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Alessio Fanelli

Partner & CTO, Decibel · 91 appearances on the record.

computed by AI from the episodes · how this works → · full disclaimer →

investorengineerfounderhost@fanahova ↗alessiofanelli.com ↗

Alessio Fanelli leads Seed and Series A investments in artificial intelligence, developer tools, and infrastructure at Decibel Partners. He is also the founder of Kernel Labs and co-hosts Latent Space: The AI Engineer Podcast.

37statements → 22claims → 12claims resolved → 75%fully supported → 3.57/5average certainty → 2.11/5average debate potential → 3.7/5argument clarity · the sources → 66said about them ↓

9 supported 3 partly supported 0 contradicted 10 not checkable as stated how the 22 claims stand · each chip opens the sources

4 predictions · 18 assertions · 6 opinions · 7 insights · 2 disclosures · every statement was checked. The predictions and assertions are the 22 claims: statements the public record can support or contradict. 12 are resolved, and 10 name no date, number or outcome precise enough to check. Everything else (opinions, insights, what ifs, disclosures) can never be settled by the record, so it carries no assessment.

The record, in short

What the tape says about how Alessio argues and how the claims held up. Everything they said, and everything said about them, is in the tabs below.

Their most notable supported claim

Assertion Supported
Fanelli: Anthropic scrapes 6,000 pages per referral, compared to OpenAI's 250
“Google would be a two to one crawl to referral ratio, so for every two pages, they will read, they will send you one visitor. He said OpenAI is 250 to one, so they'll read 250 of your pages and send you one person. And Anthropic was like 6000 to one. So they'l…”
Alessio Fanelli Apr 24, 2025 ▶ 50:01 Why Every Agent needs Open Source Cloud Sandboxes

Expressed certainty vs assessment result

none yet certainty 1
none yet certainty 2
100% certainty 3
86% certainty 4
none yet certainty 5

weighted support: a fully supported claim counts one, a partly supported claim counts half. Each filled bar is clickable and opens exactly those claims; "none yet" means nothing said at that certainty level has resolved yet

Argument clarity: do they answer the question? how? →

3.7 / 5 directness 3.2 · coherence 3.7 · precision 3.4 · compression 3.4

redirected or did not address 3 of 10 assessed questions (30%). Watch them ▸

This is a score against a rubric. It is not a rank. Every host question → answer exchange is scored with names hidden on directness, coherence, precision and compression, 1–5 each, on meaning alone: disfluencies are ignored, and only raw unedited episodes count. This is the score that measures thought. Every scored exchange, scores shown → · The rubric and its checks →

How they sound: not measured why? →

We measure speaking style by listening to the audio itself, and a fair number needs at least 2,000 words from one person on tape we have measured. There is too little of Alessio Fanelli on measured tape to publish a rate. This says nothing about how they speak.

Everything Alessio Fanelli said on Latent Space that made the record, most notable first. Filter by type, assessment or year in the ledger →

