Blog
Notes from building Reply Coach. Mostly about LinkedIn outreach, AI voice mimicry, and the parts of solo-dev SaaS nobody warns you about.
Why ChatGPT replies fail on LinkedIn
I sent 200 cold DMs with a stock GPT prompt and 200 with my own voice. The numbers weren't close.
April 22, 2026 · 6 min readBest LinkedIn AI reply tools in 2026 (I tested all of them)
Replai, Reply.io, Reepl, WiseReply, Reply Coach — what each one does well, where it falls apart, and what I'd actually pay for.
April 25, 2026 · 9 min readHow to write LinkedIn DMs in your voice (when you've been letting AI do it)
Five tells that give away GPT-flavored outreach, and the rough framework I use to undo them.
April 28, 2026 · 7 min readVoice-mimic eval: Claude Sonnet 4.6 vs GPT-4o vs Gemini 2.5 Flash
I scored three frontier models against a 20-case rubric for sounding like the person they're impersonating. Claude won — but the cost story is uglier than it looks.
April 30, 2026 · 10 min readFive LinkedIn cold-outreach templates that don't sound like AI
The exact openers I send when I want a reply — and the part most templates skip.
May 2, 2026 · 8 min read