Playbooks
Build-in-public AI founder· 14 min read·Updated Jul 2026
PLAYBOOK · A CaptureFlow teardown

How Fluently's Yurii Rebryk Turned Rejection Into a Founder Brand

We analyzed 100 of Yurii Rebryk's most recent posts to reverse-engineer the build-in-public engine behind Fluently's rise: the six content pillars, the hooks, and the two loops that turn every rejection, milestone, and AI headline into reach.

Yurii Rebryk, Founder & CEO, Fluently
Yurii Rebryk
Founder & CEO, Fluently · @yrebryk
135K+
Followers
720
Avg reactions per post
5,636
Reactions on his top post
01

Yurii's unfair advantage is posting the failures other founders hide

Most founders post the funding round. Yurii posts the 19 rejections that came before it, in the first person, with the numbers attached.

Yurii Rebryk is the founder and CEO of Fluently, the YC W24 AI English coach he scaled from roughly $48K to more than $7M in ARR. Before Fluently he failed with three startups, got rejected by Y Combinator twice, and was turned down by more than 20 accelerators. His LinkedIn account does not hide any of that. It leads with it. The account is a running, build-in-public log of one founder's journey, the losses and the wins, told plainly and posted about three times a week.

That honesty is the engine. Build-in-public growth is when your distribution comes from narrating your startup journey in public, the rejections, the milestones, the tactics you learned, in the founder's own voice, so other founders see themselves in your story. Yurii runs it with discipline: open on the rawest line, attach a real number, package it as a clean image, and close with a soft nudge toward Fluently.

The polished founder update

'Thrilled to announce our $2.5M round.' The win with none of the cost. Scrolled past in a second.

Yurii the narrator

'Got rejected. Got rejected. Got rejected...' The same round, told through the 19 rejections before it. You stop.

No rejection, no growth. Use them to get better.

From his most-reacted post, a wall of rejections that ends in YC and $6M+ ARR (5,636 reactions)

Five findings that repeated across 100 posts

  • Rejection is the reach engine. His biggest post is a wall of 'Got rejected.' lines that resolve into YC and $6M+ ARR (5,636 reactions); a similar failure-timeline post earned 3,264.
  • Conversation, not just applause. He averages 720 reactions a post, but his comment-to-reaction ratio is 10.6%, well above the ~6% LinkedIn norm. People reply, they don't just like.
  • Images are the format. 95 of his posts are images, and they average 740 reactions versus 391 for text-only. A single video appears in the whole set.
  • Useful beats clever. Alongside the personal stories he posts saveable resource lists (accelerators, AI stacks, YC guides) that founders bookmark and share.
  • Weekday discipline. About 3.2 posts a week, Monday and Wednesday heaviest, with almost nothing on the weekend.
02

The numbers behind the account

About 3 posts a week, weekdays only, carried almost entirely by text-on-image posts that get replied to as much as liked.

Across the 100 posts we analyzed, Yurii published about 3.2 times a week, entirely on weekdays, with Monday and Wednesday driving the most volume. That early-week rhythm lines up with how the platform distributes B2B content, which we break down in our guide to how the LinkedIn algorithm works.

When he posts

Mon24
Wed24
Thu17
Tue14
Fri13
Sat3
Sun0
Posts by weekday. The front half of the work week is the engine; weekends are nearly silent.

The content-type mix

Image95%
Text only4%
Video1%
Share of posts by format. Yurii is an image-first account, almost to the exclusion of everything else.
The image is not decoration, it is the format. His 90 image posts average 740 reactions while text-only trails at 391. The images are clean, readable graphics: a rejection list, a numbered ranking, a labeled AI stack, so the point lands in the feed before anyone taps 'see more'.

Where the engagement comes from

Like88%
Empathy4.3%
Interest4%
Praise2.8%
Appreciation0.9%
Entertainment0.1%
Reaction mix across the account.

The top posts

His two biggest posts are personal failure stories; the rest are AI news and founder tooling.

Want to see how your own account stacks up on cadence and engagement? Run it through our free LinkedIn analyzer.

20
posts cleared 1,000 reactions in a seven-month window
03

The six content pillars

Every post is one of six repeatable buckets, so a busy founder never runs out of things to say.

Rejection and comeback stories
Highest

The failures before the win, told in the first person with real numbers. His widest-reaching pillar by far.

AI news breakdowns
Very high

Timely takes on funding rounds, acquisitions, and lab launches, explained for founders.

Accelerator and YC playbooks
High

Saveable resource lists: accelerators, application guides, free-credit programs.

