LoungeLounge
HomeMembersEventsLearnIntelligence
/
Log inSign up free
428members$1.36Bcombined ARR$1.7Braised$2.17Bin exits
The AI Founders & Builders Lounge428 members·4 online now·$1.36B combined ARR·$1.7B raised·$2.17B in exitsInvite an AI Founder
For YouNewsInvestmentsExitsResearchPodcastsNewslettersVideos
© 2026 LoungeAboutSuggest a featureSponsor the LoungePricingTermsPrivacy
For You
Following
Trending
Projects
Polls
Asks & Offers
Saved
Spaces
IntroductionsQuestionsAdviceAgentsModelsInfraVibe-codingGTMFundraising & ExitsAudio & videoDataSecurityUpdates
HomeMembersEventsLearnIntel

Member Map

Open map
Lounge Profrom $37/mo
Unlock the masterminds and the higher-tier groups
  • ✓The Weekly AI Founder Mastermind, Thursdays 11 AM CT
  • ✓Investor Contacts and CSV exports
  • ✓Deals, investors, the Revenue Leaderboard and every perk
Become a paid member →
7-day free trial · cancel any time

This week's events

All
THU
22
Weekly AI Founder Mastermind
11:00 AM CT · Zoom · 30 min · 0 going
Lounge ProUpgrade
Add your city to see in-person AI meetups near you here.
The Weekly AI Founder Mastermind is every Thursday at 11 AM CT, 30 minutes on Zoom. Join us!

Trending this week

All
  1. 1
    Hi, I'm Renier, building bespoke AI products and agents in London
    ▲ 2 · 1 comments · Introductions
  2. 2
    Shipped: Website Visitor Deanonymization
    ▲ 2 · 2 comments · GTM
  3. 3
    Shipped: Artemis GTM agents
    ▲ 2 · 0 comments · GTM
  4. 4
    What we shipped today
    ▲ 2 · 0 comments · Updates
  5. 5
    If ChatGPT ran on a desktop, how much would the world change?
    ▲ 2 · 0 comments · Introductions

Asks & Offers

Board
Need an intro, a vendor, a second opinion? Post an ask. Have something to give? Post an offer.
Post an askPost an offer

