I’ve now sat through demo calls, read pricing pages that redirect straight back to a “Book a Demo” button, and pulled apart G2 reviews for every tool on this list. My original version of this article, published back in April, undersold how fragmented this category actually is. Vanta and Drata are compliance platforms that happen to auto-fill questionnaires as a feature. AutoRFP.ai and Conveyor are questionnaire tools that happen to touch compliance. Whistic and Responsive sit somewhere in between. Treating them as interchangeable is how teams end up paying for a $40,000 GRC platform when what they actually needed was a $6,000 questionnaire assistant — or the reverse.

Here’s how I evaluated each platform: I looked at what the AI actually does with a question it’s never seen before, how the tool sources its answers (cited evidence vs. vague “from your knowledge base”), what happens when a browser-extension portal fill breaks mid-questionnaire, and — critically — whether the published pricing means anything or is just a number vendors use to get you on a call. If your operational risk management program is already stretched thin, the wrong pick here compounds that problem fast.

The Actionable Matrix: All 6 Tools Side by Side

Pricing is directional, sourced from vendor pages and third-party buyer-contract data (Vendr) current as of August 2026. Ask for a written breakdown before comparing totals — several vendors here price core features as add-ons.

1. Vanta — Best for Evidence-Backed Answers Tied to Live Controls

Vanta’s pitch hasn’t changed since I last covered it: connect your stack (AWS, GitHub, Okta, 400+ integrations total) and let the AI Agent draft questionnaire answers from your actual, current control state instead of a static answer bank. Vanta reports automating over 80% of questionnaire responses with up to a 95% acceptance rate and roughly 81% faster review completion — numbers pulled straight from vendor-published data, so treat them as a ceiling, not a guarantee.

What I’d flag for anyone evaluating this seriously: questionnaire automation is not always included at the entry tier. Vanta’s Plus tier caps you at 25 AI questionnaires a year, and full automation volume only opens up at Professional, where contracts commonly land between $80,000 and $250,000 depending on headcount and frameworks. That’s a massive jump from the $7,500–$12,000 “starting price” you’ll see quoted everywhere, including in my own earlier version of this article. If your compliance program leans heavily on operational risk management software already, budget for the add-on tier before you sign.

2. Drata — Best for Catching Answers That Contradict Your Own Policy

Drata’s standout is AIQA — AI Quality Assurance — and it’s the one feature on this list I think every competitor should copy. Instead of just generating an answer, AIQA cross-checks the draft against your live policies and flags it when something doesn’t line up. If your password rotation policy changed last quarter and the AI tries to cite the old cadence, AIQA catches that before it ships to a prospect. That’s the kind of small, boring feature that prevents a genuinely embarrassing audit finding.

The catch: AIQA itself is tiered. The Standard package gives you 10 AI-powered questionnaire responses; unlimited handling only arrives on the Pro package, which sits at the top of Drata’s structure. Drata doesn’t publish a pricing page at all as of this writing — drata.com/pricing redirects to the homepage — so third-party buyer-contract data (Vendr) is the most honest anchor available: a $9,649 to $60,000 range with a $24,869 median across tracked deals. That’s a wide net, and it tells you the “starts at $7,500” line you’ll see on review sites is the floor, not the typical bill. Teams juggling this alongside AI tools for accountants in B2B SaaS should budget the median, not the headline number.

3. Conveyor — Best for Portal Auto-Fill and a Free On-Ramp

Conveyor is the tool I’d point a lean security team toward first, mostly because you can actually try it without a sales call. The free tier gives you a hosted Trust Center you can share with up to 120 companies a year — genuinely useful even before you touch the AI. The Professional plan ($9,600/year) unlocks the part everyone’s actually here for: a browser extension that fills out a prospect’s custom security portal directly, no copy-paste, and it works inside systems like OneTrust and ServiceNow.

Conveyor publishes some of the more specific accuracy claims in this space — 96% answer accuracy and a 98% questionnaire completion rate, with case studies citing Carta at an 83% time reduction and Lucid dropping to 22 seconds per question. Those are vendor-reported, so I’d verify against your own first batch of questionnaires rather than take them at face value. Where Conveyor genuinely comes up short: it’s built for security questionnaires specifically, not structured RFP or RFI governance, so teams running high-volume proposal operations alongside security reviews will still need a second tool for the sales-facing side.

