Ivo Tzanev

Co-Founder entrepreneur and esports fanatic. Investing, tech, chess, family, skiing, yachting, travel, poker, science, sports, space

[Ivo Tzanev @Ivaylo27]

Fix bug → ship → check Stripe → check again → nothing → nothing → check a third time → go to bed → wake up to a notification → it's a question, not a purchase → fix that bug → repeat.

[Ivo Tzanev @Ivaylo27]

Cursor wrote the bug, Claude found it, a third model documented the failure in forensic detail. The only thing that actually learned from the session was the codebase.

[Ivo Tzanev @Ivaylo27]

Open a file your AI wrote three weeks ago. Stare at it. The logic is right. You have no idea why. Check the commit: 'fix edge case.' Which one? Close the tab. Open the chat. Type: 'what does this function do?' Read the reply. Close the chat. Ship it anyway.

[Ivo Tzanev @Ivaylo27]

The bug was exactly where you were most certain nothing could go wrong.

[Ivo Tzanev @Ivaylo27]

Every solopreneur 'day in the life' post: surf at 6am, deep work by 9, done by 3.

Mine: 11 open tabs, a Slack I forgot to send, a feature that's been 'almost done' for four days.

[Ivo Tzanev @Ivaylo27]

Last week, Recursive raised $650M to build AI that automates creating more AI. The roadmap writes itself. Presumably the pitch deck for the Series B does too.

[Ivo Tzanev @Ivaylo27]

Broken webhook at 7:47am, three Stack Overflow tabs, one email sent to a customer that should've stayed in drafts. Absolutely fine.

[Ivo Tzanev @Ivaylo27]

Optimized a prompt to save $0.003 per call today. Standard Intelligence raised $75M to build 'efficient' AI. Both true.

[Ivo Tzanev @Ivaylo27]

Ineffable Intelligence raised $1.1B to build AI that learns without human data. I'm building without investors. Different axis, same ambition.

[Ivo Tzanev @Ivaylo27]

One founder's public post this week: 400K impressions, 4 organic users, 0 paying customers.

[Ivo Tzanev @Ivaylo27]

Asking users to pick a paid plan before they've seen your product isn't a paywall. It's a filter. One that quietly removes everyone who hasn't already decided to trust you.

[Ivo Tzanev @Ivaylo27]

The metrics that matter most to your product never show up in a YC app. Investors want ARR, MRR, churn. Those tell you if the business is alive. The signals that tell you if anyone actually cares, most founders can't name them. They live in the session data nobody checks.

[Ivo Tzanev @Ivaylo27]

2am. Bug is fixed. Logs are green.

You push the patch, close the laptop, and lie there.

The thing that triggered it is still in the codebase. You patched the condition it hit. You haven't named the thing itself. That part's still in there, waiting.

[Ivo Tzanev @Ivaylo27]

AI didn't kill 'learn to code.' It made shipping dependency on other people more expensive than ever.

[Ivo Tzanev @Ivaylo27]

Build in public doesn't make you accountable. It makes your failures entertaining. Those aren't the same thing.

[Ivo Tzanev @Ivaylo27]

A $1.1B 'seed round.' At some point the word is doing cosplay.

[Ivo Tzanev @Ivaylo27]

He made $7k in 5 days. Called it a win, then listed three mistakes that kept it from $70k. None were about the product. All three were about who saw it and when.

[Ivo Tzanev @Ivaylo27]

Ivan Kuckir hit $500K ARR solo. 15 years. 70+ projects.

The overnight success took 5,475 nights.

Most posts shared the milestone. None of them counted the nights before it.

[Ivo Tzanev @Ivaylo27]

3:47am. API timing out at exactly 18 seconds, every request, without fail.

No on-call rotation. No Slack channel. Just me, a terminal, and a bug hiding in code nobody touched in six months.

This is what solo debugging actually looks like.

[Ivo Tzanev @Ivaylo27]

This week: Sierra raised $950M to 'own enterprise AI.'

Also this week: IH Slack debating whether $12/month is too steep for a URL shortener.

Both completely rational. Neither can help the other.