Guido Appenzeller @appenz
At a16z investing in AI & Infra. 2x founder & CEO. CTO at Intel & VMware. CPO at Yubico. Tweets are my own. guido.appenzeller.net Silicon Valley, CA Joined January 2008-
Tweets4K
-
Followers10K
-
Following286
-
Likes4K
Great article by @extrabrunch on Netris. GPU cloud networking really is different (and hard). techcrunch.com/2026/06/25/net…
@abenik @netris_io @alex_saroyan Yup, building networking management/control planes does not happen over night.
Super excited to announce that we are leading the Series A in @netris_io. Every technology cycle changes the underlying infrastructure. And Netris has build the Networking Software Stack for AI. We are excited to partner with @alex_saroyan, Arsen Arakelyan and Tigran Martirosya! a16z.com/announcement/i…
Netris has raised its $15 million Series A, led by @a16z. Guido Appenzeller (@appenz) led the round and is joining our board, with fellow a16z partners Martin Casado (@martin_casado) and Raghu Raghuram (@RaghuRaghuram) behind the investment. Together, they're the team behind the network virtualization that reshaped the modern data center — Nicira, NSX, VMware. They solved networking for the data center. Netris is doing it for AI. Eight years ago, that bet looked wrong. We believed the network would become the hardest problem in computing, and that nobody outside the hyperscalers had the tools to solve it. The hyperscalers had built that automation for themselves — armies of engineers, custom systems. Everyone else was stuck. So we built a platform to put it within reach of any operator. Most investors didn't see it. Most of the industry didn't either. But the operators actually running networks did — they started choosing Netris long before AI was on anyone's roadmap. Then the AI buildout hit, and the network became the bottleneck for the entire industry. A single GPU cluster runs across multiple network fabrics at once — Ethernet, InfiniBand, NVL72 — each with its own control plane, spanning hundreds or thousands of switches. None of it was built to work as one, and the automation tools that came before were never designed for it. One misconfiguration can take an entire cluster down. It was the exact problem we'd spent years solving — and the platform was already built for it. Netris automates network operations across every fabric and delivers true multi-tenancy through hard isolation (enforced on networking hardware). Operators can now run shared GPU clouds, maximize GPU utilization, and provision new tenants instantly. In the last 12 months, Netris experienced 800% ARR growth and reached 35+ live deployments and growing — more live deployments than all other network automation vendors combined. The largest AI clouds in the world have chosen Netris: neoclouds, sovereign AI operators, and AI factories. Huge thanks to the Netris team, our customers, investors, @nvidia, and our ecosystem partners, including @MirantisIT, @rafaysystemsinc, @RedHat, @spectrocloudinc, @vclusterlabs, and @HPE. The AI buildout is just beginning. Netris has been ready for this for eight years. Read the press release: netris.io/blog/andreesse…
@SemiAnalysis_ This would be a lot funnier if there were not for the number of start-ups that have pitched they will do this. Raise seed, tape-out after 9 month, first deliveries after 12. I want to believe, but chips are hard!
Congratulations Matic Team!
@maticrobots Free marketing for your robots on Reddit 😁 This is why home robots need to be vision based. reddit.com/r/shittyrobots…
This is kind of cool. Amazing how Sandboxes have evolved from a mini-VM to an management primitive for agents and tools.
This is misunderstanding AI. It’s an infrastructure technology that will be used by everyone. When the CPU (in the 70s) or the internet (in the early 90s) proliferated, you could have written the same about home computer use or early web browsers. How it’s a choice, and some will use it some won’t. But that’s not what happened. Infrastructure technologies become ubiquitous. Everyone uses CPUs and networking today. The may just no longer notice.
No, everyone is not using AI for everything. gabrielweinberg.com/p/people-are-c… People are consuming AI like they eat meat: some are embracing it, some are limiting their use of it, and some are avoiding it altogether.
@pollenrobotics If you sign up for the Pollen Robotics Discord, you get a message that new accounts are read-only for a specific amount of time. You make users with a defective product wait to even file a claim.
@pollenrobotics Asking your customers to submit warranty claims via Discord, and then disabling posting on your Discord for new accounts is a bit of a dick move. Is this is the reputation you want to build?
@Bensign Yeah, Jetstream is doing funny things today.
It's silly how the @arena and @ArtificialAnlys leaderboards for open-weights image generation differ right now. - @ideogram_ai is #1 vs. #8 (really?) - @nvidia Cosmos is #8 vs. #1 - @bfl_ai is #3 vs #6 I may be biassed, but @arena seems a lot closer to reality.
