langwatch vs open-webui
A neutral, constraint-first comparison - live GitHub stats and typed relationships, not marketing.
| langwatch | open-webui | |
|---|---|---|
| Tagline | The platform for LLM evaluations and AI agent testing | User-friendly AI Interface (Supports Ollama, OpenAI API, ...) |
| Stars | 3.3k | 145k |
| Forks | 327 | 21k |
| Open issues | 674 | 338 |
| Language | TypeScript | Python |
| License | Apache-2.0 | Other |
| Last pushed | Jul 7, 2026 | Jul 2, 2026 |
| Categories | LLM Frameworks, Evaluation & Observability | LLM Frameworks, Inference & Serving |
langwatch
LangWatch provides tools to test, simulate, evaluate, and monitor language model-powered agents in end-to-end scenarios before release and during production. This includes features such as end-to-end agent simulations, real-time eval + observability, dataset creation, evaluation, and prompt optimization.
TypeScript
open-webui
Open WebUI is an extensible and feature-rich self-hosted AI platform that supports various LLM runners like Ollama and OpenAI-compatible APIs. It includes a built-in inference engine for RAG operations.
Python