Traditional "writing-first" cultures create communication gaps and translation errors. With modern AI tools, product managers can now build working prototypes in hours. This "show, don't tell" approach gets ideas validated faster, secures project leadership, and overcomes language and team barriers.

Instead of starting with a blank slate, Nike's team prototypes new ideas by physically cutting and modifying existing products. This "cobbling" method enables rapid, low-cost testing of core concepts before investing in new designs and expensive molds, allowing them to fail fast and forward.

After a sales pitch to a major influencer failed, a 10X engineer built a working version of the proposed app in just four hours. Putting the functional product directly in the influencer's hands immediately vaulted 10X back to the top of their list, demonstrating that rapid AI-enabled prototyping is a powerful sales tool.

In AI, low prototyping costs and customer uncertainty make the traditional research-first PM model obsolete. The new approach is to build a prototype quickly, show it to customers to discover possibilities, and then iterate based on their reactions, effectively building the solution before the problem is fully defined.

At OpenAI, the development cycle is accelerated by a practice called "vibe coding." Designers and PMs build functional prototypes directly with AI tools like Codex. This visual, interactive method is often faster and more effective for communicating ideas than writing traditional product specifications.

Historically, resource-intensive prototyping (requiring designers and tools like Figma) was reserved for major features. AI tools reduce prototype creation time to minutes, allowing PMs to de-risk even minor features with user testing and solution discovery, improving the entire product's success rate.

To overcome leadership resistance to an internal tool, Walmart's PM built prototypes populated with actual production data. This tangible "what if" scenario demonstrated exactly what executives would see and the value they would get, proving far more effective than standard mockups for securing buy-in.

When an engineering team is hesitant about a new feature due to unfamiliarity (e.g., mobile development), a product leader can use AI tools to build a functional prototype. This proves feasibility and shifts the conversation from a deadlock to a collaborative discussion about productionizing the code.

The product development cycle has shifted. Instead of writing a spec, Product Managers use AI coding tools like Bolt.new to build the initial working version of a product. They then hand this functional prototype to engineers for hardening, security, and scaling, dramatically accelerating the process.