langfuse
Langfusegithub.com/langfuse/langfuse
🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
Updated 6 h ago · first seen 11 Sept 2026
framework_01M294P9FFR7PWMD9ZK558AGNX
- Version
- 4.35.0
- T2 · 6 h ago
- Released
- 11 Sept 2026
- T2 · 6 h ago
- Stars
- 34,482
- T2 · 6 h ago
Specification
- Repository
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Created at
- 18 May 2023
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Default branch
- main
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Homepage
- https://langfuse.com
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Kind
- tool
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Latest release
- 11 Sept 2026
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Latest release tag
- v4.35.0
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Latest version
- 4.35.0
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- License name
- Other
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Forks
- 3,757
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Releases
- 681
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Stars
- 34,482
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Tags
- 691
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Watchers
- 112
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- PyPI
- langfuse
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Readme url
- https://raw.githubusercontent.com/langfuse/langfuse/HEAD/README.md
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Releases url
- https://github.com/langfuse/langfuse/releases
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
- Topics
- analytics, autogen, evaluation, langchain, large-language-models, llama-index, llm, llm-evaluation, llm-observability, llmops, monitoring, observability, open-source, openai, playground, prompt-engineering, prompt-management, self-hosted, ycombinator
Source:GitHub public repositories (HTML, releases.atom, raw files)T2observed 6 h agomedium
Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →
Provenance
Attributed facts
19
Source tiers
T219
Freshest observation
6 h ago
Conflicts
None
- Developed by
- Langfuse
As of
Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.
Claim history
Repositoryrepository_url1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| https://github.com/langfuse/langfuse | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Created atcreated_at1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 18 May 2023 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Default branchdefault_branch1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| main | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Descriptiondescription1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform. | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Homepagehomepage1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| https://langfuse.com | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Kindkind1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| tool | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Latest releaselatest_release_at1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 11 Sept 2026 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Latest release taglatest_release_tag1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| v4.35.0 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Latest versionlatest_version1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 4.35.0 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
License namelicense_name1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| Other | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Forksmetric.forks1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 3,757 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Releasesmetric.releases1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 681 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Starsmetric.stars1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 34,482 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Watchersmetric.watchers1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| 112 | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
PyPIpypi1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| langfuse | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Readme urlreadme_url1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| https://raw.githubusercontent.com/langfuse/langfuse/HEAD/README.md | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Releases urlreleases_url1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| https://github.com/langfuse/langfuse/releases | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Topicstopics1
| Value | Valid from → to | Status | Source | Confidence | Extractor |
|---|---|---|---|---|---|
| analytics, autogen, evaluation, langchain, large-language-models, llama-index, llm, llm-evaluation, llm-observability, llmops, monitoring, observability, open-source, openai, playground, prompt-engineering, prompt-management, self-hosted, ycombinator | → current | current | GitHub public repositories (HTML, releases.atom, raw files)T2 | medium | deterministic |
Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
| Source | Document | Type | Tier | Last observed | Snapshots |
|---|---|---|---|---|---|
| GitHub public repositories (HTML, releases.atom, raw files) | github.com/langfuse/langfuse/releases.atom | feed | T2· Quality secondary | 6 h ago | 1 |
| GitHub public repositories (HTML, releases.atom, raw files) | raw.githubusercontent.com/langfuse/langfuse/HEAD/README.md | readme | T2· Quality secondary | 6 h ago | 1 |
| GitHub public repositories (HTML, releases.atom, raw files) | github.com/langfuse/langfuse | repository | T2· Quality secondary | 6 h ago | 2 |
Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.