environments not using Google Cloud services and APIs
- When manual setup for each component outweighs potential benefits of automation provided by Litmus CLI
Choose langfuse if…
- langfuse is primarily TypeScript; litmus is Vue.
- License: langfuse is Other, litmus is Apache-2.0.
- Tags unique to langfuse: analytics, evaluation, llm-observability, monitoring.
- langfuse ships Docker support for self-hosted deployment.
- When you need a self-hosted solution for evaluating and monitoring large language model applications, as Langfuse supports local, VM, and Kubernetes environments.
When NOT to use langfuse
- If you are looking for a fully managed service without the need for self-hosting, as Langfuse requires setting up and maintaining the infrastructure yourself.
- When you need enterprise features that are not covered by the open-source version, as the `ee` folders are not open-source and may require additional licensing or services.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (google/litmus) · observed Sep 20, 2026
- GitHub forks (google/litmus) · observed Sep 20, 2026
- Last push (google/litmus) · observed Mar 29, 2026
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (langfuse/langfuse) · observed Sep 20, 2026
- GitHub forks (langfuse/langfuse) · observed Sep 20, 2026
- Last push (langfuse/langfuse) · observed Sep 18, 2026
- License file (Other) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Sep 18, 2026
- Trust scan (lockfile / OSV) · observed Sep 18, 2026
GitHub stars on cards: litmus 52 · langfuse 35k (synced Sep 20, 2026).
Common questions
- What is the difference between litmus and langfuse?
- litmus: A comprehensive LLM testing and evaluation tool for GenAI application development with user-friendly UI. langfuse: Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.. See the comparison table for live GitHub stats and shared categories.
- When should I choose litmus over langfuse?
- Choose litmus over langfuse when litmus is primarily Vue; langfuse is TypeScript; License: litmus is Apache-2.0, langfuse is Other; Tags unique to litmus: api, apitesting, cicd, devops; Also covers Model Training; When deploying on Google Cloud with the need for CLI ease of use.
- When should I choose langfuse over litmus?
- Choose langfuse over litmus when langfuse is primarily TypeScript; litmus is Vue; License: langfuse is Other, litmus is Apache-2.0; Tags unique to langfuse: analytics, evaluation, llm-observability, monitoring; langfuse ships Docker support for self-hosted deployment; When you need a self-hosted solution for evaluating and monitoring large language model applications, as Langfuse supports local, VM, and Kubernetes environments.
- When should I avoid litmus?
- In environments not using Google Cloud services and APIs When manual setup for each component outweighs potential benefits of automation provided by Litmus CLI
- When should I avoid langfuse?
- If you are looking for a fully managed service without the need for self-hosting, as Langfuse requires setting up and maintaining the infrastructure yourself. When you need enterprise features that are not covered by the open-source version, as the
eefolders are not open-source and may require additional licensing or services. - Is litmus or langfuse more popular on GitHub?
- langfuse has more GitHub stars (34,763 vs 52). Stars measure visibility, not whether either tool fits your constraints.
- Are litmus and langfuse open source?
- Yes - both are open-source projects on GitHub (litmus: Apache-2.0, langfuse: Other).
- Where can I find alternatives to litmus or langfuse?
- GraphCanon lists graph-backed alternatives at litmus alternatives and langfuse alternatives (litmus markdown twin, langfuse 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, litmus or langfuse?
- litmus: Slowing. langfuse: Very 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 litmus and langfuse?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: litmus trust report; langfuse trust report.