There are good examples what happens if you don’t do this. I grew up in Germany and in the late 1980s/early 1990s it was illegal to operate private modems on the phone network. You had to rent them, and cost was prohibitive. The early ISPs (e.g. Subnet e.V. In Karlsruhe) had members live in fear of police showing up to confiscate their illegal modems. It seems silly today, but back then it inhibited Internet growth and Germany never caught up to the US.
Flash-KMeans was only the beginning. Today, from the Flash-KMeans team, we are releasing FlashLib — a GPU library for fast, predictable, agent-ready classical ML operators. Up to 26× on KMeans, 19× on KNN, 40× on HDBSCAN, 208× on TruncatedSVD, 47× on PCA, 147× on exact t-SNE, and 49× on MultinomialNB over state-of-the-art (cuML). Blog: flashml-org.github.io Code: github.com/FlashML-org/fl…
Welcome to the team, Han Wang! Han joins as VP of Engineering, bringing expertise in computational mathematics, national security, and cybersecurity, with hands-on experience leading large-scale engineering infrastructure from Lawrence Livermore National Laboratory to the U.S. Army Reserve Cyber Corps. Han also co-founded YC-backed Upfort and most recently served as Head of Engineering, Infrastructure at Numeral. His expertise comes at a pivotal moment: as we build the infrastructure to train and scale our foundation models like Pearl, having the right engineering leadership in place is critical. Learn more and explore our open roles: genesis.ml/careers
Pat Gelsinger @PGelsinger
2.4M Followers 159 Following Values are most enduring thing leaders create. Engineering pioneer, proud grandfather, philanthropist, Christian, farm boy at heart.
William Lam @lamw
37K Followers 463 Following Distinguished Platform Engineering Architect @Broadcom • 📢 Customer Advocate • 🧑💻 Technologist • 🖊️ Blogger • 👨👧👦 Father • 🧗♂️ Spartan Races
Keith Townsend @CTOAdvisor
26K Followers 503 Following CTO Turned Advisor | Helping Vendors Resonate and IT Leaders Execute. Engage with my virtual twin https://t.co/7fh1X8hbEJ. Independent Advisor.
Sanjay Poonen @spoonen
39K Followers 3K Following CEO & President @ Cohesity | Board of Philips, Snyk | Tech Investor | Christian, Immigrant | Loves Faith, Family, Technology, Leadership, Sports & Music
Raja Koduri @RajaXg
54K Followers 2K Following Create, Clean, Consume is my aspirational routine. My interests math, computer graphics, silicon, software and music.
J8y @JoeBaguley
10K Followers 3K Following CTO EMEA, Broadcom : Tech, EVs (Road & Track), Motorsports (Trustee @MissionMotorspt), Energy, Science, Sustainability, Fireworks, eMTBs, Gadgets
Tim Davis 🌮 @vtimd
9K Followers 5K Following DevRel Things 🥑 | #vExpert Pro, #W5VT📡 🎸 🍖 🏋️🤿 ⛳️ He / Him. #wehackhealth
BradTompkins_ @BradTompkins_
3K Followers 2K Following @InnovatisGroup | @MyVMUG Executive Director | @VMUGAdv | #vExpert 2017-2026 | Speaker | South Carolinian | @UofSC Alumni
Bjoern Brundert (inac... @bbrundert
3K Followers 3K Following find me on Bluesky: https://t.co/xEAytdCdcW
Tim Smith @tsmith_co
5K Followers 3K Following Professional homelabber and Certified Vibe Coder. I like to explore new technologies. Principal Solutions Architect @Veeam
Russell Hamker (@butc... @butch7903
3K Followers 2K Following VMUG Leader, SysAdmin. Automation Enthusiast. VMware vExpert and Tanzu Vanguard. VCP-VMC 2023, VCP-DCV 5-2022, VCAP-DCV 2022, MCSE, CCNA Tweets are my own.
Jon Masters 🏴�... @jonmasters
16K Followers 7K Following Troublemaker | Computer Architect | @Arm Servers Architect @Google | Previously @RedHat, @Nuvia_Inc | Runner | Author | All views my own | #ArmServers
Sean O'Dell @theseanodell
3K Followers 2K Following Too Conservative & Too Liberal | DevEx PMM | Tweets=Mine | Christ Follower, Husband, Dadx3 | ENTP | 8w7 | Flawed, Broken, Redeemed | He/Him
Rose Schooler @RoseSchooler
3K Followers 2K Following Beach lover. Sports fan. I 💙 Penn State. Peloton obsessed. Board member. Loving this wonderful world.
Christian Mohn™ @h0bbel
5K Followers 1K Following Chief Technologist @ Proact | Norwegian | Currently clean on OPSEC | I own my own opinions.
