TheySaid
TheySaid is an AI-native user testing platform that puts real and synthetic users inside the tools you build with, so nothing ships on a guess.
About the product
TheySaid is an AI-native user testing platform that shows teams how users will react, right where they build. Version 4.0 (launched November 2026) embeds validation directly into the tools teams already use: synthetic users trained on more than 100,000 hours of real usability sessions test designs in Claude Design, v0, Replit, Bolt, and Lovable, and validation auto-triggers when a Jira ticket exits design status. TheySaid unifies AI user testing, AI-moderated interviews, conversational AI surveys, AI polls, forms, in-app prompts, and website embeds, with a 5M+ participant panel and support for 70+ languages.
TheySaid pros
- Synthetic Audiences test designs in minutes, with screen and voice recorded
- Validation embedded in design and coding tools via MCP, plus Jira, Linear, ClickUp, and Monday.com
- AI-moderated interviews and conversational surveys with automatic synthesis
- 5M+ participant panel and support for 70+ languages with auto-translation
- Free plan available with no credit card required
TheySaid cons
- Synthetic users surface roughly 60-70 percent of the insights real participants would, so they are a screen, not a verdict
- Simulated respondents must never be presented as real customer evidence
- AI moderation can ask leading follow-ups and automated themes can flatten minority views, so audit transcripts and clips