Opinion
Fanelli: Packaged AI security products cannot be taken seriously right now
“In AI, the surface to attack, which is the model is like still changing so quickly. They're like, you know, trying to formalize something into a product or like try and do something that is like a full, you know, I'm selling AI security. It's not really, you c…”
Alessio Fanelli Dec 16, 2025 ▶ 34:09 ⚡️Jailbreaking AGI: Pliny the Liberator & John V on Red Teaming, BT6, and the Future of AI Security
Opinion
Fanelli: VC Cycles Often Conflict with Real Security Progress
“Once you're in the VC cycle, you kind of need to do things that then get you to the next round. And I think a lot of times those are Opposed to doing things that actually matter and move the needle in the security community.”
Alessio Fanelli Dec 16, 2025 ▶ 33:26 ⚡️Jailbreaking AGI: Pliny the Liberator & John V on Red Teaming, BT6, and the Future of AI Security
Assertion Not checkable as stated
Fanelli: Cursor Default Model Switch Cost Anthropic $200M in ARR
“When cursors switch from Sonnet to GPT-V as like the default model that was like, you know, Two hundred million our revenue for Anthropic that kind of went away and like moved on to GPT-V.”
Alessio Fanelli Sep 25, 2025 ▶ 29:57 Amp: The Emperor Has No Clothes
Opinion
Fanelli: MCP integrations cannibalize SaaS companies' own paid products
“I feel like in a way the MCPs are like, Cannibalizing the products themselves.”
Alessio Fanelli Jul 16, 2025 ▶ 15:17 Cline: The Collaborative AI Coder
Prediction Not checkable as stated
Fanelli: 2025 will be the first year AI sets job skill floors
“And I think the skill floor more and more, I think, 20, 25 will be the first year where the AI sets the skill floor of a role.”
Alessio Fanelli Jan 1, 2025 ▶ 1:41:17 2024 Year in Review: The Big Scaling Debate, the Four Wars of AI, Top Themes and the Rise of Agents
Insight
Enterprise buyers want AI digital labor, not AI productivity tools
“Most companies that are buying AI tooling, they want the AI to do some sort of labor for them. And that's why the picks and shovels kind of disinterest maybe comes from a little bit. Most companies do not want to buy tools to build AI. They want the AI, and th…”
Alessio Fanelli Aug 2, 2024 ▶ 1:15:52 The Winds of AI Winter (Q2 Four Wars of the AI Stack Recap)
Opinion
Fanelli: Platform substrates become more valuable as software creation costs fall
“When people are saying, oh, the value of a lot of software is going to zero because you can recreate it. To me, it's almost like the opposite. It's like having an existing platform to build on top of is like even more valuable because they can kind of bolt thi…”
Alessio Fanelli Mar 17, 2026 ▶ 8:46 Anthropic’s Felix Rieseberg on AI Coworkers, Local-First Agents, and the Future of Knowledge Work
Opinion
Fanelli: AI can simulate junior jobs to accelerate engineer training
“I think now we can use AI and these models to actually like shortcut these careers and almost like simulate the early years of your work and like just make them like super dense in like these learnings.”
Alessio Fanelli Mar 17, 2026 ▶ 47:19 Anthropic’s Felix Rieseberg on AI Coworkers, Local-First Agents, and the Future of Knowledge Work
Prediction Not checkable as stated
Alessio: Open-source token share could reach 15-20% excluding coding
“I think once you take coding out, I think, yeah, it can be like 15, 20%, but I think with coding, it's still gonna be very low because like these max plans are like, So subsidized and so many tokens are being generated”
Alessio Fanelli Oct 16, 2025 ▶ 45:47 Why RL Won — Kyle Corbitt, OpenPipe (acq. CoreWeave)
Opinion
Fanelli: AI infrastructure is lagging application demand for the first time
“I think there's this usual, like, VCEO, we should invest in, like, the tools, you know, the picks and shovels instead of the application layer. But I think it's, this is, like, the first time where, like, the infrastructure is lagging the applications.”
Alessio Fanelli Apr 24, 2025 ▶ 14:33 Why Every Agent needs Open Source Cloud Sandboxes
Assertion Supported
Fanelli: Anthropic scrapes 6,000 pages per referral, compared to OpenAI's 250
“Google would be a two to one crawl to referral ratio, so for every two pages, they will read, they will send you one visitor. He said OpenAI is 250 to one, so they'll read 250 of your pages and send you one person. And Anthropic was like 6000 to one. So they'l…”
Alessio Fanelli Apr 24, 2025 ▶ 50:01 Why Every Agent needs Open Source Cloud Sandboxes
Insight
Fanelli: Agents extracting undocumented business processes will unlock enterprise adoption
“The agents are, that most people are building, Are good at following instruction, but are not as good as like extracting them from you. Yeah. So I think that will be a big unlock.”
Alessio Fanelli Jan 1, 2025 ▶ 20:42 2024 Year in Review: The Big Scaling Debate, the Four Wars of AI, Top Themes and the Rise of Agents
