Pinned Tweet
Demo now!
Karumi (@karumihq) is an AI demo agent that makes product demos scalable — it talks, clicks, and personalizes every walkthrough, 24/7.
1
7
4,632
Day 2 at Web Summit is cancelled but your pitch isn't.
Karumi is offering 25 companies a free AI agent led demo you can send to your prospects right away.
karumi.pulse.ly/1srlrlqf72
Don't tell @WebSummit.
At @WebSummit Lisbon? Start Wednesday light.
Karumi Run Club: an easy sunrise 5K along the Tagus.
🗓 Wed, Nov 11 · 7:30 AM
📍 Rua Augusta Arch
☕ Coffee and pastéis de nata at the finish
👋 Then say hi at booth B3-01
Want to join us? Link in the first comment
Karumi (YC F25) retweeted
Karumi is an AI agent that joins a live video call with your prospects and gives them a personalized product demo, 24/7, in any language.
Pablo Omeñaca (@houmland) and Toni Lopez (@tonilopezmr) both came from StackAI (YC W23). They saw that buyers want to see the product the moment they're curious, and sales teams are rarely free right then.
At YC in Fall 2025 they launched Karumi as an agent that matches human reps in clarity. It opens tabs, navigates your product live, pulls in the prospect's context and retrains itself as the product changes.
@guilleflorvs and I backed them through GR Angel.
nitter.gq/rdominguezibar/status/…
PERSONAL NEWS: After 1 year in stealth @guilleflorvs and I are launching GR Angel
We invest in exceptional founders, put them in front of one of the biggest tech audiences in the world: + 600k followers, + 400k subs & 10M weekly views
Across our personal angel investments and GR Angel, we’ve now backed:
→ A portfolio that has raised $1.2B+
→ Companies including HappyRobot, Replit, Starcloud, Peec ai
→ Alongside investors including a16z, Sequoia, Founders Fund and General Catalyst
→ 1 Exit: Portco went from $10Kmrr to 7M arr in close to 1 year
Our distribution has helped startups get millions of views, increase their ARR, and receive term sheets
Now we’re looking for the most cracked founders worldwide, investing bigger checks, and hiring
you can reach out to us 24 7 👀
Karumi (YC F25) retweeted
One of the first investments we did was @KarumiAI
We hadn't ever seen that level of hard work and talent together 🔥
They're cooking
BREAKING: After 1 year in stealth, @rdominguezibar and I are launching GR Angel.
We invest in exceptional founders, put them in front of one of the biggest tech audiences in the world: + 600k followers, + 400k subs & 10M weekly views.
Across our personal angel investments and GR Angel, we’ve now backed:
→ A portfolio that has raised $1.2B+
→ Companies including HappyRobot, Replit, Nozomio, Throxy, Apollo Atomics, Gru Space, Didit, Aktoria Robotics, Arga Labs, Hyperspell and QFEX
→ Alongside investors including a16z, Sequoia, Founders Fund and General Catalyst
→ 1 Exit: Portco went from $10Kmrr to 7M arr in close to 1 year
Our distribution has helped startups get millions of views, one doubled its ARR and another received a $1M investment offer and much more.
Now we’re looking for the most cracked founders worldwide, investing bigger checks and starting our growth phase, you can reach out to us 24 7 and hiring 👀
How did you do this, @tonilopezmr and @houmland? 😂
Karumi (YC F25) retweeted
The team is doing some interviews at @hackspain26 👀👀
We're at @hackspain26 this weekend!
Stop anyone wearing a Karumi t-shirt and ask for credits
Yep, that's me!
Today we've launched Karumi's website agent, the missing piece of your agentic inbound motion.
It:
→ answers first questions
→ qualifies intent
→ runs light product demos
→ routes prospects to sales or self-serve
We’ve seen up to ~34% more top-of-funnel leads while automating 100% of first-touch inbound.
And every interaction becomes GTM intelligence:
→ better campaign data for marketing
→ better context for sales outreach
More pipeline. Better-qualified leads. Same headcount.
DM me if you’re building an agentic inbound motion.
2
310
We got the entire Karumi (YC F25) team in one room alongside more than 30 builders.
Topic: product communication and customer success.
This one is personal. Karumi exists because product communication was broken at StackAI. The product evolved so fast that salespeople didn't know what had changed. Customers got outdated demos. Teams were completely out of sync.
That pain is literally why we're here.
We presented different ideas. What works. What doesn't. What most companies get wrong. Engineers, founders, operators. Everyone had a take. Everyone had felt this problem.
Because the best products lose deals every day. Not because the product isn't good. Because people don't really understand your value. What makes you different. They don't truly understand your product and your company.
The energy in the room was unreal. 30+ builders who care about this problem as much as we do.
After the event, the team stayed until midnight. Coding, shipping, laughing, playing good songs. That's the Karumi DNA.
Nights like this tell me we're on the right track.
1
208