Koalendar vs Cal.com
Zero of fourteen models named Koalendar first on the direct prompt; zero named Cal.com. Koalendar was named by eleven of the fourteen models and Cal.com by nine and Koalendar carries 19 labels and Cal.com 23, so the shares are not directly comparable.
Named in one category this edition.
Named in three categories this edition.
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the interview scheduling page.
By framing
KoalendarFirst choices, of fourteen modelsCal.com
Across every category in the November 2026 Edition, Koalendar and Cal.com were named in the same answer thirty times, of the 48 answers naming Koalendar and the 95 naming Cal.com. In those answers Cal.com took the first choice ten times and Koalendar seven.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | |||||
| GPT-5.4 mini | ||||||
| Gemini 3.5 Flash | | |||||
| Perplexity Sonar | | | | | ||
| Grok 4.20 | | | | | ||
| Mistral Small | | | ||||
| DeepSeek V4 Flash | | | ||||
| Llama 4 Maverick | ||||||
| Qwen 3.7 Flash | | | | |||
| Kimi K2 | | | ||||
| GLM 4.7 FlashX | | |||||
| MiniMax M2.5 | | | | | ||
| GPT-6 Luna | ||||||
| Muse Glimmer 30B | | | |
Koalendar Cal.com first choice named as an alternative argued againstblank: not namedEach cell is one answer, Koalendar on the left and Cal.com on the right.The direct prompt
Neither was the first choice, one was named
2 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
12 of 14 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Koalendar15%#2 of 16Cal.com11%#3 of 16Cal.com2%#7 of 13Koalendar0%#– of 13What the models said about Koalendar
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Five of six in this category shown.
“Lack enterprise features like audit trails, SSO, or robust integrations—avoid for scaled hiring due to reliability gaps.” Grok 4.20 · negative prompt · hard negative
“General-purpose schedulers such as Calendly, Cal.com, Koalendar, or YouCanBookMe: ... verify panel coordination” Perplexity Sonar · negative prompt · soft negative
“Koalendar is widely considered the best option for strict budget constraints because it offers a completely free plan with no time limits.” GLM 4.7 FlashX · budget prompt · first choice
“Often cited as the best genuinely free scheduler... Zero Budget: Use Koalendar” Qwen 3.7 Flash · budget prompt · first choice
“For most companies with a limited budget, I'd start with Koalendar.” DeepSeek V4 Flash · budget prompt · first choice
What the models said about Cal.com
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“General-purpose schedulers such as Calendly, Cal.com, Koalendar, or YouCanBookMe: ... verify panel coordination, candidate routing, ATS write-back” Perplexity Sonar · negative prompt · soft negative
“Cal.com - Recent Concerns ... Production code went private; public repo became "Cal.diy"” MiniMax M2.5 · negative prompt · soft negative
“less proven for pure recruiting at mid-market scale” Grok 4.20 · direct prompt · soft negative
“Cal.com is positioned as the best overall interview scheduling software for flexibility, customization, routing, and transparent pricing.” Muse Glimmer 30B · paraphrase prompt · first choice
“Cal.com – best overall free & open source ... 1 user, zero budget, want unlimited event types: Cal.com free.” Muse Glimmer 30B · budget prompt · first choice
“For most teams, start with Cal.com (balanced and flexible) or Calendly (if simplicity is key).” Grok 4.20 · comparative prompt · first choice
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.