ChaosBench
An AI interviewer that actually argues back
What it does
The definitive system design interview simulator for Mid-Level, Senior, and Principal engineers. Drag and drop your architecture onto a real interactive canvas, get interrogated on requirements, survive a live Chaos Engine incident, and defend your tradeoffs to an AI Staff Engineer before the real interview does. PS: you can download your work to actually turn your design to an implementation
The system design interview simulator for Mid, Senior, and Principal engineers — build, break, and defend your architecture against an AI that argues back.
The definitive system design interview simulator for engineers at every level — Mid, Senior, and Principal. Drag and drop your architecture onto a real interactive canvas, then stress-test it before you write a single line of code. New to system design? We explain jargon in plain language as you go. The board stays locked until you've asked the right questions and uncovered the requirements no one told you about. Drag, drop, and connect real components on an interactive canvas — no diagramming tool, no slides. A live, scenario-specific incident fires mid-build. Your architecture either absorbs it or it doesn't — no partial credit. A Staff Engineer cross-examines your specific tradeoffs,…from chaosbench.com
Does the same job
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Hi HN, we’re Sai and Aayush, and we’re building Hypercubic (https://www.hypercubic.ai/), bringing AI tools to the mainframe and COBOL world. (We did a Launch HN last year: https://news.ycombinator.com/item?id=45877517.) Today we’re launching Hopper, an agentic development environment for mainframes. You can download it here: https://www.hypercubic.ai/hopper, and you can also request access and immediately get a mainframe user account to play with. There's also a video runthrough at https://www.youtube.com/watch?v=q81L5DcfBvE.…

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Hey HN! We’re Jared, Shreyas, and Varun the creators of TechInterviewer. We’re building a product for software engineers to go through an entirely simulated systems design interview. Our AI interviewer, Steve, gives you a prompt and you talk out loud and draw on a whiteboard while Steve guides you through the interview and gives real-time feedback. Check out our demo: https://app.techinterviewer.ai Every software engineer today has to prepare for systems design interviews and have two awful options: pay hundreds of dollars for a single session with a FAANG engineer or follow…
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Hi everyone, I’ve been working on an open-source tool called Flakestorm to test the reliability of AI agents before they hit production. Most agent testing today focuses on eval scores or happy-path prompts. In practice, agents tend to fail in more mundane ways: typos, tone shifts, long context, malformed input, or simple prompt injections — especially when running on smaller or local models. Flakestorm applies chaos-engineering ideas to agents. Instead of testing one prompt, it takes a “golden prompt”, generates adversarial mutations (semantic variations, noise, injections, encoding edge…
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