Amsterdam, May 21st, 2025.

Utopian Labs, a Dutch AI Research Lab, today announces the public release of cold-email-1, the world’s best email writing AI model. cold-email-1 is the first in a series of hyperspecialized AI models that Utopian Labs brings to market. 

Designed to write high-quality, relevant sales emails, cold-email-1 outperforms even the largest general-purpose models in benchmarks like relevance, recipient focus, and readability. This launch is part of a new era for AI - one where focused, niche expertise beats general-purpose scale.

A New Category: Hyperspecialized AI

Utopian Labs is among the first AI research labs dedicated to building hyperspecialized models for real business tasks. Mass adoption of AI faces three blockers: usability (most AI is locked in ChatGPT or SaaS tools), trust (general models hallucinate and make mistakes at scale), and cost (running large models is expensive). cold-email-1 is the first in a series; each model engineered to solve a specific problem and deliver better results than “one-size-fits-all” AI ever could.

“What makes cold-email-1 unique is its ability to outperform general-purpose models, while being 250x smaller. Most AI labs try to match GPT performance with a smaller model. Our models are trained on a new Reinforcement Learning technique, where they teach themselves how to become better at their task”, says Steven Nelemans, CEO at Utopian Labs.

“Would you rather have 10 generalists on your team, or 10 hyperspecialized experts working together seamlessly? That’s our vision for the future of AI: models that are focused and built to win in their niche.” — Steven Nelemans, CEO at Utopian Labs

Quality Over Quantity

Utopian Labs was founded on the belief that AI should make sales smarter, not noisier. cold-email-1 empowers teams to write better, more targeted emails, always keeping the user in control. Our approach is about high-quality communication, not mass automation or spam.

Seamless Integration

cold-email-1 is available via API or as part of the R1-Copywriting agent that integrates directly into your CRM systems and workflow builders. Teams can use Utopian Labs models and agents wherever they already work, with no black-box lock-in.

Transparency

To ensure transparency and build trust in the performance of cold-email-1, Utopian Labs has open-sourced part of their evaluation dataset and prompts used for benchmarking cold-email-1. The company also added a free public endpoint where everyone can score cold emails in the same way they did during their reinforcement learning, so anyone can verify performance for themselves.

About Utopian Labs

Utopian Labs pioneers hyperspecialized AI models; each engineered to master a single business task. The company believes the future of sales is human x AI: sales teams working alongside expert AI agents that handle research, qualification, timing, and copywriting at a level that general-purpose models can’t reach. Utopian Labs’ mission is to give sales teams real superpowers, combining human creativity with the speed, precision, and reliability of specialized AI.

More information

Press kit, benchmark charts, and more: link

Technical deep-dive: link