CEO/cofounder @GrowthXAI - AI powered growth 🇧🇷🇺🇸🚀 // Previously CMO/growth at @DeepgramAI @scale_ai @HashiCorp @ServiceTitan

San Francisco, CA
Joined March 2009
Marcel Santilli retweeted
yea.. AI agents can build anything now building isn’t impressive anymore context and data decide who actually gets visibility
BIG NEWS: We just launched CheckThat[.]ai Buyer Intent + Free AEO Platform + Shared Prompt Library No cold start. Historical data included. --- "Seriously!? Yet another AEO tool?" I get it. I felt the same way. But I'm convinced the AEO category is fundamentally broken. Not the tools themselves. The assumption behind ALL of them: That tracking = improving. It DOES NOT. Google Analytics doesn't grow your traffic. An AEO subscription doesn't grow your AI visibility. What actually happens: Sign up → bad context → random prompts → zero data → $500-$3K/mo invoice. For prompts you're not even confident in. --- We took the complete OPPOSITE approach with CheckThat: We did the heavy lifting before you show up: → Top B2B software categories mapped → 5,800+ brands researched (and growing) → Millions of AI responses tracked daily → Human-reviewed prompt library (shared + free) Why? Working with 100+ brands at @GrowthXAI taught us: CONTEXT is everything. Your context drives your content quality. Your content quality drives your AI visibility. You can't create great content without context. You can't get context without understanding your buyers. You can't understand your buyers without data. --- To celebrate the launch, I'm doing 50 Free AEO Audit + Strategy sessions over the next month Retweet this post & comment "checkthat" and I'll send you a DM to get scheduled.
2
1
15
4,228
Marcel Santilli retweeted
Just dropped on @lennysan’s podcast. We bootstrapped @HelloSurgeAI to >$1B revenue with <100 people by obsessing over one thing: data quality matters more than everything else. Lenny and I talked about: • Why Anthropic and Google are winning • The brutal choice model builders face: Engagement vs. Values • The underappreciated post-training skills: Taste and Sophistication • Why Fields Medalists love teaching models on our platform • What RL environments teach us about agents • Why we're still a decade from AGI Listen to it here: lennysnewsletter.com/p/surge…
11
18
4
147
19,560
Marcel Santilli retweeted
great time w/ @saranormous @eladgil about the perils of benchmarks, SV startup monoculture, why you'll throw out 95% of your synthetic data (6 mo after the mess it made), RL richness, and why frontier math is a lot like poetry.
New 🔥 episode drop! Edwin Chen, CEO of Surge AI, is one of the best placed to understand the model landscape and evolution of data needs in AI. His hot takes: differentiation, Scale/Meta, why human data will prevail, why LMArena is “trash” and why founders need to stop hiring.
4
7
1
94
29,287
Marcel Santilli retweeted
my first ever podcast! great time jamming with @HarryStebbings @20vcFund about @HelloSurgeAI, why the best researchers don't sacrifice data quality for anything, and why startups should focus on building the best product instead of hype machines
$1BN+ in revenue. $0 in funding. “I would not sell to Zuck for $100BN.” Surge AI. The best company in tech that you might not have heard of. Their Founder, Edwin, never does interviews. Today he shares all with 20VC and my top 7 takeaways 👇
21
10
7
237
54,432
Scale AI’s marketing leader for two years is saying this about their biggest competitor after listening to our 20VC today. 👇
29
11
329
48,940
Surge has scaled to $1BN in revenue with $0 funding. Scale AI, their closest competitor, raised $1.6BN to get to $850M in ARR. Surge is the most underdiscussed story in tech. Tomorrow, I have their founder on 20VC for a special one. What are the must ask questions?
45
29
1
580
62,554
"We all know about Scale and its epic $14B investment from Meta. But what about @HelloSurgeAI 'quietly' doing $1B+ ARR in same space -- with zero VC fundraising??"
