Otterly AI vs PromptSignal
Updated onCompare Otterly AI and PromptSignal side-by-side. See how they stack up on features, pricing, and target market.
Otterly AI
AI search monitoring and GEO auditing tool that tracks AI Overviews, ChatGPT, Perplexity, Gemini and other models to surface citations, visibility gaps and optimisation opportunities.
Starts at $29 / month
Has a free trial
vs
PromptSignal
PromptSignal monitors how leading AI models mention, rank, and describe your brand and provides visibility scores, rankings, sentiment, and recommendations to help marketing teams optimize their presence in LLM-generated answers.
Starts at $99 / month
Which should you choose?
Otterly AI
You want a mature, SEO-focused AI search monitoring platform that tracks citations and brand visibility across AI search engines (Google AI Overviews/Mode, ChatGPT, Perplexity, Gemini, Copilot) and includes GEO audits and AI keyword research at a lower starting price.
PromptSignal
You want deep LLM brand analytics—visibility, sentiment, rankings, and competitor benchmarking—across many foundation models (ChatGPT, Claude, Perplexity, Gemini, OpenAI, Anthropic, etc.) and are willing to pay more for those narrative metrics and early‑access innovation.
Typical cost comparison
Scenario: Small marketing team starting on the lowest paid tier, billed monthly.
Otterly AI
$29 per month
PromptSignal
$99 per month
Otterly AI saves you $70 per month in this scenario.
Key differences
| Category | Otterly AI | PromptSignal | Why? |
|---|---|---|---|
| Security & Compliance | Both tools emphasize strong security and GDPR compliance—PromptSignal highlights SOC 2 and GDPR via its Dynamiq platform, while OtterlyAI details AWS SOC1/SOC2- and ISO 27001‑certified data centers plus GDPR‑aligned data handling and encryption. | ||
| LLM Brand Metrics & Narrative Insight | PromptSignal emphasizes brand visibility, sentiment scores, ranking position, competitor tracking, and prompt performance across many models (e.g., OpenAI, Anthropic, Gemini, Perplexity), while OtterlyAI’s analytics are more centered on AI search surface share of voice and citation presence. | ||
| Maturity & Time-to-Value | OtterlyAI is a fully launched product with 10,000+ users, recognition as a Gartner Cool Vendor, and instant self‑serve free trials, while PromptSignal is still onboarding early‑access users who join via demo/early‑access sign‑up flows. | ||
| Pricing | OtterlyAI’s Lite plan starts at $29/month with a 14‑day free trial, while PromptSignal’s Starter plan is $99/month with no public free‑trial offer, making Otterly significantly cheaper to start. | ||
| SEO & AI Search Optimization Features | OtterlyAI is built around AI search visibility and GEO, offering AI keyword research, link citation analysis, and a Generative Engine Optimization audit that evaluates 25+ on‑page factors, whereas PromptSignal focuses on monitoring model answers and does not expose comparable SEO auditing tooling. |
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Starts at
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Website Tracking
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News & Social Monitoring
News mentions, Reddit posts, and competitor announcements
SEO & Ads Intelligence
Keyword rankings, backlinks, and Google Ads creatives
AI Signal Detection
Filters out noise, surfaces only what matters
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Daily digests delivered where your team already works