Arvist · Sep 2026
Simulithic (YC F26) Launch Video
Simulithic · Oct 2026 · 1:22 · AI-annotated · YC Fall 2026
Founder-led live action on a dusk pier alternates with isometric 3D product demos, moving from the manual-testing pain through the launch, three feature beats and a URL end card. Signature moves: oversized blue headlines layered behind the speakers, word-by-word captions with blue keyword underlines, white pill labels, and white pedestals holding the blue pixel-mark hub.
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Simulithic (YC F26) Launch Video, scene by scene
· 25 scenes as text
01 · Hook · 0:00–0:03
Two men in black hoodies stand on a waterfront pier at dusk, talking to the camera. Oversized blue headline text is layered behind them, swapping from THE BEST END-TO-END TEST to JUST USED THE APP., while white subtitles caption the voiceover along the bottom.
On-screen text: “THE BEST END-TO-END TEST”, “JUST USED THE APP.”, “ever written is the one where they just used the app.”
Techniques: Kinetic type
Camera: Static
02 · Hook · 0:03–0:06
Two young men in black hoodies stand on a waterfront at sunset, harbor cranes behind them. The man on the right gestures while speaking as captions appear at the bottom; the camera shifts from a front view to a side profile.
On-screen text: “ever written is the one”, “Clicked through it. Tried to break it.”, “Just like a real user would”
Camera: Static
03 · Problem · 0:06–0:13
Two men stand in profile on a rooftop at dusk, port cranes behind them; the speaker in a black hoodie gestures while white captions build word by word, keywords underlined in blue, and white pill labels stack at top left.
On-screen text: “But the problem is”, “manual testing”, “isn't scalable.”, “You can't spend hours clicking through”, “Every device”, “every device and every browser that your user has”, “Every browser”, “Every change”, “on every change.”
Techniques: Kinetic type
Camera: Push in
04 · Problem · 0:13–0:15
Two men in black jackets sit on a waterfront railing at dusk, harbor cranes and a pale sky behind them. The man on the right speaks to camera and gestures with his hands while white subtitles sit at the bottom of the locked-off frame.
On-screen text: “on every change.”, “This is a problem that we encountered on every team we shipped code at.”
Camera: Static
05 · Social proof · 0:15–0:17
Two young men in black stand on a waterfront walkway at sunset, one gesturing as he speaks. White pill-shaped logo badges for Uber, Ramp, Shopify and Bree pop in across the lower frame one by one.
On-screen text: “Uber”, “Ramp”, “Shopify”, “Bree”
Camera: Static
06 · Problem · 0:17–0:21
Two men in black stand at a waterfront railing at dusk, the one with glasses speaking and gesturing while his companion stays still. White subtitle captions with a blue underline on the keyword appear bottom center against a backdrop of harbor cranes.
On-screen text: “The slowest part of coding wasn't writing it.”, “It was clicking through the app to check if it still worked.”
Camera: Static
07 · Problem · 0:21–0:23
Two men stand on a waterfront balcony at dusk behind a mesh railing. The left man in a black hoodie gestures while speaking; the right man in a black jacket stands still, hands clasped. A caption line sits at the bottom.
On-screen text: “It was clicking through the app to check if it still worked.”, “So we asked ourselves, if the test is supposed to act like a user,”
Camera: Static
08 · Problem · 0:23–0:25
Two men in black jackets stand on a rooftop at dusk, one talking and gesturing, port cranes behind them. A white subtitle runs along the bottom, then a large white line, why isn't it actually one?, appears centered, the last word in blue.
On-screen text: “So we asked ourselves, if the test is supposed to act like a user,”, “why isn't it actually one?”
Camera: Static
09 · Product intro · 0:25–0:28
Two men stand at a waterfront railing at dusk, the left one gesturing as he speaks. A bold blue headline reads UNTIL NOW, above them, a second line IT COULDN'T BE. joins below it, then both clear and a white caption appears at the bottom.
On-screen text: “UNTIL NOW,”, “IT COULDN'T BE.”, “Today we're excited to be launching Simulithic.”
Techniques: Kinetic type
Camera: Static
10 · Product intro · 0:28–0:30
A white Simulithic wordmark with a square mark sits centered on a blue gradient and scales up gently. Below, a white caption line reads a launch sentence, then switches to a second line that fades in.
On-screen text: “Today we're excited to be launching Simulithic.”, “It learns how your real users move through your app and”
Techniques: Kinetic type
Camera: Static
11 · Feature reveal · 0:30–0:31
Two men in black hoodies stand on a waterfront balcony at dusk, the left one gesturing as he speaks. A solid blue circle pops in between them, holds briefly, then vanishes. A white caption line stays fixed at the bottom of the frame.
On-screen text: “It learns how your real users move through your app and”
Camera: Static
12 · Feature reveal · 0:31–0:33
An isometric grid of white tiles with red icons surrounds a blue chip; blue-outlined tiles trace dashed paths as the icons shuffle positions. A black terminal pill shows the map command above, and a caption with bold AI agents and a blue underline sits below.
