Ankit Gupta
@GuptaAnkitV
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general partner @ycombinator. co-founder of @reverielabs (acquired). @harvard CS. 🫶 to @lucylnam.
Cambridge, MA
Joined November 2015
@HarryStebbings @ycombinator @garrytan @t_blom @a16z @martin_casado @kirbyman01 @seema_amble not enough people are talking about @sdianahu Reducto, David AI, Salient… all crushing it
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Visiting the hacker houses of the most hardcore companies I’ve worked with is incredibly energizing
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The Other Tom Green Show | Episode 7 with @karlmecklenburg
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For startups looking to mitigate payment/account fraud, check this out:
My team at Stripe is sprinting on an integration to provide risk and abuse insights at non-payment times, including login and registration. We see this impact revenue at both startups and enterprise, especially free trials. If you’re interested in co-building, reach out!
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My favorite thing about YC: every YC partner is a former YC visiting partner, and every visiting partner is a former YC founder. And we still write code.
Y Combinator has 9 new alums to work with us to find, fund, and advise tomorrow's best founders I am blown away at how smart, talented, giving, and experienced this set of all-star people are.
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I’m thrilled to announce @reductoai’s $75M Series B led by @a16z, which brings our total funding to $108M. Just five months after our Series A, we've surpassed 1 billion pages processed and grown our monthly volume 6x. We now process hundreds of millions of pages every month for
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Privacy is driving the pivot from ChatGPT to Doctronic. We don’t train on your data, we don’t sell it, we don’t see it (unless you want to see one of our licensed doctors)! You own it. Trust isn’t a feature, it’s the foundation.
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I am on the job market this year! My research advances methods for reliable machine learning from real-world data, with a focus on healthcare. Happy to chat if this is of interest to you or your department/team.
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good lord this team ships fast
You wanted shadcn — so we built the heinous infra to make it work. Introducing Agent Arena, starting with the best: Claude Code by @AnthropicAI Codex 5 by @OpenAI Cursor Agent by @cursor_ai Devin by @cognition Gemini CLI by @GoogleDeepMind Grok Code Fast 1 by @xai 1/ Your
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Introducing: The fastest web agent in the world⚡[ bu 1.0 ] We built a special LLM that reduces the latency by 6x while keeping the same performance. The agents can now take 20 steps per minute. How many can a human do? 👨‍💻 ⚡Go give it a try. It feels crazy⚡ Read the comment
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just woke up to find we're #1 trending on GitHub! what a wild ride - and awesome to see 3 YC teams up there together!
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Instruction-based art gives us a rare opportunity to ask whether it is the idea that defines good art, and if models can capture it. Conceptual art was pioneered by Sol LeWitt, whose work took the form of instructions rather than completed pieces. Today, we introduce
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I'm excited to share we're shipping a new model router at @mastra_ai today! Use 600+ models from 45 providers with a single API 🧵
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Nick and I have been friends since college and worked together at a startup after graduation. So fun to come full circle with an old pset partner and dive into his latest work.
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In the video, Nick describes how he thinks about the challenges in pre-training, its evolution from Anthropic’s founding days, and where opportunities lie ahead.
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with Claude Sonnet 4.5 now out, excited to share a conversation I had with with @nickevanjoseph, the head of pretraining at Anthropic. (more context in thread)
Ever wonder what it actually takes to train a frontier AI model? YC's Ankit Gupta (@GuptaAnkitV) sat down with Nick Joseph (@nickevanjoseph), Anthropic's Head of Pre-training, to explore the engineering challenges behind training Claude—from managing thousands of GPUs and
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Ah so that’s what he’s been up to 👀👀
One of our products I’ve been heads-down focused on recently. Today, we launched the fundamental APIs for agentic commerce and integrated best-in-class fraud prevention directly into the flow. Excited to see how consumers and businesses use this going forward!
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Meet Stamp: the first AI Secretary. Stamp handles your emails and calendar for you. Works 24/7. Tailors itself to you. And it costs as much as a happy meal.
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"AI isn't replacing radiologists" good article Expectation: rapid progress in image recognition AI will delete radiology jobs (e.g. as famously predicted by Geoff Hinton now almost a decade ago). Reality: radiology is doing great and is growing. There are a lot of imo naive
In 2016 Geoffrey Hinton said “we should stop training radiologists now" since AI would soon be better at their jobs. He was right: models have outperformed radiologists on benchmarks for ~a decade. Yet radiology jobs are at record highs, with an average salary of $520k. Why?
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super cool to see this team release their first dataset from excavators in construction sites
✨✨ Announcing Open Source Dataset from excavators in real construction sites retrofitted by @flywheel_inc! ✨✨ This 100hrs of observation+action data enables training autonomy models for excavators. We were able to train a small task model from 6 hours of dataset on a
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may the best builder win. cast your vote today
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