18
7
3
95
30,001
Marcel Santilli retweeted
$7.2M ARR in 12 months. This founder of an AI "services" company just shared his entire playbook that got them there. And it completely contradicts how most VCs think about “services businesses”. @GrowthXAI joined the Lean AI Leaderboard as the first AI-enabled services company with record-breaking numbers: → 70%+ margins → 13 employees → 48% win rate (lead-to-close) → $22M pipeline created (158 opportunities) → 100% ORGANIC growth (zero outbound, zero paid ads) All founded by a non-technical founder. @santilli revealed his most valuable AI workflows and automation systems powering their service delivery engine: 🔍 Deep Research Generator → Structured as a detailed flowchart with clear input/output paths → Conducts parallel deep research on each question simultaneously → Combines findings into a comprehensive research brief in minutes → Reduces execution time from 30 minutes to <1 minute ✅ AI Fact Checker → Fetches content and splits it into verifiable chunks → Extracts factual claims from each passage → Searches for evidence across multiple APIs → Categorizes facts as correct, unknown, or false with specific reasoning → Rewrites content while preserving voice and style 👥 Automated Hiring Assessment → Parses resume content and matches against job requirements → Analyzes video interview responses (with transcription) → Creates structured candidate evaluations → Automatically updates their ATS and posts to Slack But at $3M ARR, everything in their workflow systems broke: → A running workflow would clog up the entire environment for everyone else → External workflow tool (AirOps) billed them $20-30K monthly → New model releases (like GPT-4.1) required two weeks of refactoring → Team members duplicating workflows for clients introduced errors To solve this, they built a custom AI agent platform with: → AI coding agent that builds workflows with expert input (40hrs -> 20min) → Includes visualized flowcharts for complex operations → Auto-documentation of all workflow components → Runtime layer that reduced 2-hour workflows to 2 minutes → A system to test the effectiveness of each component The scale of their operation is massive: → Processing 100 million tokens monthly → Publishing 10,000,000 words per month for customers Two core principles drove their approach: → First principles thinking: Decompose every task into its atomic components before automating → Delegation expertise: If you can't clearly explain it to a human, you can't delegate it to AI They didn't write a single line of code until they reached $2M ARR, proving that non-technical founders can build AI-native operations by focusing on workflows before technology. I'm writing a resource guide on how to build and scale a lean AI-native company. What's your biggest challenge, OR most successful/interesting use case in building lean AI-native operations? If you have successful use cases of AI (outside of coding) in your company, share them in the comments or DM me, and I'll reach out and possibly feature your approach in the guide.
5
3
9
1,855
Marcel Santilli retweeted
🚀 Vapi 2.0 is live on Product Hunt. A big milestone for the team! Vapi is the infrastructure layer for real-time voice agents. It lets developers deploy LLM-powered phone agents that can talk, listen, reason, and act with sub-500ms latency and support for 60+ minute conversations. What’s new in 2.0: - 100+ model integrations (transcription, LLM, TTS) - Conversation workflows and knowledge bases - Vapi voices that sound human - Rock-solid enterprise infrastructure to scale to millions of calls - Real-time observability with Langfuse integration - A metric ton of voice agent configuration options We’ve now powered over 44 million calls across healthcare, support, logistics, and more. Try it live: 1-844-HEY-VAPI Show us some love: vapi.sh/4G6m0MG PS: Team Vapi has hidden Easter eggs on their Product Hunt page 👀 Find them and DM us what you spot to win a slice of the $10,000 prize pool!
24
25
10
147
26,659
Marcel Santilli retweeted
Here's how @browserbase / @pk_iv hacked the algorithm on Twitter (& LinkedIn) feeds to get "more reach than they deserved" on their launch 2 weeks ago đź§µ
3
2
1
37
7,227
Marcel Santilli retweeted
We're partnering with @AirOpsHQ and @santilli from GrowthX for a free webinar: How to Automate your Website Management with AI. 👉 Register here: strapi.link/4dVCGwj Date: October 29th Time: 9-10am PT Location: Online
2
5
1,070
Marcel Santilli retweeted
Excited to share that I'll be helping @santilli with the upcoming AI Workflows course on Maven. The course is GTM-focused but we'll cover general needs like identifying AI use cases with Jobs-to-Be-Done, real-world examples, prompting techniques, building workflows, and a lot more. maven.com/growthxlabs/ai-gro…
1
8
840
I've written a playbook with @santilli from @DeepgramAI about how they 24Xed traffic growth with AI workflows. Like + comment "AI workflows" (must follow, 24h only) to get the full playbook.
