New product from Fifteenth - Automated instant tax insights! Designed in collaboration with CPAs and powered by Anthropic - check it out at fifteenth.com

Claude 4’s agentic capabilities are really impressive - we saw our eval scores jump from 93% to 96% while cutting latency by 20%!

What if April 15th were just another day? Ankur and Laura Moreno, founders of Fifteenth, are transforming tax preparation for complex financial situations. Their platform identifies missed deductions, optimization opportunities, and planning considerations by

Forward logo still up on an abandoned building in SF. Feels like a warning sign to every healthtech founder walking by.

Calling c the "speed of light" completely misses the point. Rather, c is the "spacetime exchange rate": how many units of space you can exchange for one unit of time. In actuality, everything travels at the "speed of light", just not necessarily through space alone... (1/4)

The agents are starting to work real well 👀

I’m not big on identities, but I am extremely proud to be American. This is true every day, but especially today—I firmly believe this is the greatest country ever on Earth. The American miracle stands alone in world history. I believe in techno-capitalism. We should encourage

On our evals, GPT5 does slightly worse than Claude 4 Sonnet and takes 4x longer! To be fair, the prompt isn't tuned for GPT5 but still a bit disappointing - definitely doesn't feel like a SOTA model.

🚨 Leaderboard Update Claude Opus 4.1 Thinking by Anthropic debuts in the Text & WebDev Arenas - going straight to the top. 🚀 A few highlights: 💠Claude Opus 4.1 is now the only model to rank #1 across all major categories 💠#1 Overall, tied with three other models:

Gemini 3 is a phenomenal model. Most of our evals went up by ~5% and are now >= human scores. Thanks Google AI!

Wild that Figma is trading at a $17B valuation. One of the few true monopolies in tech right now!

It's a good day when you get a dozen sign ups before the morning coffee ☕️

Regular tax firms don't grow like this. They stop taking clients after December and only grow 10% YoY. Fifteenth is doing something different. We've been growing 20% MoM for the last 6 months, and it's only accelerating into this tax season. Why are we able to accept so

👋 Meet the co-founders behind Fifteenth Ankur navigated taxes as a founder + early employee at companies like X , Flexport , and Rippling . He couldn't get clear answers on the tax treatment of complex equity compensation, now he's building a better way. Laura Moreno