NusiiThe proposal software serious businesses use to win more work

ResponsiveResponsive AI powers bids, questionnaires, and trust centers with insight, accuracy, and speed.

Comparison · Proposals & Contracts · weekly run Nov 2

Nusii vs Responsive

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Responsive is the stronger AI pick in Proposals & Contracts: it has a visibility score of 10.7 versus 1.7 for Nusii, and ranks ahead in 0% of the answers that name both.

Choose Nusii if…

You want a lower entry price ($29 vs $10,000)
AI answers describe it more positively (67% vs 33% positive)
yearly billing gives two months free

Choose Responsive if…

You want the brand AI engines rank higher (10.7 vs 1.7)
You need GDPR or AICPA SOC 2 or ISO 27001 or ISO 27701 or ISO 42001 or CCPA or STAR Level 1 coverage
You prefer a larger, established vendor (501–1,000 employees)
Strong enterprise choice for high-volume RFPs

AI visibility side by side

Latest weekly run · Nov 2

Metric	Nusii	Responsive
Visibility score	1.7%	10.7%
Change vs last week	New	New
Rank in Proposals & Contracts	#26	#10
Share of voice	0.6%	4%
Mentions this run	3	20
Positive in AI answers	67%	33%

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Nusii 0pp · Responsive 0pp over 0 weekly runs.

Engine by engine

Responsive leads on 3 of 3 engines

ChatGPT

AI Mode

3.3%

15.7%

Perplexity

1.7%

13.3%

NusiiResponsive

Head to head in AI answers

1 engine answers name both brands

1Nusii ranked higher

0Responsive ranked higher

Prompt	Engine	Nusii	Responsive
Alternatives to the most popular proposal and contract tool	AI Mode	#5	#8

Features, pricing & fit

Dimension	Nusii	Responsive
Pricing model	Flat tiers	Flat tiers
Entry price	$29 / mo	$10,000 / mo
Free plan	No · 14-day trial	No
Deployment	SaaS, online	Flexible hosting options
Integrations	—	32+
Compliance	—	GDPR, AICPA SOC 2, ISO 27001, ISO 27701, ISO 42001, CCPA, STAR Level 1
Support	Email support from the founder at support@nusii.com, Video calls on request, Chat and email support on plans	Professional Services with APMP-certified experts for onboarding and training, Premium deployment and support on Growth and Enterprise editions
Founded	2013	2015
Headquarters	Madrid, Spain	Frisco, Texas, United States
Employees	1–10	501–1,000
Funding	Bootstrapped	Round led by Elevate Capital
Best for	Freelancers, consultants, small agencies and service businesses that want fast, branded proposals without complex tooling.	Dedicated proposal or operations teams with legal, InfoSec and compliance involvement, and global or multi-region operations.