4. AutoRFP.ai — Best for Actually Knowing What You’ll Pay

I’ll say it plainly: AutoRFP.ai is the only tool on this list with real, checkable pricing sitting on a public page instead of behind a “Talk to Sales” wall. Start is $499/month for 12 projects a year, Scale is $899/month for 24 projects, Accelerate is $1,299/month for 50 — and every tier includes unlimited users, SSO, and full AI functionality with no per-seat surcharge. After spending an afternoon trying to pin down real numbers for Vanta, Drata, Whistic, and Responsive, this transparency alone earns AutoRFP.ai a spot near the top of this list.

Its TrustScore feature — a confidence rating attached to every AI-generated answer — is the right idea for high-stakes documents, because it tells your reviewer exactly which answers need a second pair of eyes instead of forcing a line-by-line re-read of the whole draft. The trade-off is scope: AutoRFP.ai handles RFPs, DDQs, and security questionnaires well, but it doesn’t do win/loss analytics, doesn’t integrate with conversation-intelligence tools like Gong, and its “project” pricing model means a single sprawling enterprise DDQ counts the same as a five-question vendor form — which can eat your annual project allowance faster than expected if your sales intelligence platforms are feeding you a high volume of inbound requests.

5. Whistic — Best for Getting Ahead of the Questionnaire Entirely

Whistic’s whole philosophy is different from everything else on this list: instead of getting better at answering questionnaires, why not eliminate the questionnaire? Its Trust Catalog holds roughly 15,000 company profiles that buyers can pull on demand, and vendors that publish a Security Profile there report cutting vendor assessment time from a month down to about five days. That’s a real structural fix, not just a faster typing tool.

The AI-powered piece — Smart Response — only shows up on the top-tier Trust+ package, and it’s built to automate answers to whatever inbound questions still slip through despite the published profile. What Whistic won’t do is act as a broader GRC or TPRM suite: no financial health monitoring, no sanctions screening, no ESG risk scoring. If your HR software and finance stack already handle those adjacent checks elsewhere, that’s fine. If not, you’re stitching Whistic into a bigger toolchain rather than replacing one.

6. Responsive (formerly RFPIO) — Best for One Library Across Sales and Security

Responsive rebranded from RFPIO back in 2023 specifically to signal it does more than RFPs, and by 2026 that’s genuinely true: the same content library and Responsive AI layer serve sales RFPs, legal DDQs, and security-team questionnaires side by side. Its LookUp Chrome extension autofills supported security and procurement portals, and Responsive AI is trained against a reported $600B+ in historical proposal data across the customer base. For a large organization where sales, legal, and security are all drawing from one governed answer set, that’s a genuine structural advantage over point solutions.

The honest downside is fragmentation by tier. Responsive runs four editions — Lite through Enterprise — and feature placement is scattered enough across them that you can end up buying a whole edition upgrade just to unlock one capability you actually need. Published estimates for annual cost range wildly depending on the source, anywhere from roughly $6,500 to $28,000 on the low end up to $60,000+ for full enterprise deployments, which tells you the real number depends entirely on your negotiation and add-on stack, much like shopping for all-in-one SEO software where the sticker price and the invoice rarely match.

Best AI Software for Auto-Populating Security Reviews for High-Growth B2B SaaS Companies

At this stage you’re fielding questionnaires from every direction — enterprise procurement, mid-market security teams, the occasional startup running its own DDQ — and you need a tool that scales with volume without a proportional headcount increase. Conveyor or AutoRFP.ai fit best here: both handle high questionnaire throughput without the compliance-platform overhead of Vanta or Drata, and neither locks you into a multi-year enterprise contract to get there. If your sales motion also leans on AI tools built for growing US businesses, both integrate cleanly into an existing CRM-driven workflow.

Best AI Software for Auto-Populating Security Reviews for Fast-Scaling Tech Startups

If you’re pre-Series B and cash-conscious, start with Conveyor’s free Trust Center or AutoRFP.ai’s $499/month Start plan. Both let you prove the ROI before committing real budget. Resist the urge to buy a full Vanta or Drata contract purely for questionnaire automation at this stage — that feature is often gated behind their higher, headcount-driven tiers, and you’ll likely outgrow the free/entry options before you outgrow the price gap. Pair whichever you pick with a lean HR and payroll stack so your compliance spend doesn’t outpace your headcount.

