Marc @uzinfinity
@xAI | prev. VC @ActivantCapital, DS @penn | views are my own Joined August 2016-
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Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency. x.ai/news/grok-4-5
Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus. RL is continuing to significantly improve the model, and the Grok Build harness gets better every day. Nice work by all those involved! Completely trained from scratch new models will be released by @SpaceX every month this year.
𝕏 Money begins rolling out to a subset of Premium+ users today. It already has a ton of great features and perks. Here's an in-app welcome preview we cooked up with some of what's included...
Today, we're releasing @XMoney to a subset of US Premium+ users to collect feedback and iron out issues ahead of a broader launch. As appreciation for being an early user, we're extending our internal perks to this group for a limited time. Notifications going out now!
@uzinfinity @tferriss That one is in the book also!
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Today, @SpaceX (Nasdaq: SPCX) makes its public market debut with a $75Bn offering (pre-greenshoe) at $135 per share, marking the largest IPO in history. Congratulations to the SpaceX team. We are honored to serve as joint lead bookrunner and sole stabilization agent.
Try out X API + Grok with OpenClaw! Here’s a tutorial video by @AlexFinn who’s been building with X API for over a year now. Official tutorial coming next week in collaboration with @openclaw team.🦞
OpenClaw + the X API is a match made in heaven It's an incredible way to stay on top of what's trending in the world, plus even make better content and go viral In this video I show you how to use OpenClaw to connect to the X API and 2 use cases that will blow your mind:
What makes the API update interesting
The 𝕏 API just got a massive update that completely changes the game for AI agents and builders 𝕏 is the most real-time platform on Earth, and with the 𝕏 API, you can leverage this real-time data to build your applications The new capabilities are actually insane: •
Upgrades to our API
We’ve made major upgrades to X API: • Pay-Per-Use now GA worldwide • XMCP Server + xurl for agents • Official Python & TypeScript XDKs • API Playground - free realistic simulations New releases coming will be a game changer. Start building → docs.x.com 🚢
We’ve made major upgrades to X API: • Pay-Per-Use now GA worldwide • XMCP Server + xurl for agents • Official Python & TypeScript XDKs • API Playground - free realistic simulations New releases coming will be a game changer. Start building → docs.x.com 🚢
We offered 5 people a Porsche 911 GT3 RS if they could get @WisprFlow to make a mistake It's the fastest and most accurate AI voice dictation app that's 3x more accurate than ChatGPT, Claude, or Siri. Today, we’re finally launching on Android. Download now: play.google.com/store/apps/det… As a part of the launch, we’re giving away 6 months of Wispr Flow Pro for free. Like, retweet and comment ‘Wispr Flow’ to get it. Enjoy. — Written with Wispr Flow
@danwwang On "no finish line": - US leads platforms but hollowed manufacturing (25% → 12% share) - China leads manufacturing but faces demographic cliff + chip dependency - Germany leads niches but energy costs ~3x US
@danwwang On long-term ecosystems: - US: Capital depth (64% global VC) + talent magnet - China: Manufacturing density + state scale. Full stack from rare earths to EVs - EU (Germany): Precision + standards. ASML monopoly, hidden champions
@dvdsgl This is great! Adding to my CRM agents in CC
Ricardo Vice Santos @ricardovice
2K Followers 95 Following 👩🏼👦🏼👶🏼 + 🚀 prev @spacexai @nekohealth @kenckofoods @spotify
Grace Kay @graceihle
2K Followers 2K Following Reporter @TheInformation | I write all things Tesla and SpaceXAI | Bylines @businessinsider, @business, @forbes, @michigandaily | Tips via Signal at gracekay.11
Blake Jenkins @jblakej5
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James - Flippity @flippityflop44
126 Followers 877 Following Car Enthusiast. Energy, Technology, Sustainability, Speed. Engineer @xAI | ex-@Meta | ex-@Tesla
GDP @bookwormengr
15K Followers 11K Following AI model & hardware co-design, Inference economics Exploring the design space of all possible AI hardwares that can lead us to AGI All views strictly personal
Resource Swarm Reacto... @ResourceSwarm
130 Followers 1K Following The Omniscaler Nexus Model – A Complete Regenerative Civilisational Operating System. Built with @Grok ecosystem inc images.#omniscaler #aquaforge #weaver
Dee McComas @MccomasDee1963
60 Followers 2K Following rebel cowgirl ...rainbows are God's Promise not whoever hacked me
Kal @lovablia
74 Followers 3K Following Vibecoding with agents is clearly the future embrace it. Founder of Lovablia
notasnowflakeschance @notasnowflaks
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Red @adabatohc
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Aaditya Bansal @AadityaCodesAI
92 Followers 879 Following Quality Assurance Engineer @SpaceXAI working on Grok @imagine
ENJOYOOR ⛾ @jup_enjoyoors
2K Followers 5K Following Your NUMBER 1 source of independent journalism and VIRAL news here on @X .
