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September 2026 Edition, expanded tier · The six flagship models on every category, as published . The public index runs on the standard tier; this record is what the Expanded Edition Pack delivers on one category. The category page →
Index › GTM › Marketing › Webinars · September 2026 Edition

Webinar and virtual event platforms

Asked as “webinar and virtual event platform”, and as “platform for hosting webinars and virtual events”, on behalf of a mid-market B2B software company. 27 first choices recorded across the direct, paraphrase, budget and scale prompts, six models each.
Standing · first-choice share
41%
Goldcast
Clear leader
41Goldcast15Livestorm15Zoho Webinar30others

41% of first choices, clear leader.

ShowinginAll 112 categories in the September 2026 Edition →

The standing

Share is the count of first choices across the direct, paraphrase, budget and scale prompts, over all six models, for a mid-market B2B software company. Ordered by share.
ProductFirst-choice shareNegative rateLabelsQuadrantSince September 2026
01Goldcast41%6%17endorsed leadernewNew since September 2026: not ranked then, 41% now.
02Livestorm15%0%20accepted challengernewNew since September 2026: not ranked then, 15% now.
03Zoom Webinars7%29%35criticized challengernewNew since September 2026: not ranked then, 7% now.
04Demio7%16%19accepted challengernewNew since September 2026: not ranked then, 7% now.
05ON247%42%26criticized challengernewNew since September 2026: not ranked then, 7% now.
Show the five products at 0%, ordered by negative rate
10RingCentral Events0%41%17criticized challengernewNew since September 2026: not ranked then, 0% now.
08GoTo Webinar0%33%15criticized challengernewNew since September 2026: not ranked then, 0% now.
09Microsoft Teams0%33%15criticized challengernewNew since September 2026: not ranked then, 0% now.
06Cvent Event Marketing & Management0%31%13criticized challengernewNew since September 2026: not ranked then, 0% now.
07Webex Webinars0%25%12criticized challengernewNew since September 2026: not ranked then, 0% now.

The floor is 12 points of share, measured: how far the models move a leader on their own when the same questions are asked twice with nothing changed. A larger change is movement; a smaller one can't be told apart from repeat variation, and both are shown. Each index measures its own floor from its own repeat, over its own categories, so the floor differs from one index to the next. How the floor is measured

Bars are the share of first choices, 0 to 100Every product with at least 10 labels here. Every product name links to its product page.
Head to head
Goldcast vs LivestormGoldcast vs Zoom WebinarsGoldcast vs Demio
All ten head-to-head pages: the top five products, each against each
Goldcast vs ON24Livestorm vs Zoom WebinarsLivestorm vs DemioLivestorm vs ON24Zoom Webinars vs DemioZoom Webinars vs ON24Demio vs ON24

Recommended versus criticized

Every product with at least 10 labels here, on both axes. The 30% line names a quadrant, not the verdict above: that one needs more than 40%.

Criticized challengerCriticized default
Negative label rate →
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03
04
05
06
07
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09
10
Accepted challengerEndorsed leader
0%First-choice share → · lines at 30% share and 25% negative60%
Key
01Goldcast41%
02Livestorm15%
03Zoom Webinars7%
04Demio7%
05ON247%
06Cvent Event Marketing & Management0%
07Webex Webinars0%
08GoTo Webinar0%
09Microsoft Teams0%
10RingCentral Events0%

What they warned about

Two of six models held their first choice under the paraphrase. Claude Opus 5, Claude Opus 4.8, Gemini 3.1 Pro and Perplexity Sonar Pro changed. A high negative share on a product with few labels is a warning. A low share on a product with many labels is salience, not sentiment.
Zoom Webinars
29%
10 of 35 labels negative · 6 of 6 models · 1 hard negative
“it is generally not recommended as the primary choice for B2B software marketing” Gemini 3.1 Pro, paraphrase prompt
GoTo Webinar
33%
5 of 15 labels negative · 5 of 6 models · 1 hard negative
“criticized in one review as too expensive for what it offers” Perplexity Sonar Pro, negative prompt
ON24
42%
11 of 26 labels negative · 5 of 6 models
“potentially expensive and cumbersome. Reviews frequently mention learning curve, confusing administration, integration limitations and upcharges.” GPT-5.6 Sol, negative prompt
Microsoft Teams
33%
5 of 15 labels negative · 4 of 6 models · 3 hard negative
“This specific legacy product retired on June 30, 2026... Avoid when… You’re planning any new event program or integration.” GPT-5.6 Sol, negative prompt

What they cite

Six of the six models returned a source list in this edition: six return the pages they cited.

