Preproduction by Redspring

From 5.52 Seconds to 0.44: Building a Streaming Voice System Around a Diffusion Model

We started with four ordinary OpenAI calls and ended with a low-cost hybrid stack that begins speaking in under a second.

Sep 10 • Obssa Bizuwork and Loren Riesenfeld

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August 2026

We built a focus app and tested loop engineering in the process

Recently, Loren got back from a ten-day silent meditation retreat with a fire under him about changing his relationship with the internet.

Aug 26 • Loren Riesenfeld and Obssa Bizuwork

Write Your Evals Before You Write Your Product

How a non-technical founder can define and measure”good” before a single line of code is written.

Aug 17 • Obssa Bizuwork and Loren Riesenfeld

July 2026

Narrative Games in the Age of AI

What we learned building a murder mystery with Lemony Snicket

Jul 23 • Loren Riesenfeld and Obssa Bizuwork

June 2026

OCR’ing 100,000 pages with open-source VLMs on Modal

We wanted to answer a simple question: what does it actually take to OCR a large document corpus using open-source vision-language models?

Jun 25 • Loren Riesenfeld and Obssa Bizuwork

July 2025

We Benchmarked Frontier Reasoning Models on The Atlantic's Bracket City

I’ve been obsessed with The Atlantic’s new word game, Bracket City.

Jul 15, 2025 • Loren Riesenfeld