# BigMarker vs ON24: which do AI models recommend for webinars, September 2026

GTM AI Recommendation Index, September 2026 Edition, Webinar and virtual event platforms. One of twelve models named BigMarker first on the direct prompt; zero named ON24. Page: https://gtm-ai-index.com/marketing/webinar-virtual-events/bigmarker-vs-on24/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| BigMarker | 2% | #7 of 19 | 5% | 21 | 11 of 12 |
| ON24 | 2% | #8 of 19 | 30% | 37 | 12 of 12 |

## The direct prompt, model by model

- Claude Haiku 4.5: bigmarker first (first choices: BigMarker) (alternatives: Demio, GoTo Webinar, Goldcast, Livestorm)
- GPT-5.4 mini: neither first, one named (first choices: Demio) (alternatives: ON24)
- Grok 4.1 Fast: neither first, one named (first choices: Demio) (alternatives: GoTo Webinar, Goldcast, Livestorm, ON24, Zoom Webinars)
- Qwen 3.7 Flash: neither first, one named (first choices: Goldcast) (alternatives: Livestorm, ON24, Zoom Webinars)
- Kimi K2: neither first, one named (first choices: Demio, Livestorm) (alternatives: BigMarker, Goldcast)
- Gemini 3.5 Flash: neither named (first choices: Goldcast) (alternatives: Airmeet, Demio, Livestorm)
- Perplexity Sonar: neither named (first choices: Goldcast) (alternatives: Bizzabo, GoTo Webinar, Livestorm)
- Mistral Small: neither named (first choices: Goldcast) (alternatives: Demio, Livestorm, Zoom Webinars)
- DeepSeek V4 Flash: neither named (first choices: Livestorm) (alternatives: Demio, Goldcast)
- Llama 4 Maverick: neither named
- GLM 4.7 FlashX: neither named (first choices: GoTo Webinar) (alternatives: Airmeet, ClickMeeting, Cvent, Demio, EventMobi, PheedLoop, WebinarJam, Whova, Zoom Webinars, Zuddl)
- MiniMax M2.5: neither named (first choices: Demio) (alternatives: Bizzabo, Goldcast, Livestorm)

## What the models said about BigMarker

- "BigMarker (poor offer pop-ups, glitchy screen sharing, pricey)" (Grok 4.1 Fast, negative prompt, soft negative)
- "Supports live, simulive, automated, and on-demand webinars natively from one platform, and fits mid-market to enterprise teams" (Claude Haiku 4.5, direct prompt, first choice)
- "Choose BigMarker or ON24 if you're running large-scale, highly controlled, analytics-heavy enterprise events" (Perplexity Sonar, paraphrase prompt, alternative)
- "Branded automation & series ... Evergreen sessions, custom landing pages | Pricing not transparent" (Grok 4.1 Fast, comparative prompt, alternative)

## What the models said about ON24

- "What to avoid for this use case- ON24 and Goldcast are powerful, but they're sales-quoted, enterprise-priced" (DeepSeek V4 Flash, paraphrase prompt, hard negative)
- "Avoid Unless Specific Need: ON24: Enterprise-focused, $10K+/year minimum, overkill for mid-market" (Kimi K2, direct prompt, hard negative)
- "you likely do not have the massive budget or the dedicated five-person IT production team required to run complex enterprise suites like ON24 or Cvent" (Gemini 3.5 Flash, paraphrase prompt, soft negative)
- "I'd generally recommend ON24 if webinars and virtual events are a core part of your marketing and sales funnel" (GPT-5.4 mini, paraphrase prompt, first choice)
- "Best for: Mid-to-enterprise B2B marketing teams... Where it struggles: Expensive, complex to set up, and can be overkill for smaller companies." (Gemini 3.5 Flash, comparative prompt, alternative)
- "Choose BigMarker or ON24 if you're running large-scale, highly controlled, analytics-heavy enterprise events" (Perplexity Sonar, paraphrase prompt, alternative)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.