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Andrej Karpathy joins Anthropic
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Braid Daily · 2026-05-20

Andrej Karpathy joins Anthropic

The single highest-status engineer-researcher available on the market in 2026 looked at the frontier and picked Anthropic over Google, OpenA

The lead

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The single highest-status engineer-researcher available on the market in 2026 looked at the frontier and picked Anthropic over Google, OpenAI, or going independent. For builders, that's a calibration on where pre-training compounds fastest right now.

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Primary signals

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DeepSeek is forming a Code Harness team

@victor207755822 (Deli Chen) on X

A year ago 'agent harness' was a research term. Now it's a hiring category at every major lab — and DeepSeek admitting they need one publicly is the cleanest signal that the model alone is no longer the product.

“DeepSeek is forming a new Harness team to build Code Harness from the ground up — may be you can call it DeepSeek Code or something like this hhh.”

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Ethan Mollick on recursive self-improvement and talent gravity

@emollick on X

Mollick gives the structural reason the Karpathy news matters beyond a single hire: if recursive self-improvement is real, the Big Three become talent sinks faster than the outside ecosystem can spin up rivals.

“One interesting side feature of recursive self-improvement, to the extent that is happening, is that it makes the Big Three labs more appealing to talent, and shortens the runway for launching a potential competitor instead at the same time.”

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Supporting links

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Google I/O 2026: Gemini 3.5 Flash, Omni, Spark, and Antigravity 2.0

latent.space

The full I/O numbers in one place — pricing, benchmarks, demo scale — so the keynote can be evaluated against what was actually shipped versus shown on stage.

“Gemini 3.5 Flash priced at $1.50 / 1M input, $9.00 / 1M output tokens, with 90% discount on cached input. 4x faster than comparable frontier models; up to 12x faster in Antigravity.”

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Demis Hassabis: "foothills of the singularity" at Google I/O

prismnews.com

DeepMind's CEO is normally the conservative voice on AGI timelines. When he compresses, that recalibrates investor and engineer expectations across the field.

“When we look back at this time, I think we will realize that we were standing in the foothills of the singularity.”

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Incident Report: May 19, 2026 — GCP Account Suspension

blog.railway.com

While Google was pitching Spark and Antigravity 2.0 on stage — both of which want more of your workload to live on Google Cloud — its automated account-suspension system was taking a whole PaaS down for eight hours. That tension is the day's real cost story.

“Railway owns our vendor choices, and we ultimately own this one. Your customers don't care whether the failure was Google or Railway; they see your product.”

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Learnings from 100K Lines of Rust with AI

zfhuang99.github.io

The most concrete builder ground-truth for what serious AI-assisted systems work looks like in 2026. Not a 93-agent stage demo — a senior architect with a tight contract regime, two paid subscriptions, and a Paxos engine that actually runs.

“I pay $100/month for Anthropic's max plan. This became a forcing function — if I don't kick off a coding task with Claude before bed, I feel like I'm wasting money.”

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Companion episode

Foothills, and the morning Karpathy moved

· 00:23:26

Today's full Braid dispatch is up on the site — every link above ran past the editorial agent before it landed here.