Assertion Supported
Fanelli: LangChain and LlamaIndex usage grows on PyPI while CrewAI stays flat
“So if you look at, you know, like chain still growing. These are the last, last six months. Lama index still growing. What I've basically seen is like things that one, obviously these things have a commercial product. So there's like people buying this and sti…”
Alessio Fanelli Jan 1, 2025 ▶ 53:17 2024 Year in Review: The Big Scaling Debate, the Four Wars of AI, Top Themes and the Rise of Agents
Assertion Not checkable as stated
Fanelli: Bolt Generated $4M in Revenue in Its First Four Weeks
“You made four million of revenue in four weeks.”
Alessio Fanelli Dec 2, 2024 ▶ 11:45 0 to over $8M ARR in 2 months as a Claude Wrapper (Bolt.new, Qodo)
Assertion Supported
Reddit makes over 200 million dollars in AI data licensing deals
“Yeah, the, I guess the winner in all of this is Reddit, which is making over two hundred million just in data licensing to OpenAI and some of the other AI providers.”
Alessio Fanelli Aug 2, 2024 ▶ 36:09 The Winds of AI Winter (Q2 Four Wars of the AI Stack Recap)
Insight
Developers will trade 50 milliseconds of latency for higher model quality
“I think the biggest change in this market is like, Latency is actually not that important anymore. Like we lived in the past 10 years in a world where like 10, 15, 20 milliseconds made a big difference. I think today people will be happy to trade 50 millisecon…”
Alessio Fanelli Aug 2, 2024 ▶ 59:10 The Winds of AI Winter (Q2 Four Wars of the AI Stack Recap)
Insight
Fanelli: Personal productivity advantage will come from agent skills, not base AI products
“That almost feels like my personal productivity thing will be my skills. Yeah. It's not really the product that I use because everybody has access to the same product.”
Alessio Fanelli Mar 17, 2026 ▶ 42:33 Anthropic’s Felix Rieseberg on AI Coworkers, Local-First Agents, and the Future of Knowledge Work
Prediction Not checkable as stated
Fanelli: Future AI coworkers will queue cross-departmental decisions for human approval
“And to me, it's almost like in the organization of the future, it's like the salespeople are talking to the engineering team that is talking to the marketing team, to the product team, and all these co-workers are going to like queue up decisions for other peo…”
Alessio Fanelli Mar 17, 2026 ▶ 1:24:11 Anthropic’s Felix Rieseberg on AI Coworkers, Local-First Agents, and the Future of Knowledge Work
Assertion Not checkable as stated
Fanelli: Image and video generation is much more open-source driven than language
“FAL especially has done amazing because media is still very open source driven when it comes to image and video generation. In a way, the language is not as much.”
Alessio Fanelli Aug 6, 2025 ▶ 11:44 The AI Agenda: GPT5 leaks and the business of AI News — Steph Palazzolo, The Information
Insight
Fanelli: Small venture funds cannot back AI inference startups with $5M rounds
“We haven't done any, but also like we have a smaller fund. And I think all of these inference things are like big money. Investments. Like you cannot do a five million dollar round in like an inference company, you know, you kind of need a good chunk of capita…”
Alessio Fanelli Aug 6, 2025 ▶ 12:00 The AI Agenda: GPT5 leaks and the business of AI News — Steph Palazzolo, The Information
Assertion Partly supported
Chroma research finds Claude models lead in long-context utilization
“And you know, one thing Chroma released this context rod paper recently about context utilization and the cloud models are actually the best at using kind of like longer context.”
Alessio Fanelli Aug 6, 2025 ▶ 37:36 The AI Agenda: GPT5 leaks and the business of AI News — Steph Palazzolo, The Information
Assertion Not checkable as stated
Fanelli: Series A Startups Have 80% to 85% AI-Generated Code
“We're hearing a lot of that in our portfolio companies, like, more like series A companies, it's like, 80, 85% of the code they write is ad generated.”
Alessio Fanelli May 7, 2025 ▶ 19:06 Claude Code: Anthropic's CLI Agent
Prediction Held up
Fanelli: Computer use agents will likely automate expense reports within a year
“It's not, you cannot actually do it today, but it feels like a tractable problem, you know, that probably by the end of the year we should be able to do it.”
Alessio Fanelli Feb 1, 2025 ▶ 57:43 The Agent Reasoning Interface: Claude, ChatGPT Canvas, Tasks, Operator — with Karina Nguyen, OpenAI
Insight
Fanelli: OpenAI o1 is a goal-based reasoning model, not a chatbot
“Like O-one is not a chat model. And I think this is both from a usage perspective, but also ties back to some of the training stuff and post training that we already talked about. Like the previous models were so focused on early chat based on, especially on c…”
Alessio Fanelli Jan 17, 2025 ▶ 4:10 OpenAI o1 isn’t a chat model (and that’s the point)