Claude Code and AI tooling
High

How a lean team ships faster with AI: CLAUDE.md files, agent setups, the modern stack.

Fluently growth breakdowns
Steady

Build-in-public teardowns of how Fluently actually grew: UGC, organic video, revenue tracking.

Fundraising and pitch tactics
Steady

The decks, pitch formulas, and fundraising lessons from raising $2.5M as a second-language founder.

Pillar 1: Rejection and comeback stories (the reach engine)

Yurii Rebryk
@yrebryk ·
Got rejected. Got rejected. Got rejected. Got rejected. Got rejected. Got a reply. Got rejected. Had a call. Got rejected. Got an interview. Got rejected. Got an interview. Got rejected. Got one more interview. Accepted into Y Combinator. Closed a $2.5M Seed round. Scaled my startup to $6M+ ARR in 1 year.
5,636 383 68View post

Why it works: His single biggest post is a rhythm, not a paragraph. The repetition of 'Got rejected.' makes the reader feel the grind, then the last three lines pay it all off. A real emotional arc plus real numbers is his widest-reaching combination.

Pillar 2: AI news breakdowns (the volume engine)

Yurii Rebryk
@yrebryk ·
Meta just made its biggest AI bet yet - $2B for an 8-month-old startup 😳 Meta is acquiring Manus, and it might be Zuckerberg’s smartest move in AI. Why? Because while most AI startups are busy showing off cool demos with no revenue, Manus built a product people actually pay for.
1,652 168 67View post

Why it works: He does not just report the news, he draws the founder lesson from it (build revenue, not demos). Reacting to what everyone is already talking about borrows the topic's reach, then his angle keeps the reader. This pillar is his steady drumbeat between the personal stories.

Pillar 3: Accelerator and YC playbooks (the save magnet)

Yurii Rebryk
@yrebryk ·
All the best startup accelerators to apply in 2026: 1. Y Combinator ($500k for ~7%) 2. Sequoia Arc ($1M for ~10%) 3. a16z Speedrun ($500k for 10% + $500k guaranteed follow-on) 4. South Park Commons ($400k for 7% + $600k guaranteed follow-on) 5. NEO Residency ($750k uncapped SAFE, variable equity) 6. HF0 Residency ($1M uncapped SAFE for 5%)
1,782 106 163View post

Why it works: A reference list is the most reposted format he runs (163 reposts here). It is instantly useful, so people save it and tag a co-founder. He earns the authority to write it by having gone through YC himself, which he says in the same post.

Pillar 4: Claude Code and AI tooling (the builder's edge)

Yurii Rebryk
@yrebryk ·
This 𝗖𝗟𝗔𝗨𝗗𝗘.𝗺𝗱 file can help you ship 10x faster 👇 It combines all the best practices shared by creator of Claude Code: Boris Cherny (creator of Claude Code at Anthropic) shared on X internal best practices his team actually uses with Claude Code daily. Someone turned his threads into a structured 𝗖𝗟𝗔𝗨𝗗𝗘.𝗺𝗱 file you can plug into any project.
2,204 145 178View post

Why it works: Tactical AI-workflow posts are his most reposted pillar (178 here). He ties every one back to Fluently ('we use Claude Code daily to ship features'), so a how-to doubles as proof that his own lean team practices what it preaches.

Pillar 5: Fluently growth breakdowns (the proof)

Yurii Rebryk
@yrebryk ·
In the last year, we scaled Fluently from $48K → $7M+ ARR. Most of that growth came from short-form video content: We hit 1.5B+ views across TikTok, IG, and YouTube - with $0 ad spent. Here’s the blueprint we used to crack UGC growth 👇
1,045 122 46View post

Why it works: He shares the actual playbook, numbered and specific, not a vague 'we grew fast'. Giving away the real mechanics ($0 ad spend, 1.5B views) makes the story believable and positions Fluently as a company that clearly knows how to distribute content.

Pillar 6: Fundraising and pitch tactics (the credibility)

Yurii Rebryk
@yrebryk ·
The one-minute pitch that makes investors say YES. Most founders don’t fail to raise money because their idea is bad. They fail because they say too much. After pitching my startup Fluently: AI English tutor dozens of times and hearing 100+ other founders pitch, I noticed a clear pattern: The founders who get the funding aren’t always the smartest. They’re the clearest.
1,044 102 101View post

Why it works: He turns his own reps (dozens of pitches, 100+ founders heard) into a fill-in-the-blank framework a reader can copy. Earned lessons packaged as a template are more credible than generic advice, because the reader knows he actually raised the round.

