The A.I. Daily
Yuchen Jin@Yuchenj_UW
throw a brick in SF and you’ll hit: 50 inference providers 80 RL environment startups 4090 dudes brokering GPUs
Yuchen Jin
98 storiesYuchen Jin is an AI practitioner who posts on X about AI engineering practice and industry trends. Recent posts cover his team's AI-native workflow, where AI writes 95% of their code and an agent was built to handle PR reviews, plus commentary on Gemini 4 Carbon topping the Artificial Analysis index ahead of Opus 5.5 and GPT-6 Astra, Snowflake's model lineup, and OpenAI doubling subscription usage limits.
Yuchen Jin@Yuchenj_UW
Saw a dude coding in a terminal on SF Caltrain. Felt like watching someone use a typewriter in 2026. Terminal wasn't built for the age of AI agents.
Yuchen Jin@Yuchenj_UW
heard in Silicon Valley: Security researchers will soon make more than AI researchers.
Yuchen Jin@Yuchenj_UW
finally, OpenAI is doing something right. The OpenAI vs. Anthropic subscription war is less about who has the best model, but more about who offers the most tokens per $. [Quoting @thsottiaux]: Day 25/ We are doubling all usage limits for all Pro 100/200/500…
Yuchen Jin@Yuchenj_UW
Crazy convo with a friend today: “Remember that super fast inference engine we built for image models?” “Yeah, a year ago.” “Dude, we wrote the WHOLE thing by hand.” Holy shit. Just ONE year ago.
Yuchen Jin@Yuchenj_UW
Ali and Sridhar (Snowflake CEO) are having their Kendrick vs. Drake moment on X. To our friends at Snowflake: we'd love to onboard you to Unity Gateway and our AI products. No hard feelings. But your latest DeepSeek model is 3 months old. We ship OSS models o…
Yuchen Jin@Yuchenj_UW
According to Artificial Analysis, Gemini 4 Carbon is both smarter and cheaper than Opus 5.5 per task. My only caveat: they benchmarked Gemini 4 Carbon using Antigravity CLI. I haven't touched Antigravity in months, and I'm not eager to install it... Will try…
Yuchen Jin@Yuchenj_UW
Are we entering another “Google is back” cycle? Google’s new model Gemini 4 Carbon beats Opus 5.5 and GPT-6 Astra on most benchmarks and ranks #1 on the Artificial Analysis Intelligence Index v5. Let’s see if it can shake up Anthropic’s IPO.
Yuchen Jin@Yuchenj_UW
I'm so glad AI killed LeetCode-style coding interviews. I've talked to young AI talent, and most would simply skip companies that still use LeetCode interviews. I agree with Felix. Taste, empathy, principled thinking, business sense, and agency are what reall…
Yuchen Jin@Yuchenj_UW
The real 1-person billion-dollar company. A solo smart, high-agency CEO + AI can have an outsized impact on the world. [Quoting @AnthropicAI]: Over the past few months, Anthropic scientists have engaged in deep research partnerships with six organizations dev…
Yuchen Jin@Yuchenj_UW
Every day I ask myself: “Is my team AI-native enough?” My rule: If AI can do it, humans shouldn't touch it. AI already writes 95% of our code. But PRs still get stuck waiting for approvals. I asked: “Do those reviewers actually read the code? If not, why not…
Yuchen Jin@Yuchenj_UW
2023: GPT-4 almost solved grade-school math 2024: IMO silver 2025: IMO gold 2026 May: Erdős unit-distance conjecture 2026 Sep: Navier–Stokes Millennium Prize Problem solved 2026 Oct: 722 AI-written math manuscripts Today: OpenAI proves ETH is false Tomorrow:…
Yuchen Jin@Yuchenj_UW
“if you value intelligence above all other human qualities, you’re gonna have a bad time” Aging like fine wine.
