# Meeting scheduling: what AI models recommend, September 2026

GTM AI Recommendation Index, September 2026 Edition. Asked as "meeting scheduling tool for sales teams" and as "appointment scheduling software", six framings each, to twelve models with search on, on behalf of a mid-market B2B company. Page: https://gtm-ai-index.com/sales/meeting-scheduling/

**Standing:** Calendly leads with 59% of first choices; verdict clear leader. 49 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Calendly | 59% | 13% | 60 |
| 2 | HubSpot Meetings | 14% | 7% | 44 |
| 3 | Chili Piper | 12% | 21% | 34 |
| 4 | Cal.com | 4% | 0% | 36 |
| 5 | RevenueHero | 4% | 0% | 12 |
| 6 | SavvyCal | 0% | 5% | 20 |
| 7 | Acuity Scheduling | 0% | 21% | 14 |
| 8 | Microsoft Bookings | 0% | 29% | 14 |
| 9 | Doodle | 0% | 30% | 20 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Calendly; alternatives Chili Piper, HubSpot Meetings
- GPT-5.4 mini: HubSpot Meetings, HubSpot Sales Hub; alternatives Calendly, Chili Piper
- Gemini 3.5 Flash: RevenueHero; alternatives Calendly, Chili Piper, HubSpot Meetings, LeanData BookIt
- Perplexity Sonar: HubSpot Sales Hub; alternatives Calendly, Chili Piper
- Grok 4.1 Fast: Calendly; alternatives Cal.com, Chili Piper, HubSpot Meetings
- Mistral Small: Calendly; alternatives Chili Piper, HubSpot Meetings, RevenueHero
- DeepSeek V4 Flash: Calendly, HubSpot Meetings; alternatives Cal.com, RevenueHero
- Llama 4 Maverick: HubSpot Sales Hub; alternatives ZoomInfo GTM Workspace
- Qwen 3.7 Flash: Calendly, Chili Piper; alternatives Topmate / Scheduling.link
- Kimi K2: Calendly; alternatives Cal.com, Chili Piper, HubSpot Meetings, SavvyCal
- GLM 4.7 FlashX: Calendly; alternatives Cal.com, Chili Piper, HubSpot Meetings, SavvyCal
- MiniMax M2.5: Calendly; alternatives Cal.com, Chili Piper, HubSpot Meetings, RevenueHero

## Sources the answers cite

18 of 72 answers came back with a source list, from 4 of 12 models. Sites named in the most answers:

- calendly.com: 7 answers, 11 citations
- youcanbook.me: 7 answers, 8 citations
- blog.hubspot.com: 6 answers, 20 citations
- albato.com: 5 answers, 5 citations
- cal.com: 4 answers, 5 citations
- guideflow.com: 4 answers, 5 citations
- marketbetter.ai: 4 answers, 4 citations
- cleverly.co: 3 answers, 3 citations

Pages named in the most answers:

- https://blog.hubspot.com/sales/b2b-meeting-scheduling-tools (6 answers)
- https://albato.com/blog/publications/best-appointment-scheduling-software-sales-pipeline (5 answers)
- https://blog.hubspot.com/sales/meeting-management-software-for-sales-teams-our-favorites-for-2026 (4 answers)
- https://marketbetter.ai/blog/best-meeting-scheduling-software-sales-teams-2026 (4 answers)
- https://blog.hubspot.com/sales/free-scheduling-software-sales-teams (3 answers)
- https://calendly.com/blog/meeting-scheduling-software (3 answers)
- https://cleverly.co/blog/appointment-scheduling-software (3 answers)
- https://doodle.com/en (3 answers)
- https://revenuehero.io/blog/best-meeting-scheduling-software (3 answers)
- https://salesquants.com/best-meeting-scheduling-tools (3 answers)

## Warned against

- Calendly: 8 of 60 labels negative. "Calendly (Medium-High Concern) ... Extensive data sharing ... Not HIPAA compliant" (Kimi K2, negative prompt)
- Doodle: 6 of 20 labels negative. "High Caution — Privacy & Security Concerns ... one of the most concerning tools from a privacy standpoint" (DeepSeek V4 Flash, negative prompt)
- Chili Piper: 7 of 34 labels negative. "Avoid These for Mid-Market - Chili Piper: Now starts at $15,000/year minimum ... overkill for most mid-sized companies" (Kimi K2, paraphrase prompt)
- Microsoft Bookings: 4 of 14 labels negative. "it has notable vulnerabilities: Input validation flaws ... allows HTML injection" (DeepSeek V4 Flash, negative prompt)

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, September 2026 Edition, gtm-ai-index.com.