Show 13statements(13 left)

The other half of the tape: Alessio Fanelli's own voice is left out of every number here. Other people bring the name up 66 times in 37 episodes on Latent Space. every mention, with the transcript →

Who brings them up most Shawn Wang 5Swyx (Marcos Swix) 2Jeremy Howard 2Ian Webster 2Varun Mohan 1Swix (Shawn) 1Roger Jin 1Mike Conover 1

Every mention by year

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2025 42 mentions in 21 episodes 2 per episode
2024 19 mentions in 11 episodes 2 per episode
2023 3 mentions in 3 episodes 1 per episode

Appearances (91)

EpisodeDateSpeaking time
Simulating Humanity: from Generative Agents to 8 Billion Digital Twins — Joon Sung Park, S Aug 21, 2026 5m
Next 100x in AI: Inference, Networking, & Self-Optimizing Models — Philip Kiely & Ali Taha Aug 3, 2026 7m
⚡️ Google's Open AI Strategy — Omar Sanseviero, Google DeepMind May 24, 2026 3m
The Agent-Native Cloud: 3M Users, 100K Signups/Wk, Data Centers, & Death PRs — Jake Cooper May 20, 2026 2m
The $15B Physical AI Company: Simulation, Autonomy OS, Neural Sim, & 1K Engineers—Applied Apr 27, 2026 5m
Notion’s Sarah Sachs & Simon Last on Custom Agents, Evals, and the Future of Work Apr 15, 2026 6m
Marc Andreessen introspects on Death of the Browser, Pi + OpenClaw, and Why "This Time Is Apr 3, 2026 4m
Anthropic’s Felix Rieseberg on AI Coworkers, Local-First Agents, and the Future of Knowled Mar 17, 2026 10m
Retrieval After RAG: Hybrid Search, Agents, and Database Design — Simon Eskildsen of Turbo Mar 12, 2026 3m
Measuring Exponential Trends Rising (in AI) — Joel Becker, METR Feb 27, 2026 8m
Inside AI’s $10B+ Capital Flywheel — Martin Casado & Sarah Wang of a16z Feb 19, 2026 2m
The AI Frontier: from Gemini 3 Deep Think distilling to Flash — Jeff Dean Feb 12, 2026 6m
Brex’s AI Hail Mary — With CTO James Reggio (acquired for $5B by Capital One!) Jan 17, 2026 4m
[State of Evals] LMArena's $1.7B Vision — Anastasios Angelopoulos, LMArena Dec 31, 2025 17s
One Year of MCP — with David Soria Parria and AAIF leads from OpenAI, Goose, Linux Foundat Dec 28, 2025 6m
⚡️Jailbreaking AGI: Pliny the Liberator & John V on Red Teaming, BT6, and the Future of AI Dec 16, 2025 4m
The Future of Email: Superhuman CTO on Your Inbox As the Real AI Agent (Not ChatGPT) — Loï Dec 11, 2025 5m
Anthropic, Glean & OpenRouter: How AI Moats Are Built with Deedy Das of Menlo Ventures Nov 14, 2025 5m
The Agents Economy Backbone - with Emily Glassberg Sands, Head of Data & AI at Stripe Oct 30, 2025 3m
⚡ Open Model Pretraining Masterclass — Elie Bakouch, HuggingFace SmolLM 3, FineWeb, FinePD Oct 20, 2025 3m
Why RL Won — Kyle Corbitt, OpenPipe (acq. CoreWeave) Oct 16, 2025 7m
