LangWatch vs VRUNAI
LangWatch
langwatch.aiVRUNAI
vrunai.comSide by side
| Figure | LangWatch | VRUNAI |
|---|---|---|
| Price from | €29/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 3 | 1 |
| Spec score · AI Agent Evaluation Tools | 9.0 (#5) | 7.0 (#27) |
| Intended users | The company says the platform is for AI teams shipping agents and describes evaluation workflows for developers, product owners, QA, and domain experts. | The site presents VRUNAI for people evaluating LLM agents and comparing their behavior across providers. |
| Privacy | The trust center says LangWatch provides automatic PII detection and removal, GDPR right-to-be-forgotten, and enterprise DPAs. | The CLI runs on the user's machine and the site says its keys stay in the terminal; web app keys are stored in browser localStorage and sent directly to configured provider APIs. |
| Support | Developer users receive GitHub and Discord community support, while Growth includes private Slack or Teams support. | The site links to GitHub for bug reports and feature requests. |
| What it does | LangWatch is an AI-agent engineering platform for testing, evaluating, observing, governing and improving agents across development and production. | VRUNAI evaluates LLM agents across execution path, tool calls, and final outcomes. |
Plans
In their own words
LangWatch
LangWatch is an AI agent engineering platform for teams preparing agents for production. Simulations cover multi-turn conversations, tool use, recovery, and business outcomes before launch. Evaluations can run on datasets, production traffic, or in CI/CD workflows that gate merges. Traces show agent steps alongside cost, tokens, duration, errors, evaluations, and annotations. Integrations include Python and TypeScript SDKs, OpenTelemetry, REST ingestion, model providers, and frameworks such as LangGraph, LangChain, CrewAI, and DSPy. Voice-agent testing supports OpenAI Realtime, Gemini, ElevenLabs, Google Live API, Pipecat, WebSocket bots, and Twilio. Deployment options are managed cloud, self-hosted, and hybrid; self-hosting uses Docker Compose and the customer’s ClickHouse. LangWatch is open source under Apache 2.0. The Developer plan costs nothing and includes 50k events per month, 14-day data access, and two users. Growth costs €29 a month per core seat and includes 200k events. The trust center lists encryption, access controls, privacy features, and enterprise DPAs.