Comparison
langfuse vs langwatch
Verdict
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; pick langwatch if langWatch is a self-hostable platform for evaluating large language models and testing AI agents, supporting TypeScript and Node.js.
Markdown twin · langfuse alternatives · langwatch alternatives
GraphCanon updated Sep 20, 2026
23views this month
vs
Trust & integrity
| Signal | langfuse | langwatch |
|---|---|---|
| Maintenance | Very active (0d since push) As of Sep 18, 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 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
- langfuse
- Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
- langwatch
- The platform for LLM evaluations and AI agent testing
Stars
- langfuse
- 35k
- langwatch
- 4.8k
Forks
- langfuse
- 3.8k
- langwatch
- 393
Open issues
- langfuse
- 906
- langwatch
- 1.0k
Language
- langfuse
- TypeScript
- langwatch
- TypeScript
Adopt for
- 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.
- langwatch
- LangWatch is a self-hostable platform for evaluating large language models and testing AI agents, supporting TypeScript and Node.js.
Persona
- langfuse
- -
- langwatch
- -
Runtime
- langfuse
- -
- langwatch
- -
License
- langfuse
- Other
- langwatch
- LangWatch is licensed under Apache-2.0, with enterprise modules needing a commercial license for production use.
Last pushed
- langfuse
- Sep 18, 2026
- langwatch
- Sep 18, 2026
Categories
- langfuse
- Evaluation & Observability
- langwatch
- AI Agents, Evaluation & Observability
Trust and health
Open issues (now)
- langfuse
- 906
- langwatch
- 1.0k
Stars delta
- langfuse
- +2.5k (30d)
- langwatch
- +1.3k (30d)
Open issues delta
- langfuse
- +197 (30d)
- langwatch
- +225 (30d)
OSV dependency advisories
- langfuse
- No lockfile (source not queried)
- langwatch
- Published findings
Full report
- langfuse
- Trust report
- langwatch
- Trust report
Typed relationship
langfuse alternative langwatchLangWatch and LangFuse both provide platforms for LLM evaluation, observability, and metrics.
Choose langfuse if…
- License: langfuse is Other, langwatch is Apache-2.0.
- LangWatch and LangFuse both provide platforms for LLM evaluation, observability, and metrics.
- Tags unique to langfuse: llm-observability, monitoring, open-source, prompt-engineering.
- 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.
Choose langwatch if…
- License: langwatch is Apache-2.0, langfuse is Other.
- Pricing: The core platform is free under Apache-2.0, but enterprise modules require a commercial license for production..
- Requirements: Only Node.js is required for running LangWatch. For production use, refer to the self-hosting documentation..
- LangWatch and LangFuse both provide platforms for LLM evaluation, observability, and metrics.
- Tags unique to langwatch: agent-testing, ai, datasets, gpt.
- Also covers AI Agents.
- When you need a self-hostable solution for evaluating large language models and testing AI agents, especially if you are comfortable with TypeScript and Node.js.
When NOT to use langwatch
- If you prefer a cloud-hosted solution or do not have the capability to self-host a platform.
- If your project strictly requires open-source licensing without any commercial components, as LangWatch's enterprise modules require a commercial license for production use.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- 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 (langwatch/langwatch) · observed Sep 20, 2026
- GitHub forks (langwatch/langwatch) · observed Sep 20, 2026
- Last push (langwatch/langwatch) · observed Sep 18, 2026
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Sep 18, 2026
- Trust scan (lockfile / OSV) · observed Sep 18, 2026
GitHub stars on cards: langfuse 35k · langwatch 4.8k (synced Sep 20, 2026).
Common questions
- What is the difference between langfuse and langwatch?
- langfuse: Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.. langwatch: The platform for LLM evaluations and AI agent testing. See the comparison table for live GitHub stats and shared categories.
- When should I choose langfuse over langwatch?
- Choose langfuse over langwatch when License: langfuse is Other, langwatch is Apache-2.0; LangWatch and LangFuse both provide platforms for LLM evaluation, observability, and metrics; Tags unique to langfuse: llm-observability, monitoring, open-source, prompt-engineering; 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 choose langwatch over langfuse?
- Choose langwatch over langfuse when License: langwatch is Apache-2.0, langfuse is Other; Pricing: The core platform is free under Apache-2.0, but enterprise modules require a commercial license for production.; Requirements: Only Node.js is required for running LangWatch. For production use, refer to the self-hosting documentation.; LangWatch and LangFuse both provide platforms for LLM evaluation, observability, and metrics; Tags unique to langwatch: agent-testing, ai, datasets, gpt; Also covers AI Agents; When you need a self-hostable solution for evaluating large language models and testing AI agents, especially if you are comfortable with TypeScript and Node.js.
- 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. - When should I avoid langwatch?
- If you prefer a cloud-hosted solution or do not have the capability to self-host a platform. If your project strictly requires open-source licensing without any commercial components, as LangWatch's enterprise modules require a commercial license for production use.
- Is langfuse or langwatch more popular on GitHub?
- langfuse has more GitHub stars (34,763 vs 4,814). Stars measure visibility, not whether either tool fits your constraints.
- Are langfuse and langwatch open source?
- Yes - both are open-source projects on GitHub (langfuse: Other, langwatch: Apache-2.0).
- Where can I find alternatives to langfuse or langwatch?
- GraphCanon lists graph-backed alternatives at langfuse alternatives and langwatch alternatives (langfuse markdown twin, langwatch 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, langfuse or langwatch?
- langfuse: Very active. langwatch: 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 langfuse and langwatch?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: langfuse trust report; langwatch trust report.