TAMGIO vs Otterly.AI: Which AI-Visibility Tool Should You Choose?
TAMGIO and Otterly.AI are both GEO (Generative Engine Optimization) tools that measure how often a brand gets mentioned in AI answers from ChatGPT, Perplexity, and similar engines. TAMGIO backs every metric with raw API evidence — citation, timestamp, no screenshots — and keeps its formulas fully public; Otterly.AI bundles more engines into one dashboard and publishes pricing starting at $29/month. Which one fits depends on whether you value evidence depth or engine breadth and a low, transparent entry price.
What TAMGIO does
TAMGIO's ongoing tracking runs on three engines — OpenAI web_search (model gpt-4.1-mini), Perplexity Sonar (always grounded), and Gemini grounded search. Google AI Overviews (via SerpAPI, SERP-embedded) is added in Audit Mode, for four measured surfaces in total. Every measurement uses an N-sample approach — AI answers are non-deterministic, so a single-shot check isn't trustworthy. Users write or AI-generate 30-40 candidate prompts (best-of, comparison, how-to, local, pricing intents), then approve them. Beyond ongoing tracking, Audit Mode runs a one-button, one-time domain audit — roughly 20-30 auto-generated prompts scanned once across all 4 engines, producing an audit report and PDF.
TAMGIO's core differentiator is its honesty framework: only grounding-verified answers count toward metrics, and errors or "no_surface" results are shown openly rather than hidden. There are no percentage promises ("go from 60% to 90%") because AI answers are non-deterministic — no tool can honestly guarantee that. Every formula is public, and it's the same code powering the dashboard, the report, and the PDF. Each metric carries a dashed underline; clicking it opens the raw API response, citations, and timestamp behind that number.
What Otterly.AI does
Otterly.AI is an Austria-based AI search monitoring platform that tracks brand mentions, citations, and share-of-voice across ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, and Microsoft Copilot. It positions itself as an accessible, self-serve entry point rather than a heavyweight enterprise suite. The Lite plan starts at $29/month (15 tracked prompts, 4 core engines, 1,000 GEO URL audits, 50+ markets) with a 7-day no-credit-card trial. Otterly.AI also has a dedicated GEO Audit tool that scores a site's or a piece of content's citability — content depth, structure, freshness, structured data, crawlability — plus a separate "AI readiness" score.
Key differences
| Feature | TAMGIO | Otterly.AI |
|---|---|---|
| Engines covered | OpenAI web_search, Perplexity Sonar, Gemini grounded search (ongoing); Google AI Overviews added in Audit Mode | ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Microsoft Copilot (Gemini/AI Mode are paid add-ons on lower tiers) |
| Raw evidence behind every metric | ✓ | Not publicly documented |
| Public pricing | Not yet announced (3 planned tiers) | From $29/mo (Lite), 7-day no-card trial |
| Prompt management | 30-40 prompts, user-written or AI-generated, across 5 intent types | 15-400 tracked prompts depending on tier |
| One-time domain audit | Audit Mode — one button, ~20-30 prompts, all 4 engines, PDF | GEO Audit — content citability score (structure, freshness, crawlability) |
| Public, no-black-box formulas | ✓ | Not publicly documented |
Where Otterly.AI genuinely does well
- Broad engine coverage in a single dashboard — ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, and Microsoft Copilot.
- Publicly listed, low-cost entry point: from $29/month with a 7-day no-credit-card trial.
- A dedicated GEO Audit tool that scores content citability (depth, structure, freshness, structured data, crawlability) plus an AI-readiness score.
- Established market traction: G2 named it a High Performer in Answer Engine Optimization (Winter 2026), and the company claims 30,000+ marketing-professional users.
Which one should you choose?
If your priority is starting cheaply, tracking the widest set of engines (including Copilot) in one place, and auditing your site's technical citability, Otterly.AI is a strong choice — its pricing transparency alone is a real advantage. If your priority is being able to see the raw evidence behind every number, public formulas, and honest reporting of negative results like "no_surface" instead of them being smoothed over, TAMGIO's honesty framework is built for exactly that. TAMGIO's own pricing isn't public yet — that's a real limitation today, and we're not going to pretend otherwise.
FAQ
- What's the main difference between TAMGIO and Otterly.AI?
- The biggest difference is the evidence model: TAMGIO shows the raw API response, citations, and timestamp behind every metric, and keeps all its formulas public. Otterly.AI covers more engines (including Copilot) in one dashboard and publishes transparent pricing, but raw-evidence access isn't publicly documented.
- How much does Otterly.AI cost?
- Based on our research, Otterly.AI publishes 3 tiers: Lite at $29/month (15 prompts), Standard at $189/month (100 prompts), and Premium at $489/month (400 prompts), with roughly 15% off on annual billing. Gemini and Google AI Mode tracking are paid add-ons on lower tiers. These figures come from cross-checked third-party sources rather than a live checkout page, so treat them as reasonably current rather than verified.
- How much does TAMGIO cost?
- Pricing isn't public yet. The landing page shows 3 planned tiers — Weekly Scan, Daily + Competitors, and Agency/White-label — but no dollar figures are announced.
- Which AI engines does TAMGIO track?
- Ongoing tracking runs on three engines — OpenAI web_search (gpt-4.1-mini), Perplexity Sonar, and Gemini grounded search. Google AI Overviews (via SerpAPI) is added in Audit Mode, for four measured surfaces in total. Otterly.AI additionally covers Google AI Mode and Microsoft Copilot.
- Is TAMGIO's Audit Mode the same as Otterly.AI's GEO Audit?
- No, they measure different things. TAMGIO's Audit Mode measures how often a brand is actually mentioned or cited in live AI answers (roughly 20-30 prompts, 4 engines, one click). Otterly.AI's GEO Audit tool scores a site's content for technical citability — structure, freshness, structured data — the cause side rather than the outcome side.