Best AI Software for Auto-Populating Security Reviews for Overwhelmed CISOs and Security Teams

When the goal is protecting your team’s actual time, prioritize the tools with the strongest source-verification layer over the ones with the biggest marketing claims. Drata’s AIQA is purpose-built for this — it flags contradictions between an AI-drafted answer and your live policy before a human ever sees it, which is exactly the kind of check-behind-the-check a stretched security team needs. Vanta’s evidence-linked answers do similar work if you’re already deep in its ecosystem. Either way, don’t skip human review entirely; both vendors are explicit that policy drafts and questionnaire answers still need a second pair of eyes.

Best AI Software for Auto-Populating Security Reviews for SOC 2 and ISO 27001 Compliance

This is squarely Vanta and Drata territory — neither AutoRFP.ai, Conveyor, Whistic, nor Responsive collects audit evidence or monitors control drift the way a dedicated compliance-automation platform does. Vanta covers 35+ frameworks with continuous evidence collection across 400+ integrations; Drata matches it with 800+ integrations and its own continuous-monitoring layer. If your audit is the forcing function and the questionnaire automation is a bonus, pick based on integration depth with your actual stack, not on the questionnaire feature alone. Teams already using business continuity management software will find both platforms’ evidence-collection model familiar.

Best AI Software for Auto-Populating Security Reviews for FinTech and HealthTech Platforms

Regulated industries live and die by citation accuracy — a wrong answer about PCI DSS scope or HIPAA business associate status isn’t just embarrassing, it’s a liability. Whistic’s publishable Security Profile is well suited here because it forces you to formalize and version your compliance narrative once, rather than reconstructing it ad hoc for every questionnaire. For teams that also handle heavy DDQ volume from institutional partners, Responsive’s shared library across legal and security teams keeps FinTech-specific answers consistent across every department that touches a deal, which matters when your finance and accounting stack is also under regulatory scrutiny.

How to Actually Choose Between These Six

Ask what problem you’re actually solving

“AI software for security reviews” covers two genuinely different jobs: proving your compliance posture (Vanta, Drata) and answering questions fast (Conveyor, AutoRFP.ai, Whistic, Responsive). Buying the wrong category is the single most common mistake I saw across every G2 thread and buyer review I read while researching this piece.

Get the real number in writing before comparing

Every “starting price” you’ll see across this category, including my own earlier numbers, is a floor built for marketing pages. Ask vendors directly whether questionnaire automation, VRM, and Trust Center access are bundled or billed as add-ons — Vanta and Drata both gate these behind specific tiers, and that alone can double your real cost.

Test it against a question it’s never seen

Every vendor demo will look flawless on a rehearsed question. Bring your own oddball question from a real past questionnaire and watch what the AI does when it doesn’t have a perfect match in its knowledge base. That’s the moment that separates a tool that drafts from one that just retrieves.

FAQ

What’s the actual difference between Vanta/Drata and Conveyor/AutoRFP.ai?

Vanta and Drata are compliance-automation platforms first — they monitor your live control environment and collect audit evidence, with questionnaire auto-fill as one feature among many. Conveyor and AutoRFP.ai are built specifically to answer questionnaires and don’t do continuous compliance monitoring.

Can AI-generated security review answers actually replace human review?

No, and every vendor in this list says so directly. AI drafts get you most of the way there, but a human still needs to verify high-stakes technical claims before they go to a customer or auditor. Drata’s AIQA and similar checks reduce the risk of an obviously wrong answer, not eliminate the need for review.

Which tool has the most transparent pricing?

AutoRFP.ai, by a wide margin — its full pricing tiers are published on its site. Conveyor is second, with a listed Professional price of $9,600/year. Vanta, Drata, Whistic, and Responsive all require a sales call for real numbers.

Do any of these tools work inside a prospect’s custom security portal?

Yes — Conveyor’s browser extension, AutoRFP.ai’s Portal Agent, and Responsive’s LookUp extension all fill supported third-party portals like OneTrust, ServiceNow, and Ariba directly, rather than requiring you to export and re-upload answers manually.