Co-Founder and General Partner, Touring Capital | Technologist focused on deeptech + software including all things AI

San Francisco
Joined September 2007
Samir Kumar retweeted
This post talks about companies getting to $1M/month which is easy but tenuous. How do you get to $100M/month as quickly as possible so you can thrive? A lot of inference infrastructure needs to be built because the demand is there, but financiers are skittish to underwrite it. The thesis of heterogeneous multi-silicon inference we have at Parasail is to dynamically match requests to the best piece of hardware (both request routing and disaggregated prefill/decode) to get 4-5X more efficiency. This is important because hardware financiers are not clear on how long term dynamics play out with nvidia inference, but they will underwrite a massive improvement in $/MW because you’re no longer in commoditized Nvidia land, payback periods are much faster, and cost of capital impact is blunted.
There is an absolute barrage of inference providers popping up that get to $1M/mo extremely quickly. This is the rough economics of inference providers: Even if you rent on-demand B300s at $8/GPU-hr, many open source models (GLM 5.3, Kimi K3, DeepSeek 4.1 Flash / Pro) can get you >$10-20/GPU-hr at reasonable throughputs (100tok/s). DeepInfer from DeepSeek directly shows they can get $38/GPU-hr on off-peak hours. Every chip / model has a different throughput / interactivity curve, but there is a lot of arbitrage between even high rental spot prices and token prices. New chips (Vera Rubins) also change this meaningfully. Your ability to be making gross margin relies on your utilization and how good your stack is. Gateways like OpenRouter, Vercel and more help solve that problem by aggregating demand to you. May inference providers discount their tokens to get longer term commits too. I've even heard stories of selling back Chinese model tokens to Chinese labs! One thorn in the economics of these players is that many Chinese open source model labs are now asking for rev share if you're at a certain scale, espp for pre-release access to their models for day 1 support. That further pushes the threshold to be in the money. The barrier to entry seems low and falling. There are even stories of smaller ones who can "vibe code" a way to stand up OSS models on a cluster they rent. And as a result, we're seeing 10s of such companies pop up almost every week and immediately skyrocketing revenue at low-ish gross margin and raising rounds on the back of that. Unsurprisingly, because the actual service provided seems commodity, this eventually drives up compute prices and drives down token prices. In theory, it would seem like neoclouds who have the lowest cost of compute and themselves have started inference businesses would win the race to the bottom (Crusoe Coreweave Nebius and GMI all have inference businesses), with larger players (Modal Fireworks Baseten) being second because they are well capitalized to make bigger compute commits cheaply and have demand (high utilization), but the reality is the pie is growing so quickly that even upstarts are absolutely crushing it and growing aggressively (inference dot net, DeepInfra, Wafer, Relace, Morph). Strategies vary across the board: neoclouds want to serve inference, inference players want to be neoclouds and do higher margin reserved instances / post training, and some want to go heterogeneous hardware or creatively flexible compute constructs. The risks are: do open source models continue to be competitive? Will their creators rent seek more? Will their shape change compute needs? How do different chips change economics? Who gets compute in a supply crunch? Below is a aggressive sketch of how gross margin scales with utilization for various models / chip sets. For now, there are many inference providers and they’re all ripping!
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So they finally caught up to Jared. Let’s hope they do something about it.
🤖 Made with AI
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Samir Kumar retweeted
Whoever works on OneDrive search at Microsoft should be fired and possibly tortured on their way out
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So the first thing I'm crazy excited about is the boy genius Elliot Arledge @elliotarledge, the creator of this CUDA course and really a self-made person: someone who eschewed a college-classic education for teaching, as a renegade, state-of-the-art CUDA engineering to millions of people via Free Code Camp. He does kind of 22-hour coding sessions and marathons in a room heated by melting GPUs and is heroically devoting himself to unlocking absolutely every chip's full capacity in the great engineering challenge of Ignition at @infinity_ai_ . There's something to be said for people who continue to pursue greatness in an era where greatness is taboo. Elliot stands proud as a person who I expect will achieve tremendous great things at Infinity and beyond.
timelapse #83 (22 hrs): - it was very easy to dive super deep into anything i needed to (this is what i focused on today because not all days are like this) - finding the grok code fast 1 + grok 4 for deep thinking and verification combo to be super useful in cursor. speed was solid - hard to imagine myself spending many more mental clock cycles in a 24 hr period - had to pull out qwen3-next’s gated deltanet + linear attention from bleeding edge hf transformers to begin implementing a multi-gpu fp8 trainer from scratch. this is so damn bleeding edge and i underestimated how much effort this has and will require lol - lots of diet coke and oats - shipped the template which the core chapters of my book will be built on: github.com/infatoshi/naive.c… - all im missing now is flash attention 1/2 mastery (fa2 tmrw), intuition on making topk faster (for arbitrary row length), what i should and shouldnt teach in cutlass/cute, hopper/blackwell gemm kernel mastery (down to fp4) — shoutout to @pranjalssh for making this easier for me. his blog post is amazing - caught up w/ @matiroy - im feeling great mentally but not so good physically as im writing this and about to pass out
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Samir Kumar retweeted
Proud to have the highest tps on @OpenRouter for @MiniMax_AI M3.1 Flash
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Samir Kumar retweeted
Among the gems that the Dutch government found on Jared Kushner's phone, payments to a known hitman, a warlord, hundreds of millions from bank accounts in Central Asia..on and on..