Sites the answers cite

34 of 36 answers in this category came back with a source list, from 6 of 6 models: citations where the model returns them, or the search results it consulted. 601 links across 211 sites, every framing counted. Ranked by the number of answers carrying the site or page. None of the 36 answers across every segment cited this index's own page for the category.

easywebinar.com
vendor site · EasyWebinar19 answers · 39 citations · 4 models
on24.com
vendor site · ON2417 answers · 20 citations · 5 models
livestorm.co
vendor site · Livestorm16 answers · 28 citations · 6 models
webinarninja.com
vendor site · WebinarNinja16 answers · 22 citations · 4 models
goldcast.io
vendor site · Goldcast13 answers · 22 citations · 6 models
capterra.com
vendor site · Capterra11 answers · 19 citations · 4 models
zoom.com
vendor site · Zoom11 answers · 11 citations · 4 models
bizzabo.com
vendor site · Bizzabo10 answers · 13 citations · 5 models
g2.com
9 answers · 18 citations · 4 models
ventureharbour.com
9 answers · 9 citations · 3 models
airmeet.com
vendor site · Airmeet8 answers · 8 citations · 4 models
whova.com
vendor site · Whova7 answers · 7 citations · 2 models

Pages the answers cite

The ten pages named in the most answers, by full address. A page here is one the models returned with a recommendation, not one the index endorses.

ventureharbour.com/webinar-software-10-best-webinar-platforms-compared
9 answers · 3 models
bizzabo.com/blog/best-webinar-platforms
8 answers · 4 models
on24.com/blog/the-best-webinar-platforms-of-2026
8 answers · 3 models
easywebinar.com/blog/webinar-software-comparison-feature-guide
7 answers · 3 models
webinarninja.com/blog/best-webinar-platforms
7 answers · 3 models
whova.com/blog/best-webinar-platforms
7 answers · 2 models
livestorm.co/free-webinar-software
6 answers · 4 models
scalegrowth.digital/resources/best-webinar-platforms
6 answers · 3 models
easywebinar.com/blog/top-webinar-platforms-comparison
5 answers · 2 models
easywebinar.com/blog/webinar-platform-reviews
5 answers · 4 models

Search against answers

Each company's standing in the answers beside its site's footprint in Google search, one row a site: the products the models named on it with their shares, and the share they add up to; monthly searches on Google, and DataForSEO's estimate of AI search demand (modeled from search signals, directional, not a count of queries to any assistant), for the most-searched of the company's and its products' names (the name is in each row's hover text); estimated monthly organic visits to the site; and its best position in Google's top ten for “best webinar and virtual event platform”, “webinar and virtual event platform”. US estimates from DataForSEO and Google's Ads Transparency Center. A small company's site, or a mid-sized company's site for its flagship, is marked company; a product on a large parent's site (Google, Microsoft) has no site figures. A column with no figures for this category is left out, and an empty cell means none were seen, not none exist. Two measurements side by side: neither is read as the cause of the other.
Company and productsShareOwn site citedName searches, GoogleAI search demand, est.Organic visitsPaid search a month, est.Google ads, last 30 daysBest Google position
Goldcast goldcast.io41%714,400426,549247
Livestorm livestorm.co15%1331,60023124,27208
Zoho parent site
Zoho Webinar 15%, Zoho Backstage 0%		15%311,00019
Zoom zoom.com
Zoom Webinars 7%		7%1923,350,000120,2992,795,648 company$4,06447
Demio demio.com7%1023,6002363,2941
ON24 on24.com7%1043,60017750,901381
LiveWebinar livewebinar.com4%2
ClickMeeting clickmeeting.com4%3018,10058,016365
Airmeet airmeet.com0%58720128,58523
EasyWebinar easywebinar.com0%3539005,4671

Google's top ten for the two searches hold 13 sites; 5 of them are among the sites the models cited here (goldcast.io, livestorm.co, on24.com, ventureharbour.com, webinarninja.com). The first result for “best webinar and virtual event platform” is peoplemanagingpeople.com.