Rebecca Lipon Weekly @rebeccalipon
2K Followers 557 Following VP Infrastructure @ GEICO, HW nerd, Lead Singer @sindexband, Running addict
Victor Wu 🇨🇳 �... @umacboyvictor
2K Followers 2K Following Chief Technical Architect at 🇨🇳 🇲🇴 @vExpert 1️⃣3️⃣⭐ @CiscoChampion🏆, @VeeamVanguard🛡 @VinchinSoftware MVP🏅@Kubernetesio CKA
Jing(Heidi)Wu @Jaxon_Elara
3 Followers 112 Following
HappyQQ_AI @HappyQQ_AI
19K Followers 8K Following 为 AI 飞速发展助力,打造 AI 相关的好用的软件平台。 公众号:移动互联网 | 微信号:HappyQQ_AI。 AI开发交流Discord社区:https://t.co/yNQuB0qZRC
Elvis @Elvis23338540
21 Followers 455 Following
Steve Hou @stevehou
56K Followers 5K Following Head of Research @Silicon_Data. @UMICH/@ETH_en/@UVA alum. Perpetually curious, but also "incredibly unsophisticated" (according to Chamath Palihapitiya)
Almighty Sonoxo @AlmightySonoxo
69K Followers 66K Following 12x Silver 📀 Musician @distrokid @Twitch Affiliate Partner(s) @youtube @MetaElevate @BeatClub @wearesona_ @medium @soundcloud - psych @snhu @kick - Dev
Giovanni Lesna @giolesna
765 Followers 1K Following AI & Emerging Tech Strategist - Management Consultant | Partnerships
Aparup @aparup
2K Followers 880 Following Growth Engineer @hyperbrowser (YC S21) | Diving deep into ML. Building useful tools for humans.
Ganesh @_ganesh_kencha
6 Followers 848 Following
Everardo Gómez Leal @evgomezleal
398 Followers 2K Following Dad, golfer, and bicultural 🇲🇽 🇺🇸. Currently @walliancebank, ex @humcapital, @producepay, @svb, @Wellsfargo
Gero Gerber ᯅ @gerogerber
742 Followers 2K Following Developer of @meetoryapp. Focused on iOS, visionOS and Augmented Reality. Ex @ubisoft and @EA on @SplinterCell and @AssassinsCreed
Alex Brinsmead @AlexBrinsmead
286 Followers 2K Following
Matthew Snowden @mattsnow2026
128 Followers 5K Following Founder of Ten Sixty AI, no.1 AI video & ad content platform for real estate Ex-Founder of Australia's first Bitcoin Venture Fund (Anti Hero Capital)
Garrett @Garrett85927008
0 Followers 6 Following
Jon Jones | Supra @JonEvansJones
8K Followers 1K Following Co-Founder & CBO at Supra | #1 Verifiable Agent Memory - https://t.co/wM0DmKv5Fi - verifiable memory for agentic AI | blockchain × AI
恐龙博士🦖🦖�... @No_tariff3
11K Followers 2K Following 大厂算法工程师 Weex alpha最佳人气奖 okx aiagent双榜20+Bg aiagent第4 币安:https://t.co/LuIKY26exX 欧意:https://t.co/9HkwWVCCF7 ✈️:WARD999999
Luminosity @unixarcade
571 Followers 5K Following Luminosity Symbolmancer #Btc 3BVJ5aXNzFXUbFe8PRhH1PfFXSiUjEeMsK
Sebto @VSebto
818 Followers 133 Following توییت های شما در حوزه نرم افزار، تاریخ، ایران و جهان رو میخونم و چیزهای دیگه ... قدری هم شاید بنویسم.
Paul Morszeck @PaulMorszeck
40 Followers 2K Following
Anurag Sharma @anurshar16
50 Followers 865 Following Co-Founder at Substance. check us out —- @substance_corp | Veteran advocate
MAKA$ @MakassjakaMaks
3K Followers 3K Following Collect the Future. Storyteller in motion. @Wallchain Quacker. @TheoriqAI special agent.
Oximoron @el_oximoron
373 Followers 3K Following “The only true currency in this bankrupt world is what you share with someone else when you’re uncool.”
