FFrontier AEO trackerV5 research snapshot · September 2026

A LATENT SPACE RESEARCH PROJECT

When AI makes the shortlist,
who gets chosen?

We asked frontier AI agents to recommend products across 133 categories. This is an open window into their choices: the favorites, the disagreements, and the reasons behind them.

AEO means answer engine optimization—understanding how products show up in AI answers. Here, you can go beyond a mention count and see what agents actually recommend.

Saved research snapshotV5 across situationsSnapshot updated Methods & limitations ↗

WHAT SURPRISED US

Visibility is only the beginning.

All notable findings ↗

A high mention rate can hide a low chance of being chosen. A familiar favorite can disappear when you change the model. The interesting part is understanding why.

01 / MENTIONED ≠ CHOSEN

Kysely appears everywhere. It wins once.

1 / 42answers pick it first

Kysely appears in 42 of 42 validated ORM / database-tool answers (100%), but is first choice in only 1 (2.4%). Visibility alone misses the difference between being discussed and being recommended.

02 / THE MODEL CHANGES THE WINNER

Sol picks Modal. Astra picks E2B.

6/6 · 6/6first choices for two different sandbox providers

For the same AI-sandbox scenario, GPT-5.6 Sol picks Modal first in all 6 frames; GPT-6 Astra picks E2B in all 6. Consistency within a model does not mean agreement across models. These are six phrasings, not independent repeat trials.

03 / READ THE SCORE, THEN THE ROLES

CodeRabbit leads. Its score is not its pick rate.

62.9%overall AEO score · 42.9% first-choice rate

CodeRabbit leads the code-review leaderboard with a 62.9% overall score, while being first choice in 42.9% of validated answers. Alternatives and supporting mentions also contribute; eligible objections subtract. The roles explain what a single percentage cannot.

Findings describe this study’s saved answers. Rates measure observed recommendations, not product quality or market share. Each link leads to the underlying research view.

THINK YOU KNOW WHAT AI WILL PICK?

Play the shortlist.

Start with three familiar AI products. Guess the order, reveal the rankings, and skip anything you don’t know.

Guess the rankings →

MAKE THE RESEARCH YOUR OWN

Pick a question. Follow the evidence.

THE EXPERIMENT, IN PLAIN ENGLISH

Same buyer scenario.
Different ways of asking.

We ran real AI agents through their native tools and harnesses, saved their answers, then assessed the products they recommended, mentioned, or objected to.

Read the full methodology ↗
  1. Start with 133 category-level buyer scenarios.

    From coding agents and AI infrastructure to business software and professional services, each category gives the agent a concrete decision to make.

  2. Ask 7 model configurations in 6 ways.

    A baseline plus direct fit, practitioner choice, comparison, tradeoffs, and conditional recommendation. These are related phrasings of one scenario, not independent trials.

  3. Validate the answers and resolve product names.

    5,566 usable answers out of 5,586 saved. Product identities and roles are reviewed against the evidence; 20 excluded answers stay out of score denominators.

  4. Score the recommendation, then explain it.

    Separate first choices, alternatives, supporting mentions, and objections. Average across available configurations and link the results to prompts, answers, and research notes.

FROM A SCORE TO AN EXPLANATION

Find out where your product stands.

Start with a category. See who appears. Then inspect why.

Explore 133 categories ↗