TL;DR

I pitted three buzzy AI code assistants—Blitzy, Devin, and Factory AI—against the exact same real-world app-building task to see who writes the cleanest, most maintainable code with the least programmer elbow grease. We kicked things off with a shared prompt, scored each on a standardized SWE Bench, then dove into their actual implementations to compare speed, accuracy, and how much hand-holding you still need.

Along the way, you’ll get timestamps for every major milestone (prompt, bench results, and each tool’s demo), plus quick links to the repos and technical reports. Whether you care about raw automation, clever tweaks, or hands-off workflows, this showdown lays out which platform delivers the best bang for your buck.

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