Explore models

Analyzing an exported brokerage account to count yearly trading decisions

"I had this idea where we basically exported his brokerage account, and we put it in Claude, and we asked it over the last 12 years, how many decisions did you make a year?"

Sam Parr

Running daily automated SEO guide creation and writing all code and web content

"I use extensively Codex and Claude... but I will say at this point, 99% of the stuff that is left to be done is Claude waking up every morning and then running the guide, and that's kind of it."

Rasty Turek

Rewriting and updating an old academic dissertation with current information

"So I had ChatGPT rewrite her dissertation that she wrote 20-something years ago, but everything is now current... She was like, 'This is amazing. What AI is this?' And I'm like, 'It's ChatGPT.'"

a16z

Fact-checking and research

"Oh my god, you kids have it good now. I love ChatGPT and Claude and so on. It's so much easier. You need to know how to interrogate the system."

Tim Ferriss

Writing long-form articles, such as an 8,000-word piece

"I used it for writing all weekend and it is without a doubt my favorite new writing model. It beats Astra, which was my previous favorite. It definitely beats Claude. It has an incredibly good feel for structuring information and I used it all weekend to wr..."

Dan Shipper

Medical research and turning interview transcripts into newsletter posts

"I think really pleasantly surprised by how good Gemini 4 did at doing medical research, answering the questions that I had... for something like medical questions, I actually do want something that's super well researched. And that combined with its improve..."

Peter Yang

Running AI agents independently on local hardware for AI sovereignty

"OpenClaw is a vote on making agents that are independent. If you use OpenClaw with Neotron or Gemma, which is Google's open source product, you will be sovereign AI. In other words, the AI running on your Mac Studio with 256 gigs of RAM."

This Week in Startups

Powers Jim, Brex's AI recruiting employee; also powers Pedro's personal 'autopilot' life management system that ingests Slack, email, and meeting notes

"This is Jim. Jim is our OpenClaw recruiter. It runs on effectively like a three-stage pipeline. We do use OpenClaw for this but the harness doesn't really matter as much as just the skills. I have this system that I call autopilot and basically what it does..."

Pedro Franceschi

Coding agents and AI-assisted development workflows internally at ClickHouse

"Our Anthropic spend is up 100 times from what it was at the beginning of the year. I sent an email to the company and the subject was 'the AI awakening' and I said I think we're moving too slowly and I'm not seeing the adoption of these coding applications ..."

Aaron Katz

Business logic automation, workflow automation, coding agents

"We're using OpenAI, using Anthropic. We're going to increasingly use open source models to save money... we don't today have a budget constraint on our Anthropic contract. I think we're spending like probably 5 million a year or something. Ramping pretty fa..."

Ryan Petersen

Accessing non-natively supported AI models (DeepSeek V4 Pro, Gemini 3.7 Flash) inside Cursor IDE

"I'm using this via Open Router. If you were to sign up for Open Router and just ask Cursor how to set it up, you get it set up in like 2 minutes inside Cursor."

Riley Brown

Dynamically selecting the cheapest AI model provider based on uptime, data retention, and pricing

"Go on OpenRouter. What OpenRouter does is you pick Kimi, Sacks, and then you get all the providers there. And then you pick which provider you want based on uptime and data retention and other issues and you can dynamically pick the lowest one."

Jason Calacanis

Business logic automation, coding agents, workflow automation

"As long as I'm allowed to use OpenAI and Anthropic, then I don't mind at all. Like they deserve it. These things are just incredible, miraculous products. What I worry about is that they cut us off and then we can't use it anymore."

Ryan Petersen

AI agents for personal/business tasks

"I've become on team Sam and OpenAI recently with my agents as my agents have taken control of my life. I've changed my allegiances to some extent."

Jason Lemkin

Cost-efficient task execution in Cursor; near-free Google Sheets creation and general agent tasks

"DeepSeek V4 Flash is probably the most interesting because for certain tasks it is 105 times cheaper than Claude. I highly recommend trying these models. This model is 20 to 100 times cheaper depending on the task."

Riley Brown

AI assistant access while traveling in China

"When I'm in China for two weeks, it's DeepSeek and Gemini. Those are my friends. DeepSeek is intentionally crippled in China. It's not as good as it is here. It can't search the web and it is trained on different data as near as I can tell."

Jason Lemkin

Fast classification, such as a hot dog / not hot dog app

"Also very important, with Jev I built hot dog not hot dog... You all know how bullish I am on Jev. I think this is like the missing piece in a lot of our AI architecture."

Claire Vo

UI design optimization, such as high-converting app store screenshots and direct response websites

"I've been hooked on Jev. I think there's a bunch of use cases for Jev that people are not talking about, underserved. One that I think is really interesting is just UI design. How do you use a decisions API to get you the most highly converting app store sc..."

Greg Isenberg

Base models for fine-tuning and post-training work

"What we did to initially gain some popularity was like Llama was putting out base models. We fine-tuned those into something that we thought would be like something the market would want."

Dylan Rolnick

"We have a whole bunch of Llama and Mistral running and stuff internally and a bunch of OpenAI."

Mike Cannon Brooks

"I ask it to use Nano Banana Pro and I gave it the API key for that specific image generation model to my OpenClaw."

Jesse Genet

"I made that book image in Nano Banana Pro, removed the background in Canva"

James Dickerson

Finding and understanding open models, reading model cards, finding quantized versions of models

"If you're new to local AI, one of the best exercises is actually just to open Hugging Face and read a model card really slowly. You're going to learn a lot. That's the first place I would go. They're the biggest at it."

Greg Isenberg

Training and experimenting with AI models for the Kaizen project

"HuggingFace is where the world's AI models and training data sets live. I've spent a lot of time there as a part of what we're doing on Kaizen so that we can really get a singular output."

Tom Bilyeu

AI-powered coding using open source models as an accessible alternative to frontier proprietary models

"I would also highly recommend there's this YC company called Open Code which is built on top of the open source models and they're very very good."

Arnav

Primary coding tool for working with AI agents, testing different models

"I use open code a lot. I can very quickly try different models when the new models come out. That is the big benefits I get from these open source tools."

Kun Chen

Animating content

"I actually had Astra and 5.5 go head-to-head in animating some stuff for me and it was just like it knew exactly what to do."

a16z

AI-powered safety and content moderation systems

"Behind the scenes though at Roblox for many many years we were pushing very early AI BERT models primitive type models to drive safety."

David Baszucki

"Shout out to Gamma for helping me make some amazing slides right out the gate. Great use of AI."

Claire Vo

Motion control for creating anthropomorphic animal exercise videos

"I found that Cling is the model that works best for these videos. Fun fact, Higgsfield was down a couple weekends ago and I was fiending for more video creation. So I went and downloaded Cling separately and it didn't make videos that were as good as Cling ..."

Bryce Rattner Keithley