PromptSignal vs Signum.AI (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Signum.AI
From $49/mo against from $99/mo
Free plan
Signum.AI
Only Signum.AI has one
Higher rating
Signum.AI
3.6 against 3.7
Same job?
Yes
Both are SEO tools

Side by side

Compared on	PromptSignal	Signum.AI
Our rating	3.6	3.7Better
Starts at	$99/mo	$49/moBetter
Free plan	No	YesBetter
Category	SEO	SEO
Plans	From $99/mo	From $49/mo
Key features	Brand visibility tracking across four major models Ranking position within AI answers Sentiment scoring on how you are described Competitor tracking and benchmarking Technical recommendations and prompt performance analytics	Brand visibility tracking across ChatGPT, Perplexity and Gemini Competitor benchmarking and AI visibility landscape Source and citation analysis Market-signal monitoring of reviews, news and website changes Visibility recommendations with activity feed and email alerts
Pros	Sentiment scoring separates good mentions from bad ones Unlimited users on the entry plan On-premise and SSO available at enterprise	Source analysis shows which pages and publications models draw on Published entry price of $49 a month with a 14-day money-back guarantee Free checker gives a first reading before paying
Cons	Still onboarding early users, so not fully proven in the field No free tier at a $99 entry point Starter caps tracking at 50 prompts	Pricing page states no limits on prompts or engines tracked Visibility scores are sampled estimates because AI answers vary between runs Customer results and user counts are vendor-reported
Company	Dynamiq	Signum.AI

Prices come from each vendor's pricing page, last checked 20260921. Check the vendor before you buy.

FAQ

Questions people ask

Is PromptSignal better than Signum.AI?

In our reviews PromptSignal scores 3.6 and Signum.AI scores 3.7. The better pick depends on the job. PromptSignal: Scores how AI models rank, describe and feel about your brand against competitors. Signum.AI: AI-visibility platform that tracks how a brand appears in ChatGPT, Perplexity and Gemini and what drives the citations.

Which is cheaper, PromptSignal or Signum.AI?

Signum.AI has the lower starting price: from $99/mo for PromptSignal and from $49/mo for Signum.AI.

Do PromptSignal and Signum.AI have free plans?

Only Signum.AI has a free plan.

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