# Predicting Which Keywords Fire AI Overviews Without a Paid SERP API

Google AI Overviews fire more often on informational, how-to, comparison, and 'best/top' queries than on navigational or transactional ones. Paid SERP-feature trackers cost $99-$399/mo to report this. The new heuristic scores each keyword in your list from the query structure alone — no SERP API.

Author: J.A. Watte
Published: April 28, 2026
Source: https://jwatte.com/blog/blog-tool-aio-trigger-predictor/

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_Part of the [AEO / GEO / AI-search audit tool stack](/blog/blog-new-aeo-audit-tools-2026/).  See the pillar post for the full catalog of sibling audits and where this one fits in the lineup._

You don't need a paid SERP API to predict which of your keywords will trigger Google's AI Overviews. The trigger patterns are visible in the query structure itself.

The [AIO Trigger Predictor](/tools/aio-trigger-predictor/) scores each keyword in your list on seven signals that correlate with AIO firing. It won't match a paid SERP-feature tracker's daily readings, but it gets you the shape of your keyword portfolio: which queries will pay attention to your AEO investment and which ones won't.

## Signals the predictor scores

**Positive (push score up):**
- **Question shape** (+25): "what/who/why/how/when/where/which/can/do/is/are…"
- **How-to / tutorial** (+20): "how to / tutorial / guide"
- **Comparison** (+20): "vs / compared to / difference between / pros and cons"
- **Best / top / cheapest** (+15): superlative adjectives
- **Numeric listicle** (+10): "top 5 / 7 ways / 10 reasons"
- **Local** (+10): "near me / in [city]"
- **Length** (+15 if ≥5 words, +8 if ≥3, -20 if 1 word)

**Negative (push score down):**
- **Navigational** (-30): "login / sign in / download / homepage / app"
- **Transactional** (-15): "buy / price / pricing / discount / coupon / sale"
- **Branded without question/comparison** (-10): known brand terms

Baseline 30, clamped 0-100. Tier: High ≥ 70, Medium 45-69, Low < 45.

## What the predictor is NOT

- Not a live SERP check. It scores structure, not whether the SERP actually fires an AIO right now.
- Not keyword-difficulty. A High-AIO keyword can still be impossible to rank for without authority.
- Not intent classification in the strict sense. It mixes intent with SERP-shape heuristics because both predict AIO firing.

Use it as a triage pass for a 100-500 keyword list. Pick the 20-40 High keywords, build out AEO-optimized content (passage-retrievability, fact-density, direct-answer openers), and leave the Low keywords to traditional SEO or skip entirely.

## Related reading

- [Query Fan-Out Generator](/tools/query-fan-out/) — expand one High keyword into 30-60 sub-queries
- [AI Citation Readiness](/tools/ai-citation-readiness/) — score the article you publish for each High keyword
- [Passage Retrievability](/tools/passage-retrievability/) — verify passages pass retrieval
- [Keyword Inspection](/tools/keyword-inspection/) — SERP top-10 research

## Fact-check notes and sources

- Google Search Generative Experience evolution: [blog.google/products/search/generative-ai-search](https://blog.google/products/search/generative-ai-search/)
- AI Overview rollout timeline: [searchengineland.com/google-ai-overviews](https://searchengineland.com/)
- Query-intent patterns correlating with SGE: [semrush.com/blog/sge-seo](https://www.semrush.com/blog/) (secondary source, pattern-consistent across major trackers)

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*The $100 Network covers content planning against the AI-search surface. The predictor is how you decide where to invest publishing effort this quarter.*


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