04

The hooks that earned the click

The through-line is that the first line is the whole payload: a rejection, a number, or a headline. Yurii never warms up.

The failure ladder

Stack the losses, one per line. 'Got rejected. Got rejected. Got rejected...'

The seen vs unseen

Contrast the highlight reel with the cost. 'What people see... What people don't see...'

The breaking-news drop

Lead with the headline and the number. 'Meta just made its biggest AI bet yet - $2B...'

The authority borrow

Attach a famous name. 'CEO of Y Combinator shared his CLAUDE.md prompt for Claude Code.'

The saveable list

Promise a complete resource. 'All the best startup accelerators to apply in 2026:'

The outcome promise

Name the result the reader wants. 'This CLAUDE.md file can help you ship 10x faster.'

For the mechanics of writing openers like these, our guide to writing LinkedIn hooks goes deeper, and you can pressure-test your own first line in the free hook generator.

His top hooks, by the numbers

Hook typeOpening lineReactions
Failure ladder'Got rejected. Got rejected. Got rejected…'5,636
Personal timeline'At 18, I failed to get an internship abroad.'3,264
Authority borrow'CEO of Y Combinator shared his CLAUDE.md prompt…'3,230
Breaking news'Y Combinator announced AI Startup School 2026'2,659
Saveable list'All the best startup accelerators to apply in 2026:'1,782
Every top hook is concrete in the first line: a number, a name, or a raw admission. None open with a teaser.
The hook is the whole story compressed, not a cliffhanger. Yurii puts the rejection, the number, or the headline in line one, so the feed stops on substance. His most personal openers ('Got rejected', 'At 18, I failed') beat his cleverest ones every time.
05

A founder voice that reads like a group chat, not a keynote

It sounds like a founder texting the lessons to a friend, in short lines, with a real number in every one.

  • Opens on the payload. The first line is the rejection, the number, or the headline, never a windup.
  • First-person and specific. 'I failed', 'we scaled', with the exact figure attached ($2.5M, $7M+ ARR, 1.5B views).
  • Short lines and arrows. One idea per line, → and numbered bullets as signposts, generous white space.
  • Ends with a nudge. A soft 'Your thoughts?' or a 'P.S.' pointing to Fluently, rather than a hard sell.
  • Vulnerable on purpose. He names the 70-hour weeks, the no car, the sleepless nights, not just the wins.
  • Emoji as punctuation. A closing 💪, a 🔥 on a launch, a 🚨 on breaking news, used sparingly to set tone.

The voice is recognizable partly because of recurring devices: the 'What people see / What people don't see' split, the 'Your thoughts?' sign-off that invites replies, the '♻️ Save this and share' nudge on resource lists, and the standing Fluently P.S. at the foot of almost every post.

What he does, and doesn't, do

Yurii does
  • Open on the rawest line
  • Attach a real, specific number
  • Share the failures, not just the wins
  • Give away the actual playbook
  • Invite a reply at the end
Yurii avoids
  • Bury the lede behind a teaser
  • Vague motivation with no numbers
  • Highlight-reel-only updates
  • Withholding the useful part
  • Ending on a hard product pitch

Holding that voice across rejection stories, AI news, resource lists, and tooling how-tos at three-plus posts a week is the part almost nobody sustains, and it is exactly the gap CaptureFlow closes. CaptureFlow is an AI content agent that turns your expertise into weeks of on-brand content for every platform. You capture one idea in 5 minutes (a voice note about a rejection, a reaction to a funding headline, a lesson from a pitch), and CaptureFlow, trained on your voice and your past posts, drafts native content for each channel, a LinkedIn post, an X thread, a carousel, a short video, so scaling the cadence never costs authenticity. See how the AI content agent works, or compare plans and pricing.

06

The systems underneath the posts

Two loops quietly turn 100 posts into a following, a lead list, and a warm top of funnel for Fluently.

The lead-magnet funnel

Reach135K+ followers
A saveable resource postaccelerator list, YC application guide
The gated call to action'comment YC and I'll DM you the guide'
Comment, connect, and DMone post drew 1,105 comments
The soft product handoffthe standing GetFluently.app P.S.

His most useful posts do double duty: they gate the best resource behind a comment and a connection request, which spikes engagement AND builds a warm list he can point at Fluently.

The credibility flywheel

  1. 1
    Yurii hits a real milestone
    Into YC, $2.5M raised, $48K to $7M+ ARR.
  2. 2
    He posts the story behind it
    The rejections and pivots, not just the headline.
  3. 3
    Founders see themselves
    The struggle is relatable, so they comment and follow.
  4. 4
    Reach and authority compound
    A bigger audience makes the next lesson land harder.
  5. 5
    The next milestone becomes the next post
    The journey keeps writing the content.
loops back to the top
Result: The startup journey writes the content, and the content grows the audience the next milestone impresses.

