AutoRFP vs FillBase — Which DDQ tool is right for you?
AutoRFP vs FillBase: honest comparison of two DDQ automation tools. Features, pricing, accuracy, and which one fits your workflow.
AutoRFP.ai has built an impressive business — ~$660K ARR, bootstrapped, growing 42% month-over-month. They clearly solve a real problem. So how does FillBase compare?
The key difference: AI Approach
AutoRFP uses GPT-based generation. Upload your documents, and the AI generates responses using a combination of your content and general knowledge.
FillBase uses grounded AI. Responses come exclusively from your uploaded documents — SOC 2, policies, past DDQs. If the answer isn't in your sources, FillBase flags it for human review instead of generating a plausible-sounding guess.
Why this matters: In a DDQ, a wrong answer isn't just unhelpful — it can create legal liability or lose a deal. "The AI made it up" isn't an acceptable response when a prospect's security team asks for evidence behind your answer.
Feature comparison
| FillBase | AutoRFP | |
|---|---|---|
| AI approach | Grounded (your docs only) | GPT-based (your docs + general) |
| Source citations | Yes, every answer | Partial |
| Confidence scoring | Yes — know vs. don't know | Limited |
| Learning agent | Yes — improves with corrections | Basic |
| Consistency engine | Yes — same answer cross-DDQ | No |
| Slack bot | Yes | No |
| Pricing | Free–$599/mo | $69–$899/mo |
| Free tier | Yes (200 req/mo) | Limited |
When AutoRFP is the better choice
- You need RFP support (not just DDQs) — AutoRFP covers RFPs more broadly
- You want the cheapest paid option ($69/mo entry)
- You're comfortable with GPT-generated answers that may include general knowledge
- You do a mix of RFPs and DDQs
When FillBase is the better choice
- Accuracy and source citations are non-negotiable for you
- You sell to enterprise buyers who verify answers against evidence
- You want answers grounded in YOUR documents only — zero hallucination risk
- You want a Slack-native workflow
- You want the AI to learn and improve from your corrections over time
- Consistency across multiple DDQs matters (same question = same answer always)
The accuracy question
This is the fundamental tradeoff. AutoRFP may generate more complete-sounding answers out of the box because it can draw on general knowledge. FillBase may flag more questions for human review because it only uses your documents.
But in security questionnaires, a flagged "I don't know" is always better than a confident wrong answer. Your prospect's security team will verify claims. Hallucinated answers get caught, and they destroy trust.
Pricing comparison
For the same volume (~500 requirements/month):
- AutoRFP: ~$299–$499/mo (estimated, varies by plan)
- FillBase: $149/mo (Starter)
FillBase is more affordable at the tier most mid-market companies need.
The bottom line
Both tools solve the same core problem: making DDQ completion faster. AutoRFP has more traction and a broader RFP focus. FillBase is more specialized in DDQ accuracy with grounded AI, source citations, and a Slack-native workflow.
If you prioritize speed over accuracy, AutoRFP works. If you prioritize accuracy and audit trails, try FillBase.