5
3
9
584
Marcel Santilli retweeted
.@OpenAI has announced that native speech-to-speech APIs are coming soon. A lot of us are eagerly awaiting access. Potential new use cases *and* even more latency reduction! But you don't have to wait for GPT-4o native speech input to build really cool voice+AI applications. We are seeing GPT-4o consistently deliver ~300ms time-to-first-byte for text prompts. This is fast! You can pipeline @DeepgramAI transcription → GPT-4o → Deepgram Aura or @elevenlabs voices. The latency of this tech stack is quite good — conversations feel natural. You just need to be careful about pipelining the data efficiently through the three stages (text-to-speech, inference, and speech-to-text). The hardest problems to solve from scratch are phrase endpointing and handling interruptions. You may want to either use @pipecat_ai to build your application or look at the implementations of phrase endpointing and interruption handling in Pipecat. A couple additional things: Don’t use WebSockets for voice conversational AI in mobile apps or browsers. WebSockets are fine for moving audio between servers in the cloud. But not for moving audio from edge devices to/from the cloud. Use WebRTC. You’ll have latency, reliability, and monitoring/observability issues with WebSockets. GPT-4o is impressively fast for text inference, and fast even with tool calling. The latency improvement over GPT-4T is really, really great. But the “vision” (image input) latency isn’t great (yet). In our testing, GPT-4of TTFB goes from ~300ms to ~2.5s if you add an image to the input. 1/2
7
38
4
409
120,076
Marcel Santilli retweeted
Here's a list of 30 of the fastest-growing early-stage AI startups, based on search volume. There’s no better way to ride the AI wave than by joining a breakout company in this space. All of these companies are hiring. 1) MindsDB mindsdb.com (remote) 2) PhotoRoom photoroom.com (remote / Paris) 3) Arthur AI arthur.ai (New York) 4) Deepgram deepgram.com (Bay Area) 5) Soundful soundful.com (San Diego) 6) Gamma gamma.app (Bay Area) 7) Roboflow roboflow.com (New York / Bay Area / remote) 8) Uizard uizard.io (remote) 9) Writesonic writesonic.com (remote / India) 10) Read AI read.ai (remote US) 11) Spot AI spot.ai (Bay Area) 12) Tome tome.app (Bay Area) 13) Character.Ai character.ai (Bay Area) 14) Otter AI otter.ai (Bay Area) 15) Frame AI frame.ai (New York) 16) D-ID d-id.com (Tel Aviv) 17) One AI oneai.com (Tel Aviv) 18) Deepnote deepnote.com (remote / Europe) 19) Tabnine tabnine.com (Tel Aviv) 20) Edge Impulse edgeimpulse.com (remote) 21) Docsumo docsumo.com (India / Nepal) 22) Scispace typeset.io (Bangalore) 23) Perplexity AI perplexity.ai (Bay Area) 24) Playground playground.com (remote US) 25) Elicit AI elicit.com (remote / Bay Area) 26) Copyleaks copyleaks.com (NY / Israel) 27) Langchain langchain.com (Bay Area) 28) PlayHT play.ht (remote / Bay Area) 29) Codeium codeium.com (Bay Area) 30) Vizcom vizcom.ai (remote / Bay Area)
2
14
2
83
18,372
AI phone agents are here. Here are 8 startups enabling this you should know about + funding: 1. Bland AI - undisclosed - available as an API - $0.09/minute
37
121
23
875
340,158
Marcel Santilli retweeted
An engineer's answer for SEO? meta data, site maps, & web vitals A marketer's answer for SEO? keywords & backlinks Ask an ex Google Principal Engineer? "Write stuff people want to click and read." (from @cramforce)
2
3
22
1,994
Marcel Santilli retweeted
@santilli 24x'd his organic traffic in a few months with an AI+human workflow that engineers and markters can learn in this workshop: growthsprint.dev/ai-seo
1
2
314
Marcel Santilli retweeted
Create a real-time speech assistant in just 10 minutes. Use #NextJS with @GroqInc and @DeepgramAI APIs 🚀 Follow and comment with "source" to get the full source.
108
61
5
411
106,969