Softwr

Software · head to head

Assistant.to vs HeyGen

Assistant.to logo

Assistant.to

Software

The easiest way to schedule meetings

From
Free
Rated
-
Full reviewWebsite
HeyGen logo

HeyGen

Software

AI video generation with realistic avatars

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Assistant.to no longer an independent product. assistant.to redirects to Cirrus Insight, which absorbed it; HeyGen avatar movements feel unnatural in longer videos and repetitive with limited emotional expression, appearing stiff and robotic after 60 seconds
  • They diverge on capability: Assistant.to covers In-email scheduling, HeyGen covers AI avatars.

Where they differ

Only the attributes on which Assistant.to and HeyGen actually diverge.

Attributes where Assistant.to and HeyGen differ
AttributeAssistant.toHeyGen
Pricing modelfreemiumUnknown
PlatformsChrome-extensionWeb
Founded20142020

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Assistant.to

  • In-email scheduling
  • One-click booking
  • Google Calendar sync
  • Time zone handling
  • Simple interface
  • Gmail
  • Google Calendar
  • Chrome-extension support

Only in HeyGen

  • AI avatars
  • Text-to-video
  • Voice cloning
  • Video translation
  • API access
  • Zapier
  • CRM integrations
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Assistant.to

  • Schedulingnot HeyGen
  • Appointment bookingnot HeyGen
  • Time trackingnot HeyGen
  • Resource managementnot HeyGen
  • Team coordinationnot HeyGen

HeyGen

  • ai tools managementnot Assistant.to
  • Workflow automationnot Assistant.to
  • Reportingnot Assistant.to

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Assistant.to

  • No longer an independent product. assistant.to redirects to Cirrus Insight, which absorbed it
  • Its scheduling now sits inside a wider Salesforce-focused sales tool rather than being a standalone add-in

HeyGen

  • Avatar movements feel unnatural in longer videos and repetitive with limited emotional expression, appearing stiff and robotic after 60 seconds
  • Cannot reliably choreograph natural interactions like walking through a room, using devices, or drinking from objects
  • Billing gap between marketed unlimited plans and actual credit consumption is highest complaint with lost credits on failed renders
  • Inconsistent lip sync and voice quality with slow processing and occasional moderation blocks without explanation
  • Customer support described as non-existent with no way to complain or reach a human representative

Pricing, plan by plan

Assistant.to

Free
  • FreeFree
    • In-email scheduling
    • Basic features
  • Pro$5/month
    • Team features
    • Custom branding
    • Priority support

HeyGen

Free
  • FreeFree
    • 3 videos
    • With watermark
  • Creator$29/month
    • Unlimited videos
    • 200 monthly credits
  • Pro$99/month
    • 2,000 credits
    • Advanced features

Which should you pick?

Choose Assistant.to if

  • You need in-email scheduling.
  • You want to start without paying.
  • You work on Chrome-extension.
  • You also want one-click booking.
Assistant.to review

Choose HeyGen if

  • You need ai avatars.
  • You want to start without paying.
  • You also want text-to-video.
HeyGen review

Questions people ask

Is Assistant.to or HeyGen better?
Neither clearly leads. Assistant.to starts at Free and HeyGen at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Assistant.to or HeyGen?
Assistant.to starts at Free and HeyGen at Free.
Does Assistant.to or HeyGen run on more platforms?
Assistant.to runs on Chrome-extension. HeyGen runs on Web.
Can I use Assistant.to for free?
Both have a free tier, so you can try either at no cost before committing.
What is Assistant.to best used for?
Assistant.to is most often used for scheduling, appointment booking, time tracking, resource management. Of those, scheduling and appointment booking are not what HeyGen is typically brought in for.
What can Assistant.to do that HeyGen cannot?
Assistant.to covers In-email scheduling, One-click booking, Google Calendar sync, Time zone handling. HeyGen covers AI avatars, Text-to-video, Voice cloning, Video translation.

Answered from the vendors’ own pages

HeyGen: What are HeyGen's pricing plans?

HeyGen offers Free ($0, 3 videos/month with watermark), Creator ($29/month, unlimited videos + 200 monthly credits), Pro ($99/month, more credits), Business ($149/month + $20/seat, 4K rendering), and custom Enterprise pricing.

Source
HeyGen: How does HeyGen's credit system work?

HeyGen uses a credit-based system where Avatar IV video costs 20 credits per minute, video translation costs 5-10 credits per minute. Creator includes 200 credits/month, Pro includes 2,000 credits/month, and Business shares 1,000 credits across the workspace.

Source
HeyGen: What is Digital Twin and how much does it cost?

Digital Twin creates a custom avatar from 2 minutes of recorded footage. Additional avatar slots beyond the default cost $29/month each.

Source
HeyGen: How many languages can HeyGen translate videos into?

HeyGen can translate videos into 175+ languages with AI lip sync, making it useful for global content distribution and localization.

Source
HeyGen: What do users say about HeyGen's ratings?

HeyGen has 4.8/5 on G2 across more than 1,000 reviews and 4.7/5 on Capterra across 313 verified reviews as of June 2026, with avatar quality scoring 9.2/10.

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