Invite an AI Founder

Lounge is invite-only. Your code brings in 10 more builders, and you earn 25% of everything a referred member pays, for life.
YOU
Your referral link & who joined →
For paid members
9,724 AI investor contacts, ready to reach
Key partners at 2,066 firms investing in AI: name, title, verified email, LinkedIn and phone. Filter by role, firm type and country; export the ones you want as a CSV.
9,724
Contacts
2,066
Firms
7,348
With email
Ko Narushima
Principal
Rakuten Capital logoRakuten Capital
Kayla Tausche
Managing Director
RedBird Capital Partners logoRedBird Capital Partners
Jason Kirschner
Managing Partner
Footpath Ventures logoFootpath Ventures
Get access →Preview
Venture Rounds
Open →
Mueon logoMueonSeries A · Oct 15$65MDougs logoDougsGrowth equity · Oct 15$58MHolyvolt logoHolyvoltVenture round (equity) · Oct 15$45MModal logoModalSeries D · Oct 14$750M
Exits
Open →
Varonis Systems logoVaronis SystemsAcquired · Oct 15$6.3BAISLE logoAISLEAcquired · Oct 15—Proscia logoProsciaAcquired · Oct 13$240MC1.ai (formerly ConductorOne) logoC1.ai (formerly ConductorOne)Acquired · Oct 13—
428 members in 174 cities
Top AI Shorts
Open →
The Best AI Gets Out of the WayLenny's PodcastDeepSeek Painted My PortraitMatthew BermanAI ISN'T KILLING JOBS20VCMeta's Cute New A.I. Agent Is Taking Over My BrainHard ForkChamath: 3 Things Every Company Needs in the Age of SuperintelligenceAll-In Podcast
Top AI Stocks
Open →
Nvidia logoNvidia$5.25T-1.8%Apple logoApple$4.99T-0.3%Alphabet logoAlphabet$4.27T+0.5%Microsoft logoMicrosoft$4.01T+1.1%Amazon logoAmazon$2.75T+0.3%
Videos · Models · newest first
All 248Agents 41Vibe-coding 40Models 40Infra 39Audio & video 34GTM 30Fundraising 24
Videoa16zModels
Recursive Self-Improvement and the Future of AI
An a16z discussion of recursive self-improvement and what it could mean for how frontier labs and builders plan ahead.
Oct 12 · 32:07
VideoTwo Minute PapersModels
DeepSeek Solved AI’s Memory Problem
A short, clear explainer on DeepSeek's latest approach to the long-context memory problem. Good for a quick view of the technique.
Oct 11 · 5:38
VideobycloudModels
DeepSeek-V4.1 Flash: The Most Insane Optimization So Far
A technical look at the efficiency tricks behind DeepSeek-V4.1 Flash and why they matter for serving cost and long-context performance.
Oct 10 · 25:04
VideoCognitive RevolutionModels
How Agents Decide: Goodfire's Eric Bigelow on Critical Tokens, Phase Shifts, & In-Context Learning
Goodfire's Eric Bigelow explains how models decide, covering critical tokens, phase shifts and in-context learning, in a long interpretability deep dive.
Oct 10 · 2:00:51
VideoAI EngineerModels
How MiniMax M3 Was Built: Sparse Attention and Native Multimodality — Olive Song
An inside look at how MiniMax M3 was built, covering its sparse attention design and native multimodality, from someone on the team.
Oct 10 · 15:03
VideoNo PriorsModels
Beam: The Great American Open Model with ReflectionAI Co-Founder and CEO Misha Laskin
Reflection AI CEO Misha Laskin on Beam, the lab's new American open-weight frontier model, and why open models matter for builders and national competitiveness.
Oct 9 · 1:10:49
VideoStanford OnlineModels
Stanford CME295 Transformers & LLMs | Autumn 2026 | Lecture 2 - Large Language Models
Lecture 2 of Stanford's Autumn 2026 CME295 Transformers & LLMs course covers how large language models are built and trained, straight from the classroom.
Oct 9 · 1:43:15
VideoNo PriorsModels
Beam: The Great American Open Model with ReflectionAI Co-Founder and CEO Misha Laskin
ReflectionAI's CEO discusses Beam and the push for a leading American open-weights model, straight from the lab building it.
Oct 9 · 1:09:45
VideoTheo - t3.ggModels
finally a good small model
Theo's long hands-on look at a new small model, covering where it holds up and where it falls short for real builder workloads.
Oct 9 · 41:11
VideoWorldofAIModels
Claude Haiku 5.5 Is a GAME CHANGER! 90% CHEAPER & INSANE Performance! (Fully Tested)
First hands-on test of Claude Haiku 5.5, Anthropic's new small model that cuts API prices about 90% while keeping coding and computer-use strength.
Oct 8 · 19:09
VideoNick SaraevModels
I Spent $700 Testing Haiku 5.5 vs Sonnet 5.5 vs Opus 5.5
A $700 head-to-head of Haiku 5.5, Sonnet 5.5 and Opus 5.5 on real automation and coding tasks, with cost-per-task numbers you can use to pick a tier.
Oct 8 · 32:48
VideoThe AI Daily BriefModels
The Best Way To Test New AI Models
A long, practical look at how to evaluate new models yourself instead of trusting launch-day benchmarks.
Oct 8 · 46:37
VideoSam WitteveenModels
Microsoft Joins the Local AI Push
Sam Witteveen breaks down Microsoft's new local models and what the growing on-device push means for builders who want inference off the cloud.
Oct 8 · 13:29
VideoLatent SpaceModels
AI Scientists Are Here: Autonomous Labs & Synthesis Superintelligence — Periodic Labs
A long interview with Periodic Labs on autonomous labs and AI scientists, useful for seeing where model-driven discovery is heading.
Oct 8 · 1:25:21
VideoNVIDIA DeveloperModels
Evaluating Open Models with Artificial Analysis | Nemotron Labs
Artificial Analysis and NVIDIA walk through how to evaluate open-weight models properly, including benchmarks and tradeoffs.
Oct 7 · 55:35
VideoBijan BowenModels
Claude Haiku 5.5 Is INSANE – This IS the BEST Cheap Model Yet!
Bijan Bowen puts Claude Haiku 5.5 through 30 minutes of hands-on tests to show where the cheap model actually holds up against the bigger ones.
Oct 7 · 31:27
VideoClaudeModels
What's new in Claude: September recap
