Skip to content
SlateIndex
Cal.comThe better way to schedule your meetings
vs
InstantlyTurn leads into clients with automated outreach, a B2B lead database, email deliverability tools, and an AI-powered CRM.
Comparison · Sales Engagement · weekly run Nov 3

Cal.com vs Instantly

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Instantly is the stronger AI pick in Sales Engagement: it has a visibility score of 10.1 versus 6.8 for Cal.com, and ranks ahead in 100% of the answers that name both.

Choose Cal.com if…

  • You want a free plan to start
  • You need more native integrations (100+ vs 50+)
  • You need ISO 27001 or SOC 2 Type II or HIPAA or GDPR or CCPA coverage
  • Per seat pricing suits your budget better than flat tiers

Choose Instantly if…

  • You want the brand AI engines rank higher (10.1 vs 6.8)
  • You prefer a larger, established vendor (51–200 employees)
  • Flat tiers pricing suits your budget better than per seat
  • Cost-effective platform for cold email outreach

AI visibility side by side

Latest weekly run · Nov 3

Metric Cal.com Instantly
Visibility score6.8%10.1%
Change vs last weekNewup+0.1%
Rank in Sales Engagement#16#9
Share of voice2.3%3%
Mentions this run1719
Positive in AI answers—28%

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

0%25%50%75%100%Nov 2Nov 3Cal.com 7%

Cal.com +6.8pp · Instantly +0.09999999999999964pp over 1 weekly runs.

Engine by engine

Instantly leads on 2 of 3 engines

ChatGPT
0%
10.2%
AI Mode
1.7%
9.4%
Perplexity
18.7%
10.7%
Cal.comInstantly

Head to head in AI answers

5 engine answers name both brands

0Cal.com ranked higher
5Instantly ranked higher

Features, pricing & fit

DimensionCal.comInstantly
Pricing modelPer seatFlat tiers
Entry priceFree; paid from $12 per seat / mo$47 / mo
Free planYesNo
DeploymentHosted cloud service, with a self-hosting option and US or EU data hosting on enterprise plansWeb-based
Integrations100+50+
ComplianceISO 27001, SOC 2 Type II, HIPAA, GDPR, CCPA—
SupportHelp docs at cal.com/help, Email support@cal.com, Priority Slack and account support on Enterprise planChat support, Premium live support, Dedicated account manager and shared Slack channel on Enterprise plans
Founded20212021
HeadquartersSan Francisco, California, United StatesSheridan, Wyoming, United States
Employees11–5051–200
FundingEarly Stage VC · $32M raisedBootstrapped
Best forIndividuals, sales and success teams, healthcare providers and product teams that need booking pages or scheduling embedded in their own productsSmall teams, agencies and freelancers running cold email outbound at scale.

Plans side by side

Cal.com

Individuals$0free forever
Teams$12per user/month
Organizations$28per user/month
EnterpriseCustomcustom pricing
Cal.com pricing

Instantly

Outreach Growth$47month
Outreach Hypergrowth$107month
Outreach Light Speed$358month
Outreach EnterpriseCustomcustom
Credits Growth$47month
Credits Supersonic$97month
Hyper Credits$197month (from)
Credits EnterpriseCustomcustom
Starter Bundle$94month
Scale Bundle$194month
Agency Bundle$555month
VIPCustomcustom
Instantly pricing

Pros and cons

Themes from the AI answers that mention each brand

Cal.com

Profile in progress.

Instantly

  • Cost-effective platform for cold email outreach
  • Strong for high-volume cold email outbound and lead generation
  • Deliverability, warm-up and sending infrastructure
  • Good for agencies managing many sending accounts
  • Highest G2 rating among sales engagement platforms
  • Narrow focus on cold email rather than an all-in-one platform
  • Not a complete CRM or full sales engagement suite

Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run

Cite as: SlateIndex, “Cal.com vs Instantly”, https://slateindex.ai/compare/cal-com-vs-instantly, data of Nov 3, 2026. Licence: CC BY 4.0.