Leonardo Sanelli @sanellileonardo
1K Followers 616 Following Investing at Francisco Partners. Prev @Stanford, @McKinsey. I used to make tech reviews on YouTube
Antonios G. Manessis ... @ToneManessis
114 Followers 5K Following Shareholder @ https://t.co/1mUfb4E6qu 🇬🇷 https://t.co/TBEkOs4Etk FOUNDER @CHotel55 * @betcafe & @SpiderWebTime U: @IsenbergUMass & @UMassCHC 🇺🇸 Surfer
Samski @OdenSokrates
3K Followers 3K Following Crypto bro since 2020 | Sharing BTC wallets & chasing free crypto via apps | AI & DeFi enthusiast | Stacking sats @Oden91 on Substack @samsk.ee on IG
A77 @A77Mury
248 Followers 4K Following
Benjy Boxer @boxerbk
1K Followers 512 Following I'm the co-founder of @phaze_in and previous co-founder of @parsecteam
Karan Ganesan @karanganesan
10K Followers 4K Following • founding engineer at luma ai (@lumalabsai) • prev at flipkart camera, scapic • an eclectic person interested in technologies of the future
nobdy @nobdy112873
0 Followers 1 Following
3x Capital @capital_3x
4K Followers 658 Following Investment firm partnering with founders from idea to scale.
Andrey @Andrey405296279
0 Followers 54 Following
Yuanzhi @yuanzhi_zhu
365 Followers 1K Following PhD Student in École Polytechnique Currently interested in generative model. Opinions are my own.
szymon @szdziedzic
630 Followers 582 Following AI infra @expo, prev @google @swmansion opinions are my own
Nguyen Thi Anh Duong @anhduong_hotx
2K Followers 4K Following Talent Acquisition & Growth Advisor https://t.co/TpMTStz2rt
pari @rahimi__behnam
303 Followers 5K Following
Jeronimo Enciso @JeroEnciso
2 Followers 93 Following
Fernando Reyes @FernandoRe7g
17 Followers 2K Following
Pat Gelsinger @PGelsinger
2.4M Followers 159 Following Values are most enduring thing leaders create. Engineering pioneer, proud grandfather, philanthropist, Christian, farm boy at heart.
Aaron Levie @levie
3.0M Followers 816 Following ceo @box - your business lives in content. unleash it with AI
𝐷𝑟. 𝐼𝑎�... @IanCutress
56K Followers 1K Following Consultant, Chief Analyst, Influencer. Substack: https://t.co/yEtnDropHp (@MoreThanMoore2x) Youtube: https://t.co/1t9pRrV860 (@TechTechPotato)
Raja Koduri @RajaXg
54K Followers 2K Following Create, Clean, Consume is my aspirational routine. My interests math, computer graphics, silicon, software and music.
Dylan Patel @dylan522p
140K Followers 1K Following SemiAnalysis Boutique AI Infrastructure Research and Consulting DMs are open for consulting, quotes, or to talk shop, Opinions my own
Mitchell Hashimoto @mitchellh
207K Followers 147 Following Creator of Ghostty. 👻 Prev founded @HashiCorp, created Vagrant, Terraform, Vault, and others.
Rebecca Lipon Weekly @rebeccalipon
2K Followers 557 Following VP Infrastructure @ GEICO, HW nerd, Lead Singer @sindexband, Running addict
Jennifer Rexford @jrexnet
4K Followers 734 Following Provost @Princeton, Professor @PrincetonCS and @EPrinceton, affiliated with @PrincetonCITP, computer networking researcher, and mom. 🏳️🌈
Motonori Shindo / 進... @motonori_shindo
1K Followers 1K Following 外資スタートアップ数社を経た後、ファイブ・フロントを設立しCTOに就任。その後Nicira(VMwareが買収)に入社、ネットワーク仮想化に従事。続いてViptela(Ciscoが買収)に入社、SD-WAN市場の開拓にあたる。2018年VMware(Broadcomが買収)に戻る。2026年よりフリー。講演・執筆多数。
Michael Dell 🇺🇸 @MichaelDell
4.5M Followers 4K Following Husband, Father, Grandfather, Brother, Founder, Chairman and CEO Dell Technologies Grateful 🇺🇸 #PlayNiceButWin https://t.co/3JiGiLQq1C
𝖙𝖒𝖆𝖗𝖙�... @tmartiro
136 Followers 99 Following
Alex Saroyan @alex_saroyan
686 Followers 223 Following Enabling Multi-Tenant AI & Cloud Operators. CEO, co-founder @netris_io. Advocate for NetOps/DevOps/Kubernetes, Linux, and Networking. Hacker, dad, RC jet pilot.