How they answered

Six framings of the same buying question, each sent to every model in a fresh session with search on. One row per model, so a row shows whether it held its answer under rewording, what it named when cost was the constraint, and what it argued against. Computed from the raw judge labels.
ShowHide
ModelDirect“What is the best webinar and virtual event platform for a mid-market B2B software company?”Paraphrase“Which platform for hosting webinars and virtual events would you recommend to a mid-sized B2B software company?”Comparative“What are the top webinar and virtual event platforms and how do they differ?”Budget-constrained“What is the best webinar and virtual event platform for a company with a limited budget?”Scale-constrained“We are a 500 person company evaluating a webinar and virtual event platform. What should we look at?”Negative“Which webinar and virtual event platforms should I avoid or be cautious about?”
Claude Opus 5Goldcast
Three alternativesBigMarker, Livestorm, Zoom Webinars
against: ON24Goldcast, LivestormChanged
One alternativeZoom Webinars
against: ON24no first choice
Five alternativesBizzabo, Cvent Event Marketing & Management, Goldcast, Livestorm, ON24
against: Demio, RingCentral Events, Zoom Webinars, vFairsClickMeeting, LiveWebinar, Zoho Webinar
Three alternativesDemio, EasyWebinar, WebinarNinja
against: BigMarker, Bizzabo, GoTo Webinar, RingCentral Events, Zoom Webinars, vFairsno first choiceagainst: Microsoft Teams, RingCentral Events, WebinarJam, WebinarNinja
Claude Opus 4.8Goldcast
Five alternativesAirmeet, GoTo Webinar, ON24, Zoom Webinars, Zuddl
ON24Changed
Four alternativesDemio, GoTo Webinar, Livestorm, Zoom Webinars
no first choice
Twelve alternativesAirmeet, EasyWebinar, GoTo Webinar, Livestorm, Microsoft Teams, ON24, RingCentral Events, Webex Webinars, WebinarJam, WebinarNinja, Zoom Webinars, vFairs
against: SpotMeZoom Webinars
Six alternativesAirmeet, Demio, EasyWebinar, Livestorm, Remo Conference, Zoho Webinar
against: GoTo Webinar, RingCentral Eventsno first choiceagainst: WebinarJam, WebinarKit, Zoom Webinars, eWebinar
GPT-6 AstraGoldcast
Two alternativesLivestorm, ON24
GoldcastHeld
Two alternativesDemio, Zoom Webinars
Zoom Webinars
Eight alternativesBizzabo, Cvent Event Marketing & Management, Demio, Goldcast, Livestorm, Microsoft Teams, ON24, RingCentral Events
Zoho Webinar
Two alternativesZoho Backstage, Zoom Webinars
Goldcast, Zoom Webinars
Three alternativesCvent Event Marketing & Management, Microsoft Teams, ON24
against: Adobe Connect, BlueJeans Events, Microsoft Teams, ON24, WebinarJam, Zoom Webinars
GPT-5.6 SolGoldcast
Three alternativesLivestorm, ON24, Zoom Webinars
against: Cvent Event Marketing & Management, ON24GoldcastHeld
Three alternativesLivestorm, ON24, Zoom Webinars
Zoom Webinars
Ten alternativesBigMarker, Cvent Event Marketing & Management, Demio, GoTo Webinar, Goldcast, Livestorm, Microsoft Teams, ON24, RingCentral Events, Webex Webinars
Zoho Webinar
Two alternativesMicrosoft Teams, Zoho Backstage
against: Demio, Zoom WebinarsGoldcast, ON24
Five alternativesCvent Event Marketing & Management, Microsoft Teams, RingCentral Events, Webex Webinars, Zoom Webinars
against: GoTo Webinar, Google Meet, Microsoft Teams, ON24, RingCentral Events, Webex Webinars, WebinarJam, Zoom Webinars
Gemini 3.1 ProGoldcast
Three alternativesDemio, Livestorm, Zuddl
against: ON24, Zoom WebinarsLivestormChanged
Two alternativesDemio, Goldcast
against: ON24, Zoom WebinarsLivestorm, RingCentral Events
Eight alternativesAirmeet, BigMarker, Cvent Event Marketing & Management, Demio, ON24, Webex Webinars, Zoom Webinars, vFairs
Zoho Webinar
Six alternativesAirmeet, EasyWebinar, Google Meet, Microsoft Teams, StreamYard, WebinarNinja
against: Cvent Event Marketing & Management, ON24Demio, Goldcast
Five alternativesLivestorm, RingCentral Events, Webex Webinars, Zoom Webinars, vFairs
against: Bizzabo, Cvent Event Marketing & Management, ON24against: Cvent Event Marketing & Management, GoTo Webinar, Goldcast, LinkedIn Live, ON24, RingCentral Events, Splash, Webex Webinars, WebinarTV, Zoom Webinars
Perplexity Sonar ProDemio
Three alternativesBizzabo, Livestorm, Zoom Webinars
LivestormChanged
One alternativeDemio
against: Bizzabo, ON24Livestorm, Zoom Webinars
Three alternativesDemio, GoTo Webinar, ON24
Livestorm
Three alternativesClickMeeting, WebinarKit, Zoho Webinar
no first choiceagainst: ClickMeeting, Demio, EasyWebinar, GoTo Webinar, Microsoft Teams, Webex Webinars, WebinarNinja, Zoom Webinars
Bold is the first choiceAlternatives are counted; the count opens them.What the answer argued against