Choosing the media

Rejection story

A clean text-on-image graphic so the arc reads at a glance.

AI news

A hero image of the company or product in the headline.

Resource list

A branded, numbered list graphic built to be saved.

Tooling how-to

Annotated screenshots of the CLAUDE.md or agent setup.

Growth breakdown

The numbers up front: ARR, views, ad spend of $0.

Pitch tactic

The framework as a step-by-step graphic or deck slide.

The graphic is the format. 95 of Yurii's 100 posts are images, and they average 740 reactions versus 391 for text-only. Each one is a readable, self-contained slide, so the value lands in the feed before anyone expands the caption.

This build-in-public model is the same engine we mapped in the Marc Louvion playbook, and it is the template most founders building in public should study: make your real journey the story, and tell it with the numbers left in.

07

Your 30-day challenge

Run the playbook for a month. Turn your real founder journey into posts, one pillar at a time.

1Week 1: Tell the truth
  • Days 1-2: List every rejection and failure you've had, with the year and the number
  • Days 3-4: Post your failure ladder, one loss per line, ending on where you are now
  • Days 5-7: Share a 'what people see vs what people don't see' about your journey
2Week 2: Be useful
  • Days 8-9: Publish a saveable list (tools, accelerators, resources) in your niche
  • Days 10-11: React to a piece of industry news with your founder's angle
  • Days 12-14: Break down one tactic that actually worked for you, numbered and specific
3Week 3: Show the work
  • Days 15-17: Post a growth breakdown with the real numbers left in
  • Days 18-19: Share the framework behind a win (a pitch, a hire, a launch)
  • Days 20-21: Gate one great resource behind a comment to build a warm list
4Week 4: Compound it
  • Days 22-24: Reshare your strongest failure story with a new lesson on top
  • Days 25-27: Mark a milestone (revenue, users, a raise) as a journey, not a flex
  • Days 28-30: Review analytics and double down on the format that reached furthest

Want the cadence without writing every post from scratch? That is exactly what CaptureFlow's content agent automates.

The metrics to track weekly

MetricBenchmark to aim for
Reactions per post500+
Comments per post50+
Weekday posting cadence3+ per week
Reposts per post30+
Comment-to-reaction ratio8%+
Personal stories per month2+
Track these weekly to see whether the cadence is actually compounding.
The one thing that breaks the cadence
A brutal fundraising or shipping week. The fix is to batch-capture the raw moments up front, a voice note after a rejection, a screenshot of a milestone, a line about the lesson, so a hard week never leaves you staring at a blank editor. Here is how to batch a month of content in one sitting.

The takeaways

  • 01Make your failures the content. Yurii's biggest post is a wall of 'Got rejected.' lines that ends in YC and $6M+ ARR (5,636 reactions).
  • 02Open on the payload. His first line is always the rejection, the number, or the headline, never a windup.
  • 03Balance stories with useful lists. Personal posts build trust; accelerator and AI-stack lists get saved and reshared.
  • 04React to the news founders care about. Timely takes on funding rounds, YC, and Claude Code keep him in the feed.
  • 05Post images, not text. 95 of his 100 posts are clean graphics, averaging 740 reactions versus 391 for text-only.
  • 06Gate the best resource behind a comment. One YC-guide post drew 1,105 comments by asking readers to comment for the DM.

Frequently asked questions

How did Yurii Rebryk grow his LinkedIn following?
By building in public: raw rejection-and-comeback stories from Fluently's journey, plus AI news breakdowns and saveable accelerator lists, about 3 times a week. Across 100 recent posts he averaged 720 reactions each, and his account grew past 135K followers.
What kind of post performs best for Yurii Rebryk?
Personal failure stories with the numbers left in. His top post, a wall of 'Got rejected.' lines resolving into YC and $6M+ ARR, earned 5,636 reactions, and an 'At 18, I failed' timeline earned 3,264.
How often does Yurii Rebryk post, and when?
About 3.2 times a week, entirely on weekdays, with Monday and Wednesday heaviest and almost nothing landing on a weekend.
How do you apply this playbook without spending hours a week?
Batch-capture your real founder moments, then let a content agent draft in your voice. CaptureFlow turns one 5-minute capture into a week of native posts across platforms, so you can hold the cadence without writing every post from scratch.
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