Nick Celt @Nicholascelt
907 Followers 898 Following AI Artist & Storyteller. Building the epic fantasy world of Nick Celt ⚔️. Videos, art, and adventure, all powered by AI. Follow the saga!
Adam Lowisz X Meetup ... @AdamLowisz
55K Followers 7K Following Organizing Adam's X Meetups and other events. Click follow! Visit https://t.co/UMpXgz27hD for the next event. Volunteer and help @ElonMusk make X a force for good
Sriram Viswanathan @1sriram
2K Followers 1K Following GP at @CelestaCapital. All things VC, deep tech, AI, quantum, and the otherwise geeky. Host @techsurgepod.
poh @poh0903
271 Followers 6K Following
Mikkel @Mikkel86881951
179 Followers 5K Following
JoySong @JoySong_J
2K Followers 3K Following 🖊️ Writing about AI | Cooking @commonstack_ai & @Gradient_HQ | Angel Investor | Ex-@ABCDELabs,@Bybit_Official,@IBM |@Chill_DAO 🏖️ | @Penn & @UCSanDiego 🎒
SAI RAM @rsai31385_ram
31 Followers 5K Following I am an engineer on a mission to create technologies that excite and inspire the world and beyond...............⚙️🤖💻🛸🚀
Dave Morin 🦞 @davemorin
527K Followers 4K Following General Partner @OfflineVentures • Chairman @Esalen • Board @OpenClaw • Founder @Slow @Path • Early @Apple @Facebook • Skier • Dad of 3
beeboop @beeboopx
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David Zhou @rectifiedzhou
334 Followers 5K Following serving humans for good ai, ml, infra @imbue_ai
Ronghang Hu @RonghangHu
1K Followers 3K Following multimodal at @SpaceXAI | previously at @Meta FAIR
Jacob @jacoblin84
0 Followers 209 Following
Inbar Kodesh @inbarkodesh
9 Followers 29 Following
Andrew Steele @ac_steele
338 Followers 235 Following team @activantcapital /partner to @owner; @airwallex; @tines_hq; @sardine; @stuutai; @trypallet; @ekhohq; @cardless; @micro1_ai; @adapt; @getmetronome; @dreamer
BeverlyCopperfield @U73bB9y992Tjx7
187 Followers 6K Following
BeverlyLouisa @u8u7ip0xovitRHI
159 Followers 6K Following
Ikleermie @Ikleermie89843
41 Followers 867 Following 🌟 ambitious girl with a knack for tracking Nasdaq trends! open to insights. Chat value stocks via DM! 💡 #Nasdaq #Stocks
Logan Kilpatrick @OfficialLoganK
341K Followers 3K Following Member of technical staff, working on Gemini, @GoogleAIStudio, the Gemini API, & Kaggle. My views!
Dinghuai Zhang 张鼎... @zdhnarsil
7K Followers 2K Following coding RL bigrun @xAI @SpaceXAI. Prev: @MSFTResearch / @Apple MLR / FAIR Labs @MetaAI, PhD at @Mila_Quebec, math undergraduate at @PKU1898.
SpaceXAI @SpaceXAI
2.0M Followers 5 Following
Mihir Anand @mihiranand
3K Followers 403 Following @spacexai, building the everything app. prev: @stanford, https://t.co/sz7Lj3M1Vu.
X Money @XMoney
343K Followers 1 Following
Ricardo Vice Santos @ricardovice
2K Followers 95 Following 👩🏼👦🏼👶🏼 + 🚀 prev @spacexai @nekohealth @kenckofoods @spotify
Ming @mingsong
6K Followers 2K Following I write code to count numbers, to draw charts, and to tell stories.
sridhar @RamaswmySridhar
35K Followers 623 Following CEO @snowflake; founder @neeva Ex-@GreylockVC Ex-@Google SVP of Ads Ex-@BellLabs.
