Bugsnag and Sentry were the only two error monitoring tools named in all 6 of 6 answers when we asked ChatGPT and Gemini which tool a buyer should pick. We ran six buyer questions on 2026-08-03, each with one live web search, and recorded every product named plus every source domain behind the answers. This page is built from that data and nothing else.
Rollbar came next, named in 5 of 6 answers, missing only the "small teams" question. Raygun followed at 4 of 6, and Datadog at 3 of 6. After that the field thins out fast: six tools tied at 2 of 6 (AppSignal, GlitchTip, LogRocket, New Relic, PostHog and SigNoz), and five more were named just once each.
The answers came from ChatGPT and Gemini only, so read every figure as "out of 6." A tool named in 3 of 6 answers was picked by half the questions, not by half the internet. Six questions is a small, honest sample, and the point is not a leaderboard: it is to see which tools the assistants reach for, and which pages they read to get there.
How the shortlist changed when we changed one word
Only Sentry and Bugsnag survived all six phrasings at 6 of 6. Every other tool moved in or out of the shortlist depending on which adjective we added, which is the whole story of this measurement.
The bare "best error monitoring tools" question returned the widest list, 8 tools: Sentry, Rollbar, PostHog, Bugsnag, GlitchTip, SigNoz, Datadog and SmartBear. SmartBear appeared here and nowhere else across the six questions, its single mention out of 6.
"Best free error monitoring tools" returned the shortest list, 5 tools: Sentry, Bugsnag, LogRocket, Rollbar and Raygun. Every one is a commercial product with a free tier. The genuinely open-source, self-hostable options did not show up under "free" at all.
Instead, the open-source tools surfaced under "most affordable error monitoring tools," a 7-tool list: Rollbar, Raygun, Bugsnag, Sentry, PostHog, GlitchTip and SigNoz. GlitchTip and SigNoz, both open source, were counted under "affordable" and under the bare "best," but never under "free." Change one word from "free" to "affordable" and the answer swapped commercial free-tiers for open-source projects.
"Best error monitoring tools for small teams" was the most distinctive list of the six. It was the only question to name Honeybadger and Airbrake, at 1 of 6 each, and it dropped Rollbar entirely even though Rollbar scored 5 of 6 overall. Add "for small teams" and the assistants traded the category's number-three tool for two niche names.
The two enterprise names behaved the opposite way. Datadog (3 of 6) appeared in the bare "best" and the two open-ended questions, and New Relic (2 of 6) appeared only in the open-ended "what should I use" and "recommendations" questions. Both vanished from the "free" and "affordable" queries completely. Ask about cost and the expensive tools quietly leave the room.
Scout was the clearest case of the assistants naming one tool two ways: "Scout" once under "what should I use," and "Scout Monitoring" once under "recommendations." We report both labels exactly as measured, at 1 of 6 each, rather than merging them into a count of 2 the data never produced.
Where the answers actually came from
Four domains fed all 6 answers: reddit.com, sentry.io, raygun.com and saucelabs.com. Reddit was the only community forum in the entire source set, and it was cited in every single question, 6 of 6. No Quora, no Stack Overflow and no Hacker News appeared anywhere.
Here is the finding that matters most: 9 of the 12 source domains belong to a tool that got named. sentry.io (6 of 6), raygun.com (6 of 6), posthog.com (5 of 6), logrocket.com (4 of 6), rollbar.com (4 of 6), scoutapm.com (4 of 6), bugsnag.com, glitchtip.com and signoz.io all fed answers, and Sentry, Raygun, PostHog, LogRocket, Rollbar, Scout, Bugsnag, GlitchTip and SigNoz were all named. In this category the vendors are largely writing the answer about themselves.
Sentry is the complete loop: sentry.io fed all 6 answers, and Sentry was named in all 6. Its own blog is both the source and the recommendation. That is the strongest position in the whole measurement.
Raygun shows the softer version of the same move. raygun.com fed all 6 answers, but Raygun the product was named in only 4. Its roundup blog was cited as a source even in the two questions that did not pick Raygun. Publishing the comparison gets you cited as the reference even when you are not the pick, and being the source is what feeds the model. posthog.com did the same, feeding 5 answers while PostHog itself was named in 2.
Bugsnag is the counter-example that should encourage everyone else. Bugsnag was named in all 6 answers, yet bugsnag.com fed only 1. It rode Reddit and other companies' roundups to the top without leaning on its own domain. You do not strictly need to publish the roundup yourself if enough others name you in theirs.
Two of the three neutral domains were third-party roundups rather than error tools: saucelabs.com (6 of 6) and inspectlet.com (4 of 6). Neither Sauce Labs nor Inspectlet is an error monitoring product, and neither was named as one. They earn their citations purely by publishing "best error monitoring tools" list posts.
No review directory appeared at all. G2, Capterra and TrustRadius were absent from every one of the 6 answers. In this category the assistants leaned on vendor blogs, independent roundups and Reddit, not the star-rating sites.
What a vendor here would do to get named
If you sell an error monitoring tool and you are not in this data, the fix is not more market share, it is more presence in these exact sources. The 12 domains above, plus the Reddit threads behind them, are what the assistants read. Being the biggest tool in the market did not put you in the answer; being on the page the assistant retrieved did.
The concrete moves fall out of the numbers. Publish your own honest comparison post, because 9 of 12 source domains were vendor blogs doing exactly that. Get named in the independent roundups on saucelabs.com and inspectlet.com, which fed 6 and 4 answers without selling a tool of their own. And show up in the Reddit threads, cited in all 6 of 6 answers, because that was the only community source the assistants trusted.
The order matters: the source list, not the market, decides who is named. Sentry sat at the top because sentry.io was retrieved in all 6 answers, and Bugsnag matched it at 6 of 6 because enough third parties named Bugsnag, not because either won a feature war. Change which pages get retrieved and you change the answer.
The full list, counted
| Product | Named in | Share |
|---|---|---|
| Bugsnag | 6 of 6 | 100% |
| Sentry | 6 of 6 | 100% |
| Rollbar | 5 of 6 | 83% |
| Raygun | 4 of 6 | 67% |
| Datadog | 3 of 6 | 50% |
| AppSignal | 2 of 6 | 33% |
| GlitchTip | 2 of 6 | 33% |
| LogRocket | 2 of 6 | 33% |
| New Relic | 2 of 6 | 33% |
| PostHog | 2 of 6 | 33% |
| SigNoz | 2 of 6 | 33% |
| Airbrake | 1 of 6 | 17% |
| Honeybadger | 1 of 6 | 17% |
| Scout | 1 of 6 | 17% |
| Scout Monitoring | 1 of 6 | 17% |
| SmartBear | 1 of 6 | 17% |
Scout and Scout Monitoring are the same vendor recorded under two labels, one mention each. We list them as two separate rows because that is how the assistants named them, and merging them would invent a count of 2 the measurement never showed. Airbrake, Honeybadger and SmartBear round out the single-mention tail at 17% each.
Why we ran this
Glotier does not sell an error monitoring tool, so we are correctly absent from all 6 of these answers. We did not invent a mention for ourselves, and you should be wary of any vendor page that does. This category is not ours to win.
What you just read is the whole of what Glotier does, pointed at someone else's category. We take the six buyer questions in your market, put them to ChatGPT and Gemini with a live search, and show you exactly who gets named and which pages fed the answer, so you can go earn your way onto those pages. The check is free, there is no account, and it takes about a minute.