Chat with AI personas, refine your pitch, and validate demand—before you write a line of code.
Get real-world feedback from AI personas so you ship features people actually want.
Start with a one-liner. We expand it with AI.
Choose from our library of pre-trained AI agents—each comes with a real-world backstory.
Our AI agents behave just like real interviewees—asking follow-ups, digging into your answers, and remembering context so you can practice true back-and-forth dialogue.
Receive AI-powered insight and success score.
FirstCustomer.ai helps you talk to AI-simulated users, test investor questions, and experiment with messaging — so you can move fast, learn early, and launch smarter.
Download AI-generated pitch decks from your investor simulations to use in real fundraising rounds.
Instantly create a high-converting landing page from your validated idea and user conversations.
Connect your own domain to showcase landing pages or share your startup profile.
Get detailed PDF summaries of each simulation session — ideal for sharing with co-founders or mentors.
Connect tools like Mailchimp or ConvertKit to start nurturing early waitlist signups.
Optionally share your simulation results to a public feed and get community feedback.