Proaction boosts sales 60% and saves 75+ hours with Codex

Proaction, a fleet management software startup, leveraged Codex to enable its non-technical COO, Colin Knudsen, to build customized interactive demos directly from sales calls. This shift allowed the company to bypass engineering bottlenecks, resulting in a 60% increase in sales and saving 40–60 engineering hours per month.

Custom Demos Drive Sales

Previously, personalized demos required significant engineering time, forcing the team to rely on static slide decks. With Codex, Knudsen inputs context from call recordings, emails, and spreadsheets to generate HTML demo environments that mirror the prospect’s specific fleet and workflows. These demos take 30 to 45 minutes to build, compared to the 10 hours it would take an engineer. The ability to show prospects their own data in a working solution increased the rate of deals moving from initial contact to solution development by 50% to 60%.

Operational Efficiency and Agent Integration

Beyond demos, Knudsen uses Codex plugins for Granola, Gmail, Slack, Linear, GitHub, and HubSpot to centralize daily tasks, saving an estimated 25–33 hours of founder time monthly. The platform also integrates GPT-Live-1 and GPT-6 Astra to power a "Managed Execution Layer." This layer uses voice agents, such as "Marty," to handle vehicle maintenance coordination, including calling repair shops and arranging service. GPT-6 Astra specifically improved execution speed, with Head of Product Danny O’Halloran noting that its computer-use runs are more succinct than previous models like GPT-5.6 Sol.