DevDay 2025: Apps SDK, Agent Kit, MCP, Codex and why Prompting is More Important than Ever Oct 7, 2025 3m
⚡️Traversal: Causal ML and Reinforcement Learning Oct 5, 2025 5m
The antidote to AI fatigue — Answer.ai Solveit Oct 2, 2025 6m
Taste is your Moat (Dylan Field of Figma) Oct 2, 2025 12m
⚡️Claude Sonnet 4.5 and Anthropic's roadmap for Agents and Developers — Mike Krieger, Anth Sep 30, 2025 2m
Amp: The Emperor Has No Clothes Sep 25, 2025 18m
⚡️No, Don't Do Palantir for AI - Brendan Falk, Hercules (AUDIO FIXED) Sep 18, 2025 1m
Better Data is All You Need — Ari Morcos, Datology Aug 29, 2025 3m
Long Live Context Engineering - with Jeff Huber of Chroma Aug 19, 2025 3m
⚡️Accelerators @ 3x NVIDIA H200 perf, Made in the USA - Thomas Sohmers + Mitesh Agrawal, P Aug 18, 2025 1m
The AI Agenda: GPT5 leaks and the business of AI News — Steph Palazzolo, The Information Aug 6, 2025 3m
⚡️OpenCode: Claude Code but Open Source, with Any Model, and frontier TUI - with Dax Reed Aug 5, 2025 2m
⚡️Mercury: Ultra-Fast Diffusion LLMs — Estefano Ermon, CEO Inception Labs Aug 4, 2025 1m
⚡️Composio: 10,000+ tools that evolve for Agents — Karan Vaidya and Soham Ganatra Aug 4, 2025 3m
The RLVR Revolution — with Nathan Lambert (AI2, Interconnects.ai) Jul 31, 2025 5m
⚡️Using RFT to Build Clinical Superintelligence Jul 29, 2025 1m
🕰️ The Oral History of Windsurf (ft. Varun Mohan, Scott Wu, Jeff Wang, Kevin Hou, Anshul Jul 28, 2025 9m
⚡️ARC-AGI-3: The Interactive Reasoning Benchmark Jul 18, 2025 2m
Cline: The Collaborative AI Coder Jul 16, 2025 4m
⚡️Ranking Agentic LLMs — Pratik Bhavsar, Galileo Jul 14, 2025 51s
Personalized AI Language Education — with Andrew Hsu, Speak Jul 11, 2025 4m
⚡️Warp 2.0: the Agentic Development Environment - Zach Lloyd and Ben Holmes Jun 25, 2025 2m
The Shape of Compute (Chris Lattner of Modular) Jun 13, 2025 2m
Claude Code: Anthropic's CLI Agent May 7, 2025 8m
⚡️Factorio Learning Environment: the ultimate Game Agent Eval — Jack Hopkins Apr 27, 2025 2m
Why Every Agent needs Open Source Cloud Sandboxes Apr 24, 2025 5m
Sleep-Time Compute — Letta AI (Charles Packer, Charlie Snell, Kevin Lin) Apr 21, 2025 2m
SF Compute: Commoditizing Compute Apr 11, 2025 1m
The Creators of Model Context Protocol Apr 3, 2025 5m
The #1 SWE-Bench Verified Agent Apr 2, 2025 2m
The Agent Network — Dharmesh Shah, Agent.ai + CTO of HubSpot Mar 28, 2025 7m
Fullstack-Bench: The Eval for Coding Agents — with Sujay Jayakar, Chief Scientist, Convex Mar 19, 2025 1m
[Lightning Pod] Evals: How to Improve AI Consistently — with Hamel Husain and Shreya Shank Mar 13, 2025 36s
The new OpenAI Agents Platform: CUA, Web Search, Responses API, Agents SDK!! Mar 11, 2025 2m
Solve coding, solve AGI [Reflection.ai launch w/ CEO Misha Laskin] Mar 7, 2025 1m
How Claude Plays Pokémon was made Mar 4, 2025 4m
