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Mosaic (YC W25)
Mosaic (YC W25)
816 posts
Mosaic (YC W25)
@mosaic_so
agentic video editing
Mosaic (YC W25)’s posts
Today, we have some big news to share about what we’ve been working on these past few weeks:
Introducing Mosaic Canvas, a new paradigm for video editing.
With Canvas, you can now create and run your own video editing agents. Agents run video edits completely on autopilot, and
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really enjoyed listening to the latest with and
we used Mosaic's video editing AI agent to find some great clips from their pod and add captions — all on autopilot
here's one where they talk about the kind of founders looks for
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hi everyone this is here i am now intern in chief and ruler of the known universe
i accept card, cash, and sacrificial goats as offerings
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Adish Jain 
@_adishj
today, we're launching Mosaic, the agentic video editor.
in a world tending towards AI slop, create something real.
no waitlist — public beta is now live at mosaic [dot] so.
comment "MOSAIC" to get 1,000 free credits dropped into your account.
this release comes with 7 key
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Day 16 of Feature February: 24 Hours at Mosaic HQ
Not exactly a feature, but sharing the work that goes behind making them.
Here's a full 24 hour time-lapse of us grinding on Mosaic, from 10:38pm on 2.14.25 to 10.38pm on 2.15.25.
We're just two people, but we put in the hours
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collecting badges like i'm ash ketchup
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Adish Jain
@_adishj
10:00
Last week, Mosaic won 1st place in the AI demo competition at SaaStr Annual — beating out hundreds of other AI startups in one of the world's largest software conferences.
Beyond the prizes that come with winning, presenting at SaaStr was a high visibility opportunity that put
what we got done this week:
- finished new video editor
- connected new ai agent
- added chat interface
- web sockets to stream chat responses
- stateful edits for text elements
- video indexing/search
- library for ai gen assets
- sent out first beta tester invites
last weeks veo3 release took the twitter timeline by storm with hundreds of hyperrealistic AI video generations that were genuinely indistinguishable from reality
so we created WasThisMadeByAI, a platform where you can test out your ability to discern the real content from the
Mosaic's full legal entity name is "Mosaic AI Labs, Inc."
Our goal is to operate at the frontier of multimodal AI, video processing, and agentic systems.
Approaching these topics with a research-first orientation means we're not just trying to build a great product, we're
adopt me 
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Archie Sengupta
@archiexzzz
just wanted to keep this on record - today, mosaic (beta) launched, and i have been following @_adishj and mosaic's development for a long time now because few months ago, i was also trying to solve a similar problem in the video editing space. if you don't know: video editing
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edited on autopilot with mosaic's video editing agents :)
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Garry Tan
@garrytan
Startups have to rediscover zero bug bounce
Every few sprints get to zero P2 bugs before you start new feature work. Otherwise your product will be a low quality mess forever.
One part of great craft is getting to zero known bugs regularly.
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backend servers are very overloaded atm
mosaic may have long response times / some uploads may fail, we're on it
Mosaic is featured in the latest Blog: developers.googleblog.com/en/start-build
For this example, we took
's recent 35 minute Release Notes interview and used Mosaic to create a few different shorts from it, all on autopilot.
The first branch:
1. Finds the exact
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Stop trying to look like the next Stripe. YC's Aaron Epstein and Linear's CEO argue that owning your 'small startup' status is your biggest branding advantage. Authenticity wins.
This clip was automatically clipped, edited, and posted with Mosaic's AI agents.
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Today, we found out that FrameCut has won the 1st place $25,000 Grand Prize award in the Google Gemini Long Context competition. Out of the nearly 6,000 entrants, the judges were impressed by our "comprehensive approach and compelling vision for a product"
We have a new blog!
Check out our first post which enumerates some reflections and learnings from our journey through 's Winter 25 batch and what's in store for us next
usemosaic.ai/blog/y-combina…
a day in the life of a mosaic intern
prompt: "given these 21 clips, create a vlog style, day in the life video and add background synthwave music"
Day 2 of Feature February: Dynamic Text Overlays
Mosaic is able to understand your video and determine exactly what text needs to be added where based on what it sees and hears.
This can be used to highlight key moments in a video, add dynamic counters based on what
Replying to
2. YCombinator
Mosaic is now backed by , the #1 startup accelerator in the world. Now that Mosaic is part of YC, we plan to build even faster and launch a closed Beta in 2 weeks. If you're interested in getting early access, sign up at usemosaic.ai!
meta: using Mosaic to edit a video about Mosaic
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Adish Jain
@_adishj
September Stories: Day 1
Over the past couple months, the team at @mosaic_so has been deep in product development. We have been working with early design partners and Beta testers to make rapid progress and to ensure we're building something people want.
But today, I want to
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