ContractbookHelping businesses scale with future-proof contracts
vs
NusiiThe proposal software serious businesses use to win more work
Comparison · Proposals & Contracts · weekly run Nov 2
Contractbook vs Nusii
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Nusii is the stronger AI pick in Proposals & Contracts: it has a visibility score of 1.7 versus 0.6 for Contractbook.
Choose Contractbook if…
- You want a free plan to start
- You need SOC 2 Type II or GDPR or eIDAS coverage
Choose Nusii if…
- You want the brand AI engines rank higher (1.7 vs 0.6)
- yearly billing gives two months free
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Contractbook | Nusii |
|---|---|---|
| Visibility score | 0.6% | 1.7% |
| Change vs last week | New | New |
| Rank in Proposals & Contracts | #41 | #26 |
| Share of voice | 0.2% | 0.6% |
| Mentions this run | 1 | 3 |
| Positive in AI answers | — | 67% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Contractbook 0pp · Nusii 0pp over 0 weekly runs.
Engine by engine
Nusii leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
ContractbookNusii
Head to head in AI answers
0 engine answers name both brands
0Contractbook ranked higher
0Nusii ranked higher
Features, pricing & fit
| Dimension | Contractbook | Nusii |
|---|---|---|
| Pricing model | Flat tiers | Flat tiers |
| Entry price | Contact sales | $29 / mo |
| Free plan | Yes | No · 14-day trial |
| Deployment | — | SaaS, online |
| Compliance | SOC 2 Type II, GDPR, eIDAS | — |
| Support | Live chat, Email, Phone support, Help Centre | Email support from the founder at support@nusii.com, Video calls on request, Chat and email support on plans |
| Founded | — | 2013 |
| Headquarters | — | Madrid, Spain |
| Employees | — | 1–10 |
| Funding | Series B · $44M raised | Bootstrapped |
| Best for | Small and growing companies that handle high volumes of low-complexity contracts | Freelancers, consultants, small agencies and service businesses that want fast, branded proposals without complex tooling. |
Plans side by side
Contractbook
EssentialCustommonth, billed annually
CentralizeCustommonth, billed annually
AccelerateCustommonth, billed annually
CustomCustom
Pros and cons
Themes from the AI answers that mention each brand
Contractbook
Profile in progress.
Nusii
- yearly billing gives two months free
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Contractbook vs Nusii”, https://slateindex.ai/compare/contractbook-vs-nusii, data of Nov 2, 2026. Licence: CC BY 4.0.