New: the nine ways developer tools go invisible in AI answers.
citon

Answers

Original research on how AI picks what to recommend.

We are early, so we would rather show the method than a cherry-picked number. Everything here comes from our own runs, and every figure carries the source it came from. Our own measurement so far covers 901 citations across 60 answers (source: our own runs), of which 91.5 percent pointed off-site, spread over 82 distinct hosts.

Short answer

What is on the Citon blog?

Original research on how AI assistants choose which tool to recommend. Everything here comes from our own runs, and every figure carries its source.

Schema markup and AI citations. A treated group of 1,885 pages and a matched control group of 4,000 pages declining together, with the gap between them labelled as the only thing a schema test can actually measure.
AI citations

Schema Markup for AI Search: How to Isolate the Variable (2026)

Ahrefs tracked 1,885 pages adding schema and citations barely moved. Here is how to isolate structured data as a variable, and what a null result looks like.

80 min

The first result for AI Overview optimization is Google's own documentation, and it says there are no additional requirements and no special optimizations necessary. Nine of the ten pages below it sell the opposite.
AI citations

AI Overview Optimization: What Actually Changes

Google ranks first for "AI Overview optimization" and says no special optimization exists. What the docs state, what the studies measured, what nobody tested.

42 min

OpenAI runs four crawlers. GPTBot is training, OAI-SearchBot is search, ChatGPT-User is a live fetch, OAI-AdsBot checks ad landing pages. Only one of the four decides whether ChatGPT search can cite you.
AI citations

GPTBot, OAI-SearchBot, and Which Crawler Actually Decides Whether ChatGPT Can Cite You

OpenAI runs four crawlers and only one of them decides whether ChatGPT search can cite you. Which one it is, and why the popular warning runs backwards.

46 min

Does llms.txt actually move AI citations. Forty documentation sites probed live, and the test design that would settle the question.
AI citations

Does llms.txt actually move AI citations, and how would you tell

Every page ranking for this term explains what llms.txt is. None answers whether it changes anything. What 40 sites deploy, and the test that would tell.

43 min

How many prompts and how many repeats. Sizing a prompt set from a measured instability rate rather than from a recommended number.
Measurement

Prompt Tracking, How Many Prompts and How Many Repeats Before a Change Is Real

Every page ranking for prompt tracking says how to pick prompts. None says how many, or how many repeats, before a weekly change stops being noise.

44 min

How to track AI visibility. The category solved collection and left interpretation alone, so the instrument is the deliverable.
Measurement

How to Track AI Visibility, and How to Read What It Tells You

The trackers solved collection and left interpretation alone. The record schema, the sampling trade, the null distribution, and whether your design could see a win.

41 min

LLM SEO, what it actually is and what the work looks like. Nine of ten ranking guides explain the tactics, none shows the measurement.
AI citations

LLM SEO, what it actually is and what the work looks like

Google says its AI features run on the same ranking systems as Search, so the tactics are familiar. What changed is how you tell whether the work landed.

46 min

Nine AirOps alternatives split across two lanes, content production and pure AI-citation measurement, with AirOps itself sitting between both.
Measurement

AirOps Alternatives: Content-AEO vs Pure Measurement

Nine real AirOps alternatives, split into content production and pure measurement, plus the buyer split most vendor comparison pages miss entirely.

25 min

Seven AI visibility tools compared on what they track and what they cost, and the measurement gap none of them closes on its own.
Measurement

Best AI Visibility Tools (and Where a Tool Alone Runs Out)

Seven AI-visibility tools compared on what they actually measure and what they cost, plus the one question none of them can answer on their own.

24 min

Profound alternatives compared on price and what they track, built from the real threads where teams explain why they switched.
Measurement

Profound Alternatives: What Teams Actually Switch To (and Why)

Five real alternatives to Profound compared on what they track and what they cost, built from the actual switching threads where teams explain why they left.

23 min

Best AI SEO agency for developer tools and API companies. A five-question checklist for evaluating an AEO vendor before signing, built from what real buyers report going wrong.
AI citations

Best AI SEO Agency for Developer Tools and API Companies

A five-question checklist for vetting an AI SEO agency, built from what real developer-tool buyers report going wrong, not a ranked vendor list.

24 min

Reddit's public robots.txt disallows every crawler, yet Google shows Reddit results with descriptions. The thread is the indexable unit, not the comment.
AI citations

Does Google index Reddit comments? What actually counts

Reddit's robots.txt disallows every crawler, yet Google shows Reddit with full descriptions. Here is what is actually indexed, measured rather than assumed.

