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 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 — expand one High keyword into 30-60 sub-queries
- AI Citation Readiness — score the article you publish for each High keyword
- Passage Retrievability — verify passages pass retrieval
- Keyword Inspection — SERP top-10 research
Fact-check notes and sources
- Google Search Generative Experience evolution: blog.google/products/search/generative-ai-search
- AI Overview rollout timeline: searchengineland.com/google-ai-overviews
- Query-intent patterns correlating with SGE: semrush.com/blog/sge-seo (secondary source, pattern-consistent across major trackers)
The $100 Network covers content planning against the AI-search surface. The predictor is how you decide where to invest publishing effort this quarter.
