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langtrace

Scale3-Labs/langtrace

Open Telemetry based observability tool for LLM applications

GitHub Website

GraphCanon updated 4w · GitHub synced 4w

1.2k stars124 forksLast push 9mo TypeScript AGPL-3.0

Decision brief

Langtrace stands out as an open-source observability solution for large language models, offering real-time tracing and evaluation capabilities through the Open Telemetry framework.

Good fit when

When developing or using LLMs and frameworks where end-to-end visibility into every aspect of model performance is crucial.
If your application involves vector databases alongside LLMs, Langtrace provides integrated observability which can help in evaluating how these data stores impact the overall system.

Avoid when

For teams that do not require real-time tracing and evaluations, as implementing Langtrace might introduce unnecessary overhead.
When working with non-LLM AI applications or other machine learning models, Langtrace’s specialized features for large language models may not provide much value.

Observed Jul 12, 2026 · Source: enrich:decision_facts

langtrace alternatives Trust report

langtrace vs langfuse langtrace vs evidently langtrace vs phoenix

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Maintenance and security

Full trust report

Maintenance: Slowing (245d since push); As of 4w
Provenance: Not a fork · Organization account; As of 4w
Security (OSV): No lockfile; As of 1mo

Public GitHub metadata and optional OSV scans. Signals, not a guarantee. Trust methodology.

Install

npm install langtrace

npm

How it fits your stack(9)

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Evidence and technical details

Sourced facts, taxonomy, compatibility claims, README excerpt, and machine-readable endpoints.

Overview

Langtrace is an open-source observability tool designed to provide real-time tracing, evaluations, and metrics for large language models (LLMs) and their frameworks.

Capability facts

Deploy: Self-host
Source: dockerfile:Dockerfile · Jul 21, 2026
Docker: Dockerfile present
Source: dockerfile:Dockerfile · Jul 21, 2026
CLI: CLI entrypoint
Source: package.json:bin|scripts · Jul 21, 2026
MCP server: No MCP server detected
Source: repo_scan · Jul 21, 2026
Languages: typescript, javascript
Source: github.language+package.json · Jul 21, 2026

Graph entities

LangChainframework

README

📜 License

Langtrace application(this repository) is licensed under the AGPL 3.0 License. You can read about this license here.
Langtrace SDKs are licensed under the Apache 2.0 License. You can read about this license here.

For agents

This page has a .md twin and JSON over the API.

/tools/scale3-labs-langtrace.md GET /api/graphcanon/tools/scale3-labs-langtrace GET /api/graphcanon/graph?tool=scale3-labs-langtrace