Louis Anslow @LouisAnslow
5K Followers 6K Following Building https://t.co/8pRAzsdPWi to move us beyond cursor and keyboard • Curator of @PessimistsArc • Software Imagineer • Email: louis@hey. com
Chenfeng_X @Chenfeng_X
2K Followers 1K Following Incoming Assistant Professor @UTCompSci, PhD @UCBerkeley. Working on something really works
Richard Socher @RichardSocher
120K Followers 1K Following Building self-improving superintelligence CEO @recursive_si and @youdotcom MP @aixventuresHQ Ex: Stanford Adj Prof, Chief Scientist at Salesforce, CEO MetaMind
OSINTtechnical @Osinttechnical
1.7M Followers 924 Following PAI enjoyer, OSINT guy @hntrbrkmedia, my views/freezing cold takes are my own. For full disclosures, visit https://t.co/JOtQx4pI3e.
UFB - Ultimate Fighti... @UFBots
93K Followers 19 Following 🤖 Humanoid sports league 🥊 Robots fight and dance. Engineers and pilots compete. 🌉 Season 1 in SF this summer. Follow to get tickets
Gavin Baker @GavinSBaker
254K Followers 6K Following Managing Partner & CIO, @atreidesmgmt. Husband, @l3eckyy. No investment advice, views my own. https://t.co/pFe9KmNu9U
Cassandra Unchained @michaeljburry
1.9M Followers 33 Following Official X account for Michael Burry, MD, called "Cassandra" by Warren Buffett. Now on Substack with the full story.
Evan Feinberg @enfeinberg
1K Followers 170 Following Founder & CEO, https://t.co/JvqkTU20qB / Scientist developing deep learning methods for drug discovery / Pande Lab @ Stanford. Applied Physics @ Yale.
Genesis Molecular AI @genesismolai
420 Followers 0 Following Pioneering the world’s leading molecular AI models for drug design and development
Mirelo @MireloAI
1K Followers 210 Following Context-aware sound effects and music generated straight from your visuals. Sound on. 🎵 https://t.co/zAYWws8wmI
tobi lutke @tobi
476K Followers 2K Following Shopify CEO by day, Dad in evening, hacker at night, Aspiring comprehensivist. + qmd !
Jason Cui @JasonSCui
4K Followers 1K Following Partner @a16z investing in infra & AI | Prev product @databricks & @uber, founder at Jemi (YC S20, acq) | Technology optimist ☀️
amit @gravicle
13K Followers 5K Following you're not talking to someone who woke up a loser ceo @LumaLabsAI working on multimodal AGI | prev: built Vision Pro at | everything is figureoutable
Igor Babuschkin @ibab
110K Followers 884 Following CEO & Co-Founder @river_ai_inc. Previously @xAI, Research & Engineering
near @nearcyan
174K Followers 1K Following allow yourself to introspect and realize what was lost: twitter will never return to what it once was. close your phone; think about how you now spend your life
Simon Willison @simonw
194K Followers 6K Following Creator @datasetteproj, co-creator Django. PSF board. Hangs out with @natbat. He/Him. Mastodon: https://t.co/t0MrmnJW0K Bsky: https://t.co/OnWIyhX4CH
Erik Torenberg @eriktorenberg
158K Followers 4K Following General Partner @a16z. Positive-sum. Striving for a thousand year heart.
swyx 🔜 @aiDotEngin... @swyx
170K Followers 4K Following achieve ambition with intentionality, intensity, integrity & insanity. affiliations: - @dxtipshq - @cognition - @temporalio - @aidotengineer - @latentspacepod
spark @sparkjsdev
6K Followers 1 Following Three.js-native 3D Gaussian splatting renderer Docs/examples @ https://t.co/paCxUjmG9B | Github @ https://t.co/afLJjWD6zO | Discord @ https://t.co/tdbgq3nHbd
Dan Carpenter @dbcarpenter
254 Followers 488 Following GM, Uber AI Solutions. AI hardware and tech platforms. Unapologetic wine snob. Go Cougs!
SemiAnalysis @SemiAnalysis_
114K Followers 27 Following
Arfur Rock @ArfurRock
40K Followers 5K Following anon GP at your favorite multi-stage VC // OS intel for the private markets
Sophia Yang, Ph.D. @sophiamyang
34K Followers 2K Following Head of Developer Relations @MistralAI | Board of @NumFOCUS
Omar Khattab @lateinteraction
36K Followers 3K Following asst professor @MIT CSAIL @nlp_mit. https://t.co/VgyLxl0VZz, https://t.co/ZZaSzaRIOF (@DSPyOSS), GEPA, RLMs, Pedagogical RL
Pete Koomen @koomen
13K Followers 2K Following GP @ycombinator, cofounded @optimizely https://t.co/5hkCw4y95d
Karan Dalal @karansdalal
7K Followers 381 Following
eric zakariasson @ericzakariasson
76K Followers 586 Following @cursor_ai & tinkering. https://t.co/udyDUjFI0i




































