Your CISO gets stuck with a 300-question security questionnaire on a Thursday. The deal is worth $400K, and the deadline is Monday. Sounds stressful, right?

However, this is not a rare situation. It happens every week for thousands of security and sales teams. For years, the only option was to struggle through it by searching old spreadsheets, messaging different people on Slack, hoping the answers were still correct, and submitting everything late at night.

In 2026, that is no longer the only way. AI tools made for automated vendor security questionnaires are changing everything. Teams that once needed 14 days can now finish in less than 48 hours.

But not every tool works as promised. If you pick the wrong one, you pay for a tool that only gives basic suggestions. On the contrary, if you pick the right one, your security team will stop slowing down sales deals.

So, who has the best AI agent for security questionnaires in 2026? Let’s find out.

Why This Problem Got So Much Worse (And Why AI Finally Caught Up)

The number of security questionnaires is growing fast. Enterprise security teams are now receiving more vendor security questionnaires each quarter than in Q1 2025. This is mainly due to stricter regulations and more stringent third-party risk checks.

What does this mean for businesses?

Mid-sized companies handle around 50-200 questionnaires every year. Information security managers can spend up to 15 hours each week answering them. Their work week is spent on a task that does not directly improve security.

Manual processes were already frustrating. Now they are simply not practical.

This is why AI is a great fit for this problem. Security questionnaires need a lot of data and a lot of time, but most of the work is repetitive. The same question about encryption, access controls, incident response, and SOC 2 appears again and again, and is just written each time differently. A smart AI agent does more than suggest words. It understands the question, finds the right internal information, and creates accurate answers based on real compliance documents.

A 2025 Forrester study found that InfoSec compliance AI tools can reduce completion time from 14 days to less than 48 hours. McKinsey reports that automating compliance work can lower operational costs by up to 30%. Furthermore, KPMG’s 2025 Third-Party Risk Management survey also found that the focus on automating vendor assessments is increasing significantly. It is due to the increasing vendor ecosystem complexity, cybersecurity threats, and regulatory pressure.

The market is ready. The real question now is, Which tool do you choose?

What Separates a Real AI Agent from a Fancy Search Bar?

Before comparing vendors, it is important to know what features really matter. The best AI for RFP responses and security questionnaires usually has four key qualities:

1. Uses your internal company data, not random internet content

Your AI tool should create answers using your real documents, like SOC 2 reports, security policies, penetration summaries, and past questionnaire responses. Wrong or made-up security answers can create serious risks.

2. Confidence scoring and human review when needed

A strong platform knows when it is unsure. It can automatically answer questions it knows well and send difficult or unclear questions to subject matter experts for review. This is what makes 70-90% auto-fill truly valuable.

3. Supports multiple file formats

Security questionnaires can come in many formats, like Excel, PDF, Word documents, or online portals. If a tool works with only one format, it can slow your process down instead of helping.

4. Keeps a clear record of answers

Every answer should be linked to a source document and have a history of changes. This is essential for security, legal, and compliance teams.

Top AI Agents for Security Questionnaires in 2026

Here’s an honest breakdown of the leading platforms. Each has a clear use case and a clear ceiling.

1. Skypher

Skypher is one of the top security questionnaire automation software, with a 96% accuracy rate. It is trusted by major Fortune 500 companies, including Adobe.

What makes Skyher stand out is that it works like a true Agentic AI. This means it not only drafts answers but also helps in managing the full security questionnaire process, including portal-based reviews through built-in integrations with OneTrust and ServiceNow.

Its system uses one layer to find and generate the right answers, while another layer improves the response for tone and compliance needs.

Skypher also includes a Unified Trust Center, so companies do not need separate tools for internal questionnaire responses and external trust sharing.

Best For: Large enterprise teams managing many important questionnaires that need highly accurate and reliable answers.

2. Arphie

Arphie is a platform focused on transparency and explainability. For every AI-generated answer, it clearly shows the source document, confidence level, and how that answer was created. This solves the “black box” issue that often stops enterprises from trusting AI tools.

Arphie has also developed a patented solution for this challenge. It reports an 84% answer acceptance rate with source citations, and most customers can start using the platform in less than a week.

Another big advantage is that it removes the need for a manually managed content library. Instead, it connects directly to tools like Google Drive, SharePoint, and Confluence, so answers stay updated with the latest information.

Best For: Enterprise teams that need to explain and justify AI decisions to legal, compliance, or security leaders.

3. Iris AI

Iris is one of the highest-rated platforms, with a 4.9/5 score on G2 from more than 66 reviews. It is regularly ranked highly for customer satisfaction.