On-screen text: “$ simulithic map https://acme.dev”, “turns them into AI agents that test every user flow,”
Techniques: 3D mockup
Camera: Static
13 · Feature reveal · 0:33–0:34
An isometric row of Macs, laptops, and phones on white pedestals, linked by blue lines, fades out. Two Safari browser windows with a MacBook and iPhone on pedestals fade in, and the caption changes to 'on every device and browser, every time you ship.'
On-screen text: “$ simulithic map https://acme.dev”, “turns them into AI agents that test every user flow,”, “on every device and browser, every time you ship.”
Techniques: 3D mockup
Camera: Static
14 · Feature reveal · 0:34–0:38
Two isometric panels show a laptop and a phone on platforms, linked by dashed lines to icon tiles for OS, browser and network. Selector labels swap between Safari, Chrome and Firefox, while a caption below updates to introduce a customer PR.
On-screen text: “on every device and browser, every time you ship.”, “Here's a PR from one of our customers, a language learning app,”
Techniques: Split screen, 3D mockup
Camera: Static
15 · Demo · 0:38–0:41
A white rounded card on a light grid fills in a pull request checklist, each test row sliding in with a blue checkmark, ending on a blue 'All checks passed' tag. A bottom caption changes to follow the narration.
On-screen text: “Here's a PR from one of our customers, a language learning app,”, “that passed every end-to-end test they had.”
Techniques: Kinetic type
Camera: Static
16 · Demo · 0:41–0:46
A flat course-progress UI: the stepper and progress bar fill to 50% under the Halfway through step, then snap back to 0% with a red Progress reset tag as the Finish a lesson step lights up red. A caption line types out word by word along the bottom.
On-screen text: “Simulithic sent in a user halfway through a course and found their progress reset the moment they finished a lesson.”
Techniques: Kinetic type
Camera: Static
17 · Demo · 0:46–0:50
Two men stand in profile on a rooftop at dusk, port cranes behind them. The man in a black hoodie talks and gestures while his companion listens. Large blue caption blocks swap on the left in time with the voiceover. Locked-off shot.
On-screen text: “NO TEST CAUGHT IT”, “BECAUSE NO ONE THOUGHT OF A TEST”, “THAT SHOULD START HALFWAY THROUGH A COURSE.”
Camera: Static
18 · Feature reveal · 0:50–0:52
Two young men in black hoodies stand in profile on a terrace at dusk, port cranes and a container ship behind them. The man in front speaks and gestures with one hand while a caption line sits at the bottom of the frame.
On-screen text: “Every Simulithic test runs in its own VM,”
Camera: Static
19 · Feature reveal · 0:52–0:56
A card labeled 'Its own VM' sits on a white grid above a blue bar that expands to reveal macOS, Windows, iOS, Android, Chrome, Safari and Firefox pills. The diagram then becomes an isometric 3D grid: a terminal, phones and a laptop on white platforms, dashed to a blue tile.
On-screen text: “Its own VM”, “recreating your users' exact device, browser and account state.”
Techniques: 3D mockup
Camera: Static
20 · Feature reveal · 0:56–0:59
An isometric grid holds 3D mockups: a black terminal links to Claude Code, Codex, a PR node, and test steps; a blue hub connects an iPhone, MacBook, and Android phone as labels pop in. The bottom caption reveals word by word, then swaps to the next line.
On-screen text: “And it runs wherever you ship: on every PR, in your terminal,”, “even in production.”
Techniques: 3D mockup, Kinetic type
Camera: Static
21 · Feature reveal · 0:59–1:01
Two men in black hoodies stand on a waterfront balcony at dusk; the left one gestures while talking. A locked-off medium shot holds them centered against harbor cranes and a gradient sky. Subtitle lines appear at the bottom, the word nothing filled in light blue.
On-screen text: “The best part is”, “that there's”, “nothing to set up.”
Camera: Static
22 · Feature reveal · 1:01–1:04
Two men in black stand in profile on a rooftop at dusk, port cranes behind them. A white caption runs along the bottom while two rounded pills, “Audits your app” and “Writes every test,” fade in at the top left.
On-screen text: “Our agent audits your app and writes all of the tests for you”, “Audits your app”, “Writes every test”
Camera: Static
23 · Other · 1:04–1:07
Two young men sit on a rooftop terrace at dusk, harbor cranes and a cargo ship behind them. The man on the right speaks to camera and gestures with both hands while the other listens. White subtitle captions appear at the bottom of the frame.
On-screen text: “Today with AI, code is getting written faster than anyone”, “can click through or write tests for it.”
Camera: Static
24 · Other · 1:07–1:10
Two men stand on a waterfront terrace at dusk, the left one gesturing as he speaks, harbor cranes behind them. A small caption sits at the bottom, then large text 'Simulithic makes sure' holds low in frame while 'everything still works.' appears word by word beneath it.
On-screen text: “can click through or write tests for it.”, “Simulithic makes sure”, “everything still works.”
Techniques: Kinetic type
Camera: Static
25 · CTA · 1:10–1:22
On a blue gradient background, the white Simulithic wordmark and pixel icon fade in centered, with the tagline and URL below. The tagline and URL then fade out, leaving the logo alone as the sign-off.
On-screen text: “Verify as fast as you can code.”, “simulithic.com”
Camera: Static