Official 2.5-minute recap of everything Anthropic shipped in Claude in September, a fast way to catch up.
Oct 7 · 2:38
VideoFireshipModels
A $6.3 billion open-weight model just got embarrassed by the French...
Fireship's six-minute rundown of this week's open-weight race: Mistral Large 4 versus Reflection AI's and Moonshot's new releases.
Oct 7 · 6:10
VideoMatthew BermanModels
Mistral is BACK! (Le Chonk)
Matthew Berman digs into Mistral Large 4, Mistral's return to the frontier, with benchmarks, pricing and what it means for open-weight model builders.
Oct 7 · 21:29
VideoOpenAIModels
Introducing GPT-6 in ChatGPT with Intelligent UI
OpenAI's official launch of GPT-6 in ChatGPT alongside Intelligent UI, which answers with interactive, generated interfaces instead of plain text.
Oct 7 · 1:11
VideoOpenAIModels
Introducing the Decisions API
Official OpenAI launch of the Decisions API: hand the model an input plus a fixed set of answers and use its fast choice to route leads, classify images and steer voice…
Oct 6 · 5:34
VideoBijan BowenModels
Mistral Is BACK – Mistral Large 4 First Test (Le Chonk!)
Bijan Bowen puts Mistral Large 4 through a thorough first-test battery of coding, reasoning and agentic tasks to see whether Mistral is back in the frontier race.
Oct 6 · 38:50
VideoGoogle for DevelopersModels
Introducing EmbeddingGemma 2: An open model for natively multimodal embeddings
Google DeepMind introduces EmbeddingGemma 2, a 740M-parameter open model that embeds text, images, video and audio in one space for fully on-device search and RAG.
Oct 6 · 3:10
VideofreeCodeCamp.orgModels
Build & Train a GLM-5.3-Flash Model From Scratch with Python
Full hands-on course building and training a GLM-5.3-Flash-style multimodal model from scratch in Python, covering tokenization, MoE, sparse attention and RL…
Oct 6 · 44:26
VideoThe AI Daily BriefModels
America's Open Model Comeback Is Starting
An analysis of the renewed push for US open-weight models and what it means for builders choosing open models.
Oct 6 · 23:33
VideoIndyDevDanModels
OpenRouter State Of Models: Jev, Open-Weights, and Tokenomics
IndyDevDan reads OpenRouter's state-of-models data to show which models agentic engineers are actually paying for, how Jev and open-weights are shifting usage, and what…
Oct 5 · 26:09
VideoSam WitteveenModels
Which is The Best Qwen3.8-27B?
Side-by-side tests of the new Qwen3.8-27B variants to work out which open-weights checkpoint to actually run for coding, reasoning and agent work.
Oct 4 · 21:19
VideoCognitive RevolutionModels
One Brain, Any Body: Google DeepMind's Keerthana on Gemini Robotics 2, Cross-Embodiment & Humanoids
A DeepMind researcher explains Gemini Robotics 2 and cross-embodiment learning, a deep dive on how one model can drive many robot bodies.
Oct 3 · 1:30:54
VideobycloudModels
How Can A Model Be Better Without Generating Words?
Clear explainer of latent-reasoning models that think in continuous space instead of tokens, and why that changes the cost and quality trade-off.
Oct 2 · 17:51
VideoLatent SpaceModels
Recursive Language Models — Alex Zhang, MIT PhD
A deep dive with the MIT researcher behind Recursive Language Models on how models that call themselves over long contexts beat plain scaling on hard tasks.
Oct 2 · 1:43:25
VideoAI ExplainedModels
OpenAI Security: Controlling Models is Now ‘Hell’
AI Explained digs into OpenAI's security disclosures on frontier models escaping sandboxes, plus Gemini 4 Argon and recursive self-improvement, with his usual…
Oct 1 · 38:29
VideoSam WitteveenModels
Gemini 4 Argon
Sam Witteveen's hands-on first look at Gemini 4 Argon, Google's new frontier model, covering its huge output window, coding strength and what it means for builders on…
Oct 1 · 10:11
VideoMatthew BermanModels
How Did Anthropic Pull This Off?
Matthew Berman breaks down how Claude Sonnet 5.5 lands so close to Opus-class performance and what the release means for agent builders choosing a default model.
Sep 29 · 17:00
VideoNate Herk | AI AutomationModels
I Tested Sonnet 5.5 vs Opus 5.5. What You Need to Know.
Nate Herk runs Sonnet 5.5 and Opus 5.5 head-to-head on real automation and coding tasks so you can decide when the cheaper model is enough.
Sep 29 · 25:49
VideoOpenAIModels
OpenAI DevDay 2026 Keynote (FULL)
OpenAI's full DevDay keynote: new models, API capabilities and agent tooling. Worth watching alongside the Anthropic keynote to see where the two platforms diverge.
Sep 29 · 53:35
VideoTina HuangModels
Every Size Local AI In 24 Minutes
Tina Huang walks through which local open-weight model to run at every hardware size, from a laptop to a multi-GPU box, with concrete setup and speed comparisons.
Sep 28 · 24:23
VideoClaudeModels
Code with Claude Tokyo 2026: Opening Keynote
Anthropic's developer keynote: the current Claude model lineup, what changed for agents and coding, and the roadmap for the API and Claude Code. The clearest official…
Jun 11 · 42:25
VideoKevin StratvertModels
Claude Skills Tutorial (2026): Build, Run, and Share
How Claude Skills work and how to package your own repeatable workflows so the model does them the same way every time. Practical, beginner-friendly, and directly…
May 27 · 14:32
VideoClaudeModels
Code with Claude London 2026: Opening Keynote
The London edition of Anthropic's developer conference: model updates, Claude Code and Agent SDK demos, and customer builds on stage.
May 19 · 46:27
VideoSequoia CapitalModels
Anthropic's Boris Cherny: Why Coding Is Solved, and What Comes Next
The creator of Claude Code on how frontier models changed software engineering, what 'solved' actually means, and what builders should do with the slack. A Sequoia AI…
May 4 · 24:36