Raycast: Your AI Automation Assistant Feb 26, 2025 1m
Why is everyone cloning Deep Research? Feb 18, 2025 3m
Bee AI: The Wearable Ambient Agent Feb 17, 2025 4m
Agent Engineering with Pydantic + Graphs — with Samuel Colvin, CEO of Pydantic Logfire Feb 6, 2025 6m
The Agent Reasoning Interface: Claude, ChatGPT Canvas, Tasks, Operator — with Karina Nguye Feb 1, 2025 4m
Outlasting Noam Shazeer, Crowdsourcing Chai AI w/ 1.4m DAU — with William Beauchamp, Chai Jan 26, 2025 2m
OpenAI o1 isn’t a chat model (and that’s the point) Jan 17, 2025 6m
AI Engineering for Art - with comfyanonymous Jan 4, 2025 2m
2024 Year in Review: The Big Scaling Debate, the Four Wars of AI, Top Themes and the Rise Jan 1, 2025 22m
0 to over $8M ARR in 2 months as a Claude Wrapper (Bolt.new, Qodo) Dec 2, 2024 4m
The new Claude 3.5 Sonnet, Computer Use, and Building SOTA Agents — with Erik Schluntz, An Nov 28, 2024 5m
Why Compound AI + Open Source will beat Closed AI — with Lin Qiao, CEO of Fireworks AI Nov 25, 2024 2m
Agents @ Work: Dust.tt — with Stanislas Polu Nov 11, 2024 4m
In the Arena: How LMSys changed LLM Benchmarking Forever Nov 1, 2024 3m
How NotebookLM Was Made Oct 25, 2024 5m
Singapore: the AI Engineer Nation — with Minister Josephine Teo Oct 19, 2024 4m
Building the Silicon Brain - Drew Houston of Dropbox Oct 18, 2024 7m
Building AGI in Real Time (OpenAI Dev Day 2024) Oct 4, 2024 4m
Language Agents: From Reasoning to Acting — with Shunyu Yao of OpenAI, Harrison Chase of L Sep 27, 2024 6m
The Ultimate Guide to Prompting - with Sander Schulhoff from LearnPrompting.org Sep 20, 2024 5m
Building AGI with OpenAI's Structured Outputs API Sep 17, 2024 7m
Is finetuning GPT4o worth it? Aug 22, 2024 2m
The Winds of AI Winter (Q2 Four Wars of the AI Stack Recap) Aug 2, 2024 21m
Training Llama 2, 3 & 4: The Path to Open Source AGI — with Thomas Scialom of Meta AI Jul 23, 2024 7m
Why Google failed to make GPT-3 -- with David Luan of Adept Mar 27, 2024 4m
Making Transformers Sing - with Mikey Shulman of Suno Mar 14, 2024 7m
Truly Serverless Infra for AI Engineers - with Erik Bernhardsson of Modal Feb 19, 2024 4m
Building an open AI company - with Ce and Vipul of Together AI Feb 8, 2024 6m
The "Normsky" architecture for AI coding agents — with Beyang Liu + Steve Yegge of SourceG Dec 17, 2023 5m
The State of Silicon and the GPU Poors - with Dylan Patel of SemiAnalysis Dec 5, 2023 3m
Powering your Copilot for Data - with Artem Keydunov from Cube.dev Oct 27, 2023 8m
Why AI Agents Don't Work (yet) - with Kanjun Qiu of Imbue Oct 21, 2023 5m
RAG is a hack - with Jerry Liu of LlamaIndex Oct 12, 2023 4m
Ep 18: Petaflops to the People — with George Hotz of tinycorp Jun 20, 2023 7m
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