RFP & DDQ response software,
honestly compared
How Diligio Respond compares with the major RFP, due-diligence, and security-questionnaire tools, on pricing, AI accuracy, and where your data lives.
- Flat $7,499 / year
- Independent answer verification
- EU data residency
- SSO + API included
All of them, side by side
The dimensions that separate these tools most. Competitor details are publicly reported as of June 2026 and hedged; the full, balanced write-ups are linked below.
Custom quote means no public rate card. Reported price ranges and sources are on each head-to-head page below.
Head-to-head comparisons
The leading tools take different routes. Responsive (formerly RFPIO) is the enterprise incumbent, Loopio is the mid-market workflow favourite, AutogenAI is a generative bid-writing engine, and Arphie is an AI-native newcomer. Diligio Respond is a flat-priced, verification-first alternative: one model drafts each answer strictly from your knowledge base, and a second independent model verifies it before you review it.
Diligio vs Responsive
The enterprise incumbent, compared with a flat-rate, verification-first alternative.
Read the comparisonthe mid-market workflow favouriteDiligio vs Loopio
A polished library and workflow, compared with a flat-rate, verification-first alternative.
Read the comparisonthe generative bid-writing engineDiligio vs AutogenAI
Generative bid writing, compared with grounded, verification-first answering.
Read the comparisonthe AI-native newcomerDiligio vs Arphie
Two modern, AI-native tools, compared on verification, pricing, and data residency.
Read the comparisonWhat to look for when comparing
Four questions separate these tools more than feature lists do, whether you are choosing a questionnaire tool or a compliance platform. New to the processes themselves? Start with the guides.
How the AI prevents mistakes
Single-model drafting puts the burden on a reviewer to catch errors. A second, independent check, whether verifying a questionnaire answer against its source or holding evidence for a human to certify, enforces accuracy before anything is attested.
Whether pricing is published
Most tools in both categories are sold by custom quote with no public rate card and seat- or framework-based scaling. A flat, published price removes both the sales cycle and the per-seat maths.
Where your data is stored
Data residency (for example, EU at rest) is often a fixed requirement for European buyers, and many vendors do not specify a default region publicly.
What is included versus an add-on
SSO, API and agent access, translation, extra frameworks, and implementation are frequently gated behind higher tiers or sold separately. Check the total cost, not the headline.
How we compare
Competitor details are publicly reported as of June 2026. None of these vendors publishes an official rate card, so every price is hedged and dated. We credit each tool's genuine strengths before drawing contrasts, and Diligio's claims map to shipped capability. If you spot anything out of date, email support@diligio.co and we will correct it.
Frequently asked questions
What is the best RFP and DDQ response software in 2026?
The best tool depends on your priority. Responsive (formerly RFPIO) suits large enterprise bid teams; Loopio suits mid-market teams wanting a polished library; AutogenAI suits persuasive long-form bid writing; Arphie and Diligio are modern AI-native options. Diligio focuses on verified accuracy and a flat, published $7,499/year price.
Which RFP tools publish their pricing?
As of June 2026, Responsive, Loopio, AutogenAI, and Arphie are all sold by custom quote without a public rate card. Diligio publishes a flat $7,499 per year that includes the AI, SSO, and API access, so you can compare cost without a sales call.
What should I look for when comparing RFP and questionnaire tools?
Look at how the AI prevents hallucinations (single-model drafting versus independent verification), whether pricing is published and flat or seat-based with add-ons, where your data is stored, whether your content is used to train models, and whether SSO and API access are included or sold as upgrades.
What is the best compliance automation software in 2026?
It depends on your priority. Vanta is the most mature platform with the broadest integrations and framework coverage; Drata is strong on continuous monitoring; Diligio Compliance suits teams that want an AI agent they control with a human-certify gate, one knowledge base shared with their questionnaire answering, and a flat $1,999 per year price.
Is Diligio Compliance a good Vanta or Drata alternative?
For teams that want their ISO 27001 and SOC 2 done by an agent and certified by a human, on the same knowledge base that answers their security questionnaires, at a flat $1,999 per year, yes. Vanta and Drata remain more mature on continuous monitoring, integrations, and framework breadth today, which we state plainly on each head-to-head page.
See it on your own documents
RFPs, DDQs, and security questionnaires — drafted from your own knowledge base and independently verified before you review them, all on the same source of truth that keeps you audit-ready.
Before you shortlist
New to the process itself? These guides cover the ground before the tooling.