mars @marsBuilds
855 Followers 36 Following AI deployment @Cursor_ai | prev @google @microsoft Indie Game Developer
skcd @skcd42
37K Followers 322 Following Understanding the universe @xai ex hacking @aide_dev ex fb engineer ICPC WF its just code 👨🏼💻
Kai-Fu Lee @kaifulee
1.3M Followers 692 Following #AI Expert, CEO of @01ai_yi and Chairman of 创新工场 @sinovationvc, former President of Google China, Author of AI 2041 and NYT Bestseller AI Superpowers
Shicheng Liu @ShichengGLiu
329 Followers 360 Following Knowledge agents w/ LLMs @Databricks Final-year CS PhD @StanfordNLP @IBMResearch Fellowship Recipient Prev: @AIatMeta @UChicago
Michelle Sun @michellelsun
7K Followers 737 Following Research on the Physical AI stack: hardware, models, deployment MIT CSAIL, Forbes 30 Under 30
Abi Go @abigoabi
79K Followers 228 Following It's me Abi | Global Marketing @Xiaomi | Loves tech | Make the ordinary extraordinary | Views are my own
James - Flippity @flippityflop44
126 Followers 877 Following Car Enthusiast. Energy, Technology, Sustainability, Speed. Engineer @xAI | ex-@Meta | ex-@Tesla
SemiAnalysis @SemiAnalysis_
135K Followers 27 Following
GDP @bookwormengr
15K Followers 11K Following AI model & hardware co-design, Inference economics Exploring the design space of all possible AI hardwares that can lead us to AGI All views strictly personal
Bret Johnsen @BretWJ
4K Followers 25 Following
Tianyi Cui @tianyi
15K Followers 452 Following Member of Technical Staff @ DeepSeek, Harness Team I'd love to connect with members of international frontier LLM labs! DM is open. Opinions are my own.
OpenAI Developers @OpenAIDevs
374K Followers 1 Following Official updates for developers building with Codex & the OpenAI Platform • Service status: https://t.co/kZwnwdYYEq
Antonio Gracias @AntonioGracias
56K Followers 437 Following Founder and Managing Partner, Valor Equity Partners
Clark Tang @_clarktang
13K Followers 454 Following investing @ altimeter // be humble, never stop learning // no investment advice all views personal
Ethan He @EthanHe_42
38K Followers 707 Following ex world model lead @xAI | ex @Nvidia @Meta | 30+ papers, 9k citations | talk about AI, LLM, video generation, multimodal, AGI
Zac Valles @zacharyvalles
6K Followers 436 Following Setting the new standard for health tracking @Fort. Prev Cybercab @Tesla Starlink & Raptor @SpaceX.
Yiwen Yuan @yiwenyuan98
7K Followers 154 Following @xai | prev @kumo_ai_team (acquired by @nvidia) @palantirtech @CarnegieMellon
Thariq @trq212
312K Followers 2K Following Claude Code @anthropicai. prev YC W20, @southpkcommons, @medialab
indigo @indigox
54K Followers 1K Following Co-founder of https://t.co/WosXbyLukR / Partner of Brilliant Phoenix / ex-Weibo. Investor, Writer, Coder, Gamer & Amateur Cook. e/acc, 𝕏 is my notebook …
Zeeshan Patel @zeeshanp_
11K Followers 807 Following @prometheusinc | prev @xAI grok imagine / video pretrain, research @nvidia @apple @berkeley_ai | views my own
Monique Pintarelli @Monique_X
10K Followers 891 Following Head of Global Advertising @X. Work hard. Love deeply. Live beautifully.
Grace Shao @Gracemzshao
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Brian Balfour @bbalfour
37K Followers 313 Following Founder/CEO @ https://t.co/4AweBUVK4U (@reforge) Advisor @ https://t.co/sE5dEYSdC3 (@LongJourneyVC) I write @ https://t.co/me2dXouqh4
Jeff Pu @sssjeffpu
34K Followers 50 Following Tech Enthusiast. 20 years tech equity research + industry.
Dhruv Batura @dbatura
10K Followers 596 Following @XMoney. Previously: Finance @X, Finance @Tesla, @Penn engineering
David Autor @davidautor
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Philippe Aghion @Ph_Aghion
26K Followers 142 Following Professor at College de France, INSEAD and LSE. 2025 Nobel Prize in Economics. Account managed by my students at @cdf1530 to share news, not opinions.
Daron Acemoglu @DAcemogluMIT
364K Followers 330 Following Institute Professor @MIT, @MITEcon. Co-Director of @MITShapingWork. Author of Why Nations Fail, The Narrow Corridor, and Power & Progress.




































