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SiliForm

Form builder that detects AI-written and fake responses

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Conversational form builder that scores every response for AI-written, rushed, duplicate and fake input, with unlimited forms and responses on the free plan.

Overview

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SiliForm is a conversational form builder that collects responses one question at a time, with AI rephrasing each question based on previous answers to maintain natural conversation flow. Every response is automatically scored for data quality on a 0-100 scale, flagging disposable emails, duplicate submissions, gibberish, speed-running, and AI-written answers based on typing rhythm, paste behavior, and other behavioral signals. The AI validates answers mid-conversation to catch fake input before submission. Forms can be embedded on websites, shared via custom links or QR codes, and integrated with HubSpot, Zapier, Google Sheets, and webhooks. The free plan includes unlimited forms, unlimited responses, AI generation, basic analytics, and all integrations.

Feature notes

  • Conversational forms with one question at a time
  • AI detection of typing rhythm, paste behavior, and tab-aways
  • Live AI validation of answers against questions
  • Question-level drop-off analytics (Pro)
  • Integrations with HubSpot, Zapier, Google Sheets, webhooks
  • Voice input for respondents
  • Auto-save and resume incomplete responses
  • Custom domains and branded forms (Pro)

Pricing

Pricing model: Freemium

Free plan: unlimited forms, unlimited responses, AI generation, basic analytics, integrations. Pro: $29/mo or $228/yr (save 34%), includes drop-off and geography analytics, UTM tracking, AI summaries, response quality scoring, custom domains.

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FAQ

What makes SiliForm different?
SiliForm checks every response for quality, not just counting submissions. Every response is scored for disposable emails, duplicates, gibberish, speed-running, and AI-written filler with reasons attached. Forms are also conversational, showing one question at a time, reworded by AI to reference previous answers, which increases completion rates.
Is there a free tier?
Yes. The Free plan is permanent with unlimited forms and responses, AI form generation, basic analytics, and HubSpot/Zapier/webhook integrations. New signups also get a 14-day Pro trial with no credit card required. When the trial ends, you drop back to Free with nothing lost.
How does SiliForm keep form data clean?
SiliForm uses four layers to maintain data quality. First, while someone is answering, AI checks each response against the question and nudges gibberish before submission. Second, if AI-response detection is enabled, SiliForm measures typing rhythm, paste behavior, tab-aways, and dwell time. Third, once submitted, the response is scored against a 100-point scale with checks for disposable emails, fake phone numbers, duplicates, speeders, and behavioral signals; anything below 60 is flagged. Finally, one toggle removes flagged responses from charts, KPIs, and exports so your numbers reflect real people.
Can SiliForm tell if an answer was written by ChatGPT?
SiliForm can flag answers for your review using AI-response detection. It measures how each answer was produced by analyzing typing rhythm, paste behavior, whether the respondent tabbed away and returned, and whether a long answer arrived with no edits. Those behavioral signals are deliberately advisory and flag responses for your review rather than auto-rejecting them.
Do I need logic or complex setup?
No. Section logic routes respondents automatically based on their answers without you building a logic tree by hand. Dynamic mode rewords each question conversationally as they go, handling branching automatically.

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