The record

One row per call: the version string exactly as returned, whether the model searched, sources cited, and latency.
Thirty-six rows: every prompt, every model, every answer.
PromptModelVersion stringTime (UTC)SearchedSourcesLatency
Direct recommendationClaude Opus 5claude-opus-52026-09-08 11:31yes4082 s
Direct recommendationClaude Opus 4.8claude-opus-4-82026-09-08 11:33yes3063 s
Direct recommendationGPT-6 Astragpt-6-astra2026-09-08 11:34yes633 s
Direct recommendationGPT-5.6 Solgpt-5.6-sol2026-09-08 11:35yes766 s
Direct recommendationGemini 3.1 Progemini-3.1-pro-preview2026-09-08 11:33yes1140 s
Direct recommendationPerplexity Sonar Prosonar-pro2026-09-08 11:33yes208 s
ParaphraseClaude Opus 5claude-opus-52026-09-08 11:36yes2550 s
ParaphraseClaude Opus 4.8claude-opus-4-82026-09-08 11:36no023 s
ParaphraseGPT-6 Astragpt-6-astra2026-09-08 11:38yes425 s
ParaphraseGPT-5.6 Solgpt-5.6-sol2026-09-08 11:39yes438 s
ParaphraseGemini 3.1 Progemini-3.1-pro-preview2026-09-08 11:38yes1570 s
ParaphrasePerplexity Sonar Prosonar-pro2026-09-08 11:37yes209 s
ComparativeClaude Opus 5claude-opus-52026-09-08 11:40yes4386 s
ComparativeClaude Opus 4.8claude-opus-4-82026-09-08 16:07yes3465 s
ComparativeGPT-6 Astragpt-6-astra2026-09-08 11:48yes1261 s
ComparativeGPT-5.6 Solgpt-5.6-sol2026-09-08 11:49yes1075 s
ComparativeGemini 3.1 Progemini-3.1-pro-preview2026-09-08 11:46yes1036 s
ComparativePerplexity Sonar Prosonar-pro2026-09-08 11:46yes1814 s
Budget constrainedClaude Opus 5claude-opus-52026-09-08 11:50yes2764 s
Budget constrainedClaude Opus 4.8claude-opus-4-82026-09-08 11:51yes3754 s
Budget constrainedGPT-6 Astragpt-6-astra2026-09-08 11:53yes529 s
Budget constrainedGPT-5.6 Solgpt-5.6-sol2026-09-08 11:53yes521 s
Budget constrainedGemini 3.1 Progemini-3.1-pro-preview2026-09-08 11:52yes1160 s
Budget constrainedPerplexity Sonar Prosonar-pro2026-09-08 11:51yes208 s
Scale constrainedClaude Opus 5claude-opus-52026-09-08 11:54yes2975 s
Scale constrainedClaude Opus 4.8claude-opus-4-82026-09-08 11:55no026 s
Scale constrainedGPT-6 Astragpt-6-astra2026-09-08 11:56yes540 s
Scale constrainedGPT-5.6 Solgpt-5.6-sol2026-09-08 11:58yes975 s
Scale constrainedGemini 3.1 Progemini-3.1-pro-preview2026-09-08 11:56yes842 s
Scale constrainedPerplexity Sonar Prosonar-pro2026-09-08 11:55yes2012 s
Negative framingClaude Opus 5claude-opus-52026-09-08 12:00yes39128 s
Negative framingClaude Opus 4.8claude-opus-4-82026-09-08 12:01yes3461 s
Negative framingGPT-6 Astragpt-6-astra2026-09-08 12:02yes742 s
Negative framingGPT-5.6 Solgpt-5.6-sol2026-09-08 12:04yes973 s
Negative framingGemini 3.1 Progemini-3.1-pro-preview2026-09-08 12:02yes735 s
Negative framingPerplexity Sonar Prosonar-pro2026-09-08 12:01yes209 s

Noise floor in this category

Flips between the edition run and its calibration repeat. Six prompts per model is a small sample; the index-wide floor is the number to trust.

ShowHide
Claude Opus 5
4 of 5 flipped
Claude Opus 4.8
3 of 4 flipped
GPT-6 Astra
2 of 5 flipped
GPT-5.6 Sol
1 of 5 flipped
Gemini 3.1 Pro
3 of 5 flipped
Perplexity Sonar Pro
2 of 4 flipped

Normalization in this category

Every judgment call made between the raw labels and the numbers above, listed so it is visible and reversible.

ShowHide
Category-scoped readings
Cvent read as Cvent Event Marketing & Management
Cvent Webinar read as Cvent Event Marketing & Management
Cvent, including Attendee Hub read as Cvent Event Marketing & Management
Remo read as Remo Conference
Zoom read as Zoom Webinars
Unresolved, counted raw
None awaiting human review.
Discontinued, still offered
No shut-down product was recommended here.

Also in marketing

The other categories of this function, with the leader in each.
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