AI Productivity Index (APEX) is the first benchmark that measures how well AI models perform real-world, economically valuable work. We partnered with former Treasury Secretary Larry Summers (@LHSummers), former McKinsey managing partner Dominic Barton, legal scholar Cass

Mercor CEO Brendan Foody has built a $10 billion empire freeing up valuable data from legacy industries, and making it available to AI labs.

Read about the future of Mercor:

We are now a $10 billion company. We have raised our $350 million Series C, led by @felicis with participation from @benchmark, @generalcatalyst, and @RobinhoodApp Ventures. Since our founding in 2023, we’ve set out to change how the labor market evolves alongside AI. Our

A year ago, our entire company fit into one conference room. Now, we’ve moved offices twice to keep up with our growth. We’re a team of more than 300 people globally, across engineering, product, and operations. I’m proud of how far we’ve come, and even more energized about

We’ve raised our $350M Series C at a $10B valuation from @felicis, @benchmark, and @generalcatalyst. Just 2 years after starting, Mercor is paying $1.5 million per day to experts in our marketplace. We’re creating a new category of work in the AI economy, where software

Jeff Bezos built Amazon off a simple question: “What’s not going to change in the next 10 years?” The answer is to build around the things that are stable in time. For Amazon, it was knowing their customers will always want more selection, lower prices and faster delivery. For

Sonnet 4.5 is now tied with o3 (Thinking = High) overall. APEX is the first benchmark that measures how quickly AI systems are accelerating productivity through economically valuable work. Sonnet 4.5’s gains are substantial.

Sonnet 4.5 is #1 in Medicine and jumps to #2 in Law—a 9-place leap over Opus 4.1.

APEX update: Claude Sonnet 4.5 (Thinking=On) enters our top 10 models at 59.85% overall. This is a +4.6 pt jump over Opus 4.1 (Anthropic’s previous leader).

Interesting: The models most capable of doing human-level work today, according to @mercor_ai: 🥇 GPT 5 🥈 Grok 4 🥉 Gemini 2.5 Flash

If you are interested in knowing in which industries AI is most successful in understanding (& which models), you should pay close attention to the APEX. More below.

The AI Productivity Index. @tylercowen @mercor_ai https://t.co/D2KxlmnQzt

AI has its PhD and now it’s on the job market. Introducing the AI Productivity Index (APEX), a benchmark that measures how well we’ve automated the most valuable industries in the world. Most benchmarks study abstract capabilities. APEX evaluates model performance on real

Last Friday, Mercor hosted the Future of Work with @generalcatalyst. We featured panelists @suryamidha, Co-founder & COO of Mercor, @Amresh__S, Director, Operations of Mercor, @_zach_richards_, Strategic Projects Lead at Mercor, and Kashyap Murali @katchu11, Member of the

@katieruthmishra @annarmonaco @nancyafairbank We love building this community, and we’re just getting started! If you’d like to attend our next event, sign up here:

Last Thursday, Mercor hosted our 3rd Women in AI Event in San Francisco. This time, we featured panelists @katieruthmishra , Khosla Ventures, @annarmonaco , Founder and CEO of Paradigm, and @nancyafairbank, Senior Strategic Project Lead at Mercor. Together, we welcomed incredible

After years of watching Lenny's podcast, it was incredible to do an episode together. The entire economy is becoming an RL environment machine and catalyzing Mercor's unprecedented growth.

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Behind every breakthrough in AI is human knowledge. At Mercor, experts across law, medicine, and engineering are driving progress and earning up to $400/hour. The future of work starts with you.