Langtrace vs Weights & Biases Weave

Pick two tools from the same category to compare side-by-side.

	Langtrace Open-source, OpenTelemetry-based end-to-end observability tool for LLM applications.	Weights & Biases Weave LLM tracing and evaluation toolkit from Weights & Biases for developing generative AI applications.
Category	observability	observability
Vendor type	open source	hybrid
Pricing	freemium	freemium
Strengths	+ OpenTelemetry-native traces avoid vendor lock-in + Open-source SDKs and dashboard, self-hostable + Python and TypeScript support with framework and vectorDB integrations + Free tier for individual developers	+ Minimal instrumentation via the weave.op decorator + Evaluation framework for structured, comparative LLM assessments + Integrates with the broader Weights & Biases ML experiment platform + Apache-2.0 licensed client SDK
Tradeoffs	− Smaller ecosystem than larger commercial platforms − Free tier capped at 5k spans per month	− Tied to a W&B account and backend rather than a standalone self-hosted store − TypeScript SDK is less mature than the Python SDK
Used in stacks	0	0