
Alpha Builders
Quant strategies through chat. 13 years of US data.
What it does
Quant tools today: too expensive (Bloomberg) or too technical (Python). Most chat AI can talk about strategies but can't actually run them. Alpha Builders is the missing middle. Describe your idea in plain English. AI builds it from 75 factors. Backtest 13 years of US data in 30 seconds. Track it forward as a live simulation — every market close, real prices, side-by-side with the S&P 500. No code. Free.
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Hey HN, Henry from Cactus here! We previously released Cactus Needle, a 14MB agentic LLM for tool call, device use, and structured extraction for phones, wearables, smart homes, small robots and microcontrollers. We got really great feedback here, and have now incorporated the suggestions to release Needle 2. The whole model is a single 14MB binary that runs a full session in 28MB of RAM; 45m parameters at 2bit compression. Needle hits 500 tokens/sec decode speed on a Raspberry Pi 5, sits between 400-1,500 tokens/sec on VR devices like Meta Quest 3S and Apple Vision Pro, and ranges…
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Launched alongside, May 2026
the whole month →

Parallel agents, diff reviewer, and multi-model comparisons
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Dev tools · May 2026 · github.com