25 min

Half of the content AI engines cite is under 13 weeks old. A decay curve, not a freshness bonus, and not proof that a single citation drop is real decay.
AI citations

AI Citation Decay, Half-Life, and When a Drop Is Real

A competitor platform now tracks how long an AI citation survives. We checked the idea against our own volatility data. A single drop is not proof of decay.

23 min

When a developer asks an AI which API to use, does Reddit marketing actually move the answer. Reddit's own disclosed AI Overview citation share is 21 percent, with no published held-out test showing that marketing on it causes a citation.
Developer tools

Does Reddit Marketing Move AI API Recommendations?

Reddit discloses a 21% AI Overview citation share and 46.7% on Perplexity. Four agencies pitch Reddit marketing as the fix, none publish a held-out test.

23 min

Profound pricing explained. Starter 99 USD a month, Growth 399 USD a month, Enterprise reported to start near 1,000 USD a month per brand per country.
Measurement

Profound Pricing: What an AI Visibility Tool Costs

Profound publishes two tiers and hides the third. What Starter and Growth gate, and what Enterprise costs per brand per country, per one practitioner's report.

23 min

A 2-million-citation study names what predicts an AI citation. A controlled test on your own pages is what proves whether your work moved it.
AI citations

What Predicts an AI Citation Is Not What Proves Yours

DiscoveredLabs measured 2 million AI citations and found what correlates with getting cited. Correlation across pages you don't own isn't proof for yours.

22 min

AI visibility tools show you a score. They can't tell you if it was you. A decision framework for buyers who already own a monitoring tool and still cannot answer whether their AEO spend worked.
AI citations

AI Visibility Tools Show a Score, Not Whether It Was You

Ten guides rank the best AI visibility trackers. None of them tells you whether the score moving was your AEO spend or the model changing its mind on its own.

23 min

Reddit is cited by AI. That is not proof. Reddit is 67.8 percent of ChatGPT's non-cited URLs, per Ahrefs across 1.4 million prompts.
AI citations

Reddit is cited by AI. That is not a reason to buy upvotes.

Published Reddit citation shares run from 2% to 46.7%, and one study puts Reddit at 67.8% of every URL ChatGPT retrieves and then declines to cite.

23 min

Reddit blocks 23 million spam views a day. An argument that platform authenticity enforcement is becoming an input to the systems answer engines read from when they decide what to cite.
AI citations

Reddit Blocks 23M Spam Views a Day. A Citation Signal.

Reddit published its spam enforcement numbers for users and moderators. Read from the AI-citation side, it is an argument about which sources deserve quoting.

26 min

What is answer engine optimization. How AI assistants actually decide what to cite, informational cluster, 27,100 searches a month for the bare term "aeo" alone.
AI citations

What Is Answer Engine Optimization? How AI Picks Sources

What answer engine optimization means, how AI assistants decide what to cite, and what our own measurement work says about proving it caused a citation gain.

23 min

Why a single AI visibility score is noise. 12 money queries, 5 identical repeats each, 7 flipped outcome.
Measurement

Why a single AI visibility score is noise

Twelve money queries, five identical repeats, one model, one day. Seven changed their answer, which breaks every before-and-after published in this category.

24 min

Frequently asked questions

What does the Citon blog cover?
How AI assistants choose the sources they cite, what the evidence actually supports about that, and what has to be true of a measurement before a change in citations can be credited to the work rather than to the churn.
Is the research here original, or a summary of other people's?
Original. Posts draw on our own runs, and where a figure comes from somewhere else it is attributed at the point of use rather than in a footnote. Our own measurement so far covers 901 citations across 60 answers, of which 91.5 percent pointed off-site, spread over 82 distinct hosts.
How often is it updated?
New posts publish when a measurement is finished rather than on a fixed calendar. Existing posts are revised in place when a rerun changes what the evidence supports, and the change date moves with the content.
Can I reuse a chart or a figure from a post?
Yes, with a link back to the post it came from. Please take the number and its stated basis together, since most figures here are only meaningful alongside the sample and the window they were measured over.

Every answer

The full index, by category.

Three categories, and every post in each one. The card grid above shows what is newest; this shows everything, so nothing published here is reachable only from a sitemap.

The surfaces a developer actually evaluates from, why docs and community threads decide the answer, and where API buyers look before they ever visit you.

Start here

See what your buyers are actually being told.

Four questions, run against live AI answers, walked through on a call. No deck.

Ask for the Gap Report