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Samir Kumar retweeted
The GRU hacked into Jared Kushner's iPhone. Dutch military intelligence (MIVD) then recruited a GRU spy who gave them access to the hacked phone. What MIVD discovered was that Kushner had access to two bank accounts --one Azerbaijani, the other Israeli --where Saudi Crown Prince Mohammed bin Salman and Emirati ruler Mohammed bin Zayed deposited money. It sounds like a slightly far-fetched episode of "Slow Horses," but it's real. And it proves just how eye-poppingly corrupt this administration was and continues to be as its "special envoy" decides the fate of tens of millions in Europe in the Middle East. Simply incredible reporting by Matthew Cole, drawn from his new book on Kushner. vanityfair.com/story/jared-k…
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BREAKING: Jared Kushner’s hacked iPhone revealed that Kushner promised MBS and MBZ he would push their agenda with Trump if they participated in a secret fund, with the two royals initially discussing over $10 billion before ultimately placing at least $2 billion into accounts for him, according to a Vanity Fair excerpt from Princes and Thieves. The revelation lands as Kushner remains deeply involved in Iran war diplomacy, while Tehran has separately accused him and Steve Witkoff of pocketing $9 billion through market manipulation.
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Samir Kumar retweeted
We launched the first Engineering World Model, SKY-001, this week and it already outperforms all the frontier LLMs in CAD and BIM in speed, cost and precision. Here’s an example of how our model compares to OpenAI’s Astra, Anthropic’s Fable 5.1 and Google’s Gemini 4. These results did not happen by accident. Read our technical blog to find out how we built SKY-001 (🔗 below).
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Samir Kumar retweeted
Effective Immediately, all organizations using PHP for their systems are advised to be prepared for an update addressing two critical vulnerabilities. PHP is widely used for web applications. These vulnerabilities often provide a direct path to the server's file system or database. If an immediate update is not feasible, it is recommend that organizations take the system offline until it can be fully mitigated. NSA will follow up shortly with more specific guidance.
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Samir Kumar retweeted
Introducing rl-env-use: RL environments for anyone, in any domain. Describe a skill in one line. Get a verified environment built from real cases, ready for hillclimbing. 100% open source 🔥
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AI agents are writing more code. How can developers ensure that code is correct? Microsoft Research’s Proof-Driven Development (PDD) Kit explores a more rigorous approach: it translates a developer’s intent into a formal specification, then uses formal verification to prove that generated code meets it. PDD Kit works with Verus for Rust and is integrated with @GitHubNext’s Chopin, bringing formal methods into an AI-assisted development workflow for teams. See the work in action at @github Universe, Oct. 28–29, 2026.
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While designing complex physical objects via CAD, frontier LLMs try to brute-force engineering through text tokens and inevitably buckle under compounding error pile-up. SKY-001 operates as a true spatial World Model. It plans directly in the 3D space, recursively breaking complex designs down to the smallest part, then re-assembling everything while keeping every step globally consistent. That’s how it leaves GPT-6 Astra, Gemini 4 Argon, and Claude Fable 5.1 behind on complex CAD workflows. Here’s a side-by-side look at a Jaguar E-type sports car and a Ducati Cafe Racer:
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in the 1800s the mathematician Georg Cantor asserted there is no halfway house between one level of infinity and another via his Continuum Hypothesis. @JvNixon and the @infinity_ai_ team aren’t building a middle ground for efficient AI, they’re engineering the leap and just getting started 😎🏎️ Congrats Jeremy and team!
Who builds the fastest AI? Whoever wins at automated research. That’s why top F100 companies like @Nvidia and @HP are coming to @infinity_ai_ . Infinity Autoresearch hit 2x token throughput for Nemotron 3 Super on the HP ZGX Fury (GB300). Here’s how we generate ∞ speed:
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OpenAI’s new proof of the quasi-Riemann hypothesis is, as Jared Duker Lichtman of Stanford University put it, “the most significant AI-for-math achievement so far, by quite a margin.” quantamagazine.org/ai-proved…
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Samir Kumar retweeted
This is a very big deal. DeepSeeks inference system is on par with OpenAIs stack and better what Anthropic is running (at least for their user size).
🚀 Introducing DeepInfer, our in-house inference framework, now fully open source! Powering DeepSeek-V4.1-Flash at scale with high throughput and low latency. We’re sharing our production stack to help the community lower compute costs, reduce energy use, and make AI more affordable. 🔗 github.com/deepseek-ai/DeepI… 1/4
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Samir Kumar retweeted
There are about a thousand single-photon sources and superconducting single-photon detectors in this picture. We’re going to double the number of sources per chip in the next revision
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one of the coolest demos i have seen recently. well done @skyfallai !
Introducing SKY-001, the first Engineering World Model. On CAD and BIM tasks, it beats GPT-6 Astra and every frontier model we tested: -> 51-125x faster - > 150-210x cheaper -> Higher IOU than all frontier models SKY-001 lets you dream a physical object before you build it. 18 months of work. Built by the team out of Maluuba's deep learning lab (acq. by @MSRResearch). The first ‘AI General Engineer’ will be the backbone for Autonomous Manufacturing.
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