GRC platform vs. questionnaire service vs. DIY: what to use when an AI questionnaire blocks your deal
Short answer: these are three different tools for three different problems. A GRC platform (Vanta, Drata, and similar) manages a continuous compliance program and typically starts around $7,000–12,000/year. A questionnaire service answers one blocking questionnaire — Deal Rescue does it for $490 flat in 48 hours. DIY costs no cash but typically one to two weeks of a founder's or engineer's time, plus the risk of unsourced answers.
The comparison
| Criterion | GRC platform (Vanta, Drata…) | Questionnaire service (Deal Rescue) | DIY in-house |
|---|---|---|---|
| Problem it solves | Continuous compliance program: certifications, evidence collection, monitoring | One questionnaire blocking one deal | Same, if you have the time and the framework knowledge |
| Typical cost | ~$7,000–12,000/year entry point (annual contract) | $490 flat per questionnaire (≤60 questions), paid after delivery | $0 cash · typically 1–2 weeks of internal time |
| Time to answered questionnaire | Days to weeks once the program is set up; setup itself takes weeks | 48 hours from scope confirmation — late means free | Typically 1–2 weeks alongside day jobs |
| Legal citations per answer | Program-level artifacts; questionnaire answers still need drafting | Every legal claim cites its article (Reg. (EU) 2024/1689, AI-CAIQ, SIG 2026), verified against the Official Journal | Depends entirely on who writes it |
| Honest gap handling | Gap visibility is a platform strength | Gaps stated with a remediation step in a Gap Summary — controls are never invented | Risk zone: hopeful "yes" answers collapse in due diligence |
| Commitment | Annual subscription + implementation | None — per questionnaire, no account, pay after delivery | None |
| Best for | Teams with recurring audits and an internal compliance owner | Vendors of 10–50 people with a deal blocked now and no compliance department | Teams with framework expertise and slack time |
When a GRC platform is the right answer
Buy a platform when compliance is a program, not an incident: you expect several enterprise deals per year, each demanding SOC 2 / ISO 27001 (increasingly ISO/IEC 42001 for AI), and someone internally owns evidence collection. The subscription pays for itself in repeated audits — not in answering one PDF from one buyer.
When a questionnaire service is the right answer
Use a per-questionnaire service when the questionnaire is the exception, not the routine. The economics are straightforward: one blocked deal is a $490 problem, not a $7,000/year problem. The service model also fits the timeline reality — enterprise buyers rarely wait two weeks for answers without losing confidence in the vendor.
What to demand from any service you use (this is exactly what we hold ourselves to): published pricing, a public sample deliverable you can judge before paying, article-level citations for every legal claim, honest gap statements instead of invented controls, and everything marked "for review before submission — not legal advice".
When DIY is the right answer
Answer in-house when someone on the team already knows the frameworks in play and the deal can wait. If you go this route, our method guide walks through the whole process: how to answer the AI section of a security questionnaire — inventory first, the two-layer training-data answer, and the gap formula procurement teams accept. The two failure modes to avoid: legal claims without article citations, and "yes" answers to controls you don't actually have.
The decision in one line
Recurring audits and internal ownership → platform. One blocking questionnaire and no time → service. Framework expertise and a patient buyer → DIY with a rigorous method.
Context that changes the math in 2026: the EU AI Act's Article 50 transparency obligations apply from 2 August 2026 and were not postponed by the Digital Omnibus. AI sections in vendor questionnaires (AI-CAIQ, SIG 2026) are becoming standard, which raises the frequency of questionnaires — and the cost of answering them wrong. See who actually owes what under Article 50.
Sources and method
- Regulation (EU) 2024/1689 (EU AI Act), Official Journal of the European Union — Art. 50 application date and obligations.
- CSA AI-CAIQ (Cloud Security Alliance, October 2025) and SIG 2026 AI domain (Shared Assessments) — questionnaire frameworks referenced.
- GRC platform entry pricing: approximate figures as commonly published on vendor pricing pages; verify current pricing with each vendor.
- Deal Rescue pricing and guarantees: machine-readable pricing · pricing section · service terms.