The platform can auto-fill 70-90% of questionnaire answers using your verified knowledge base, while also showing confidence scores for each response.

Iris supports many file formats, including Excel, PDF, Word, Google Sheets, and web portals. It also keeps your knowledge base updated by syncing continuously with systems like Google Drive, SharePoint, Confluence, and Vanta. This helps make sure your information stays current.

Best For: Teams looking for an easy-to-use, highly rated platform with strong support for many file formats.

4. AutoRFP.ai

AutoRFP.ai is designed for speed and handling a large number of questionnaires. It helps companies respond much faster and manage high volumes with less manual work.

For example, one client, Cubiko, reduced security questionnaire response time by 85%. Another client, Fiddler AI, reduced response time by 87% and said that 99% of answers needed only small edits.

The platform creates AI-generated drafts, routes tasks automatically through Slack, and allows unlimited team collaboration without extra per-user pricing.

It is also a strong option for companies looking for AI for RFP responses, since it helps teams answer requests quickly and efficiently at scale.

Best For: Mid-to-large B2B SaaS companies that receive many questionnaires and want a focused solution instead of a full compliance suite.

5. Vanta

Vanta’s questionnaire automation is not a separate product. It is built into its larger GRC and compliance platform.

If your company already uses Vanta for SOC 2, ISO 27001, or HIPAA compliance, then using it for automated vendor security questionnaires is a natural next step. It allows teams to manage compliance and questionnaires in one system.

Answers are linked to live policies and evidence, which helps keep responses accurate, updated, and ready for audits.

Best For: Growing companies with strong compliance programs that want questionnaire automation included in their existing platform.

6. Conveyor

Conveyor reports a 95%+ first-pass accuracy rate and is built for teams that want to start quickly without long setup times or heavy maintenance.

It can handle different file formats easily, making it simpler to work with various questionnaire types. Conveyor also includes a document-sharing portal, which allows prospects to securely access important security documents with proper access control.

Best For: Startups and growing companies that want fast deployment and a tool that is easy to manage over time.

7. Loopio

Loopio is one of the most well-known and trusted names in this space. It is a popular choice for teams that handle RFPs, DDQs, and security questionnaires regularly.

Its main strength is a well-organized answer library and strong project tracking features. This helps teams reuse past answers and manage workflows smoothly.

However, its AI features are not as advanced as some newer InfoSec compliance AI tools. It focuses more on reusing existing content rather than creating smart new answers automatically.

Best For: Sales and InfoSec teams that work with repeat questionnaire formats and need strong workflow management.

8. SecurityPal

SecurityPal combines AI technology with certified human analysts. This means it uses AI to answer questionnaires quickly, while experts review the responses for quality and accuracy.

The platform has already processed more than 2.5 million questions, showing strong experience in handling large volumes of security questionnaires.

Its biggest advantage is the added human review layer that fully AI-based tools cannot offer. If your company needs expert approval at every step, SecurityPal helps you maintain that process without causing delays.

Best For: Highly regulated industries such as finance and healthcare, where fully automated responses may create too much risk.

Quick Comparison at a Glance

How to Choose the Right Tool for Your Team

Every vendor above works. The question is what works means for your specific situation. Here’s a practical filter:

Start here:

• Do you handle fewer than 20 questionnaires per quarter? A simpler solution, like Conveyor or Loopio, may be enough.

• Do you need full compliance integration (SOC 2, ISO 27001, HIPAA)? Vanta or Drata should be on your shortlist.

• Is your team in a regulated industry? Look at SecurityPal for the human-AI hybrid.

• Do you need to justify AI decisions internally? Arphie is built for exactly that.

• Are you an enterprise with high volume and portal-based submissions? Skypher is purpose-built for that.

• Do you want the best user-reviewed experience? Iris AI's G2 ratings speak for themselves.

There’s also a question of what automated vendor security questionnaires means for your organization long-term. The best platform does not just help you respond faster today. They build a living knowledge base that gets smarter with every questionnaire you complete.

The Bottom Line

The answer to Who has the best AI agent for security questionnaires in 2026? depends on your volume, compliance infrastructure, industry, and how much your team needs to trust and verify the AI’s outputs.

Manual questionnaire responses are no longer competitive. When the average breach costs $4.4 million (IBM, 2025) and buyers are more rigorous than ever about third-party risk, the speed and accuracy of your security response are a direct factor in whether deals close.

The right tool for you is the one your team will actually use consistently, accurately, and at scale.