Magnitude – open-source, AI-native test framework for web apps
Hey HN, Anders and Tom here - we’ve been building an end-to-end testing framework powered by visual LLM agents to replace traditional web testing. We know there's a lot of noise about different browser agents. If you've tried any of them, you know they're slow, expensive, and inconsistent. That's why we built an agent specifically for running test cases and optimized it just for that: - Pure vision instead of error prone "set-of-marks" system (the colorful boxes you see in browser-use for example) - Use tiny VLM (Moondream) instead of OpenAI/Anthropic computer use for dramatically…
Magnitude – open-source, AI-native test framework for web apps launched on April 25, 2025 with 179 votes, #216 of 7,818 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
Magnitude is an open-source end-to-end testing framework for web applications that uses visual language models instead of traditional browser automation. It employs two specialized agents: one to plan and adapt test cases, and another to execute them quickly and consistently. The system uses a smaller vision model for faster and cheaper operation compared to existing browser agents, and relies on pure visual interpretation rather than marked-element systems for improved reliability.
written from the facts on this page · September 2026
From the sources
Open source local inference engine. It runs models on the hardware you already have, whether that's a Mac, an NVIDIA or AMD GPU, or just a CPU. Plug it into Pi, OpenCode, Hermes, OpenClaw, Codex, Claude Code, Oh My Pi, and Cline. - magnitudedev/magnitude
In the maker’s words, at launch
Hey HN, Anders and Tom here - we’ve been building an end-to-end testing framework powered by visual LLM agents to replace traditional web testing. We know there's a lot of noise about different browser agents. If you've tried any of them, you know they're slow, expensive, and inconsistent. That's why we built an…
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