Yuchen Jin@Yuchenj_UW
I previously argued that terminals and IDEs are the wrong interfaces for coding agents. Phones used to be even worse for coding. Typing is slow, screens are tiny, and navigating a codebase is impossible. But we’re no longer writing code by hand. So the iPhone…
Yuchen Jin@Yuchenj_UW
“That means the 200+ neoclouds are going to see guppy-level death and consolidation.” If neocloud stocks tank on Monday, I may have accidentally accelerated the guppy-level death...
Yuchen Jin@Yuchenj_UW
People ask: “Are you dunking on neolabs?” Most neolabs will fail. That’s normal. But I believe more AI breakthroughs are coming. I’m skeptical of those following the same playbook as OpenAI and Anthropic. Raising $1B and spending 50% on GPUs doesn’t make you…
Yuchen Jin@Yuchenj_UW
Elon just ruined the mood for all my neolab and neocloud friends out there.
Yuchen Jin@Yuchenj_UW
Heard from a neolab friend: “Even if we fail to train the best model, we locked in GPU capacity early. H100/B200/B300 rental prices have since gone up 2–3x. We can just resell the compute and print money.” OK, so that’s the business model.
Yuchen Jin@Yuchenj_UW
Kimi K3.1 Pro ranking #4 on Artificial Analysis’ Intelligence Index across ALL models, including Claude Opus 5.5, Fable, and GPT-6 Astra, is absolutely wild. Open source is so back. 💪
Yuchen Jin@Yuchenj_UW
Kimi K3.1 Pro is out! should be the strongest OSS model now. It beats Claude Opus 5.5 on Terminal-Bench 4.0 at ~1/3 the cost!
Yuchen Jin@Yuchenj_UW
It's pretty bad out there (cyberattacks). People complain about AI writing slop code. But our software and internet infra run on 50 years of human-written slop. Even dumb AI models today are becoming powerful hacking tools. The race is on: defenders need to f…
Yuchen Jin@Yuchenj_UW
Security teams quitting after a day of nonstop incidents and giving AI root access to every repo:
Yuchen Jin@Yuchenj_UW
Claude Muse is coming. tbh I’ve installed 10 personal agent apps on my phone, can do 1 more. [Quoting @claudeai]: We’re opening a research preview of Claude Duet, a new app where Claude works as a proactive agent. It comes to you with what needs your attentio…
Yuchen Jin@Yuchenj_UW
just in the past few days: - LiteLLM hit by another supply chain attack - PHP critical vulnerabilities (discovered by GPT-5.6 Sol!) - OpenCode hacked - eMudhra compromised AI is making hacking faster and cheaper. The only way to fight back is also AI.
Yuchen Jin@Yuchenj_UW
My entire job at Databricks: Step 1: Buy a sh*tload of GPUs Step 2: Read DeepSeek blogs Step 3: Profit [Quoting @Yuchenj_UW]: “A single cluster currently serves 155 trillion tokens/day, generating $38 in revenue per GPU-hour (at off-peak pricing).” Huge flex…
Yuchen Jin@Yuchenj_UW
“A single cluster currently serves 155 trillion tokens/day, generating $38 in revenue per GPU-hour (at off-peak pricing).” Huge flex from DeepSeek. Not only did they open-source their inference engine, but they also open-sourced their revenue numbers. They di…
Yuchen Jin@Yuchenj_UW
Real Open AI. [Quoting @deepseek_ai]: 🚀 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…
Yuchen Jin@Yuchenj_UW
The fastest way to hit $100M ARR: Company A's agent sends Company B $10 every 3 seconds. Company B's agent sends the same $10 right back. Boom. Two $100M ARR unicorns!
Yuchen Jin@Yuchenj_UW
Make it exist first. Make it good later. Done is better than perfect.
Yuchen Jin@Yuchenj_UW
Amazon, Delta, and JPMorgan Chase are blocking AI agents. Remember when Steve Jobs initially refused to allow 3rd party iPhone apps? Later, Apple launched App Store. It made the Apple ecosystem wildly successful. You can't stop a tech revolution. Adapt or get…