Replicate

In the summer of 2022, Replicate co-founder Ben Firshman woke up sick with COVID and found something stranger on his laptop: a massive spike in traffic from developers worldwide rushing to the platform to run Stable Diffusion, the just-released open-source image model that had electrified the internet. Firshman and co-founder Andreas Jansson had launched Replicate the previous year, quietly building infrastructure for a world that wasn't quite ready yet—until suddenly it was.

What Replicate Does

Replicate is a serverless GPU cloud platform that lets any developer run over 50,000 open-source machine learning models—from Stable Diffusion to Llama-3 to Whisper—with a single line of Python or JavaScript. Instead of wrestling with CUDA drivers, dependency hell, and GPU provisioning, developers make one API call and Replicate handles provisioning, execution, scaling, and teardown. Billing runs by the second, only when a model is actually running. The company's open-source tool, Cog, defines a universal container format for packaging ML models, which became a de facto standard adopted across the industry.

• Model catalog: 50,000+ public and community models, including image, video, audio, and language models
• Custom deployment: Teams can deploy and scale their own fine-tuned models with no infrastructure management
• Fine-tuning: Train models on custom data directly through the API
• Deployments: Always-on dedicated endpoints with configurable autoscaling for production workloads

From Y Combinator to Cloudflare

The company went through Y Combinator's Winter 2020 batch—graduating right into a pandemic with no customers and no demo. Through years of quiet infrastructure building for niche ML communities, Replicate found its product-market fit when generative AI exploded in late 2022. It raised a $17.8M Series A in early 2023, then a $40M Series B led by Andreessen Horowitz in June 2023, reaching a $350M valuation with over 2 million developers and 30,000 paying customers. Clients including BuzzFeed, Unsplash, Character.ai, and Magnific built production applications on the platform. On November 17, 2025, Cloudflare announced it would acquire Replicate, and on December 1, 2025, the deal officially closed—with Replicate continuing as a distinct brand integrated into the Cloudflare Developer Platform.