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HeyGen vs Undermind

Features, pricing, ratings, and pros and cons, side by side.

Undermind logo

Undermind

AI research assistant that searches, reads and cites scientific papers for literature reviews

Freemium
Visit websiteView details

Verdict

HeyGen is listed under Video AI and Undermind under AI Assistants. HeyGen scores higher in FinderAtlas's editorial review (8.3 vs 7.7 out of 10), led by ease of use. Both have a free plan or trial. Only HeyGen is available on iOS, Android and CLI and offers an API.

Best overall

HeyGen

  • Marketing teams
  • Corporate training and L&D teams
  • Sales teams
  • Content creators

Choose HeyGen if

  • You want a tool built for Avatar-presented training and explainer videos.
  • Free plan with no time limit, though capped at 3 videos a month.
  • Video Translation with voice preservation and lip-sync in 175+ languages.

Choose Undermind if

  • You want a tool built for deep literature reviews, finding hard-to-surface papers on a niche topic, and tracking new publications in a field.
  • Built specifically for scientific literature, with citation-following and full-text reading.
  • In-line citations let users trace claims to source papers.
Best for beginners
HeyGen
Best for business
HeyGen

Features

18 features compared.

  • AI Studio
    HeyGen
    Available
    Undermind
    Not available
  • Avatars
    HeyGen
    Available
    Undermind
    Not available
  • Video Translation
    HeyGen
    Available
    Undermind
    Not available
  • Video Agent
    HeyGen
    Available
    Undermind
    Not available
  • Multiple input types
    HeyGen
    Available
    Undermind
    Not available
  • Voice cloning
    HeyGen
    Available
    Undermind
    Not available
  • Interactive video and SCORM export
    HeyGen
    Available
    Undermind
    Not available
  • Developer API
    HeyGen
    Available
    Undermind
    Not available
  • Identity verification and moderation
    HeyGen
    Available
    Undermind
    Not available
  • Conversational Deep Search
    HeyGen
    Not available
    Undermind
    Available
  • Citation Trail Following
    HeyGen
    Not available
    Undermind
    Available
  • Cited Reports
    HeyGen
    Not available
    Undermind
    Available
  • Full-Text Analysis
    HeyGen
    Not available
    Undermind
    Available
  • Custom Tables
    HeyGen
    Not available
    Undermind
    Available
  • Relevance Sorting and Filtering
    HeyGen
    Not available
    Undermind
    Available
  • New Paper Alerts
    HeyGen
    Not available
    Undermind
    Available
  • Workspaces and Libraries
    HeyGen
    Not available
    Undermind
    Available
  • Agent Connections
    HeyGen
    Not available
    Undermind
    Available

Pricing

Plans as listed by each vendor. Check their sites for current prices.

  • Pricing model
    HeyGen
    Freemium
    Undermind
    Freemium
  • Free plan
    HeyGen
    Yes
    Undermind
    Yes
  • Starting price
    HeyGen
    $0
    Undermind
    $0
  • Plans
    HeyGen
    5 plans
    Undermind
    4 plans

HeyGen plans

  • Free

    $0

    3 videos per month, up to 1 minute each

    • 1 custom avatar
    • 500+ stock avatars
    • 30+ languages
    • Up to 3 Photo Avatars
    • 1 voice clone
    • Standard processing

  • Creator

    Most popular

    $29/month

    600 credits per month, videos up to 30 minutes

    • Watermark removal
    • Unlimited Photo Avatars
    • Voice cloning
    • 175+ languages and dialects
    • Credit rollover
    • 700+ stock avatars
    • Fast processing

  • Pro

    $49/month

    From 1,000 credits per month, videos up to 30 minutes

    • Everything in Creator
    • 4K export
    • Faster processing
    • Customizable monthly usage
    • All advanced AI models
    • Editing of translated scripts

  • Business

    $149/month

    1,500 credits per month plus $20 per extra seat, videos up to 60 minutes

    • Team seats
    • Workspace collaboration
    • SAML/SSO
    • Centralized billing
    • 5+ custom avatars
    • Interactive video
    • SCORM export
    • LMS integrations
    • Credit packs or auto-reload

  • Enterprise

    Custom/custom

    Contact sales

    • No maximum video length
    • SCIM provisioning
    • MFA
    • Invoice billing
    • Priority support
    • Dedicated customer success manager
    • Custom onboarding

Undermind plans

  • Free

    $0

    Exploratory research with standard usage limits

    • Chat
    • deep searches and reports
    • shared workspaces
    • connect external agents
    • standard usage limits

  • Pro

    Most popular

    $16/month

    Ongoing, serious research

    • Everything in Free
    • newest AI models
    • deeper full-text analysis
    • 10x higher usage limits than Free
    • unlimited workspaces
    • files and paper libraries

  • Team

    $15/user/mo

    Research groups that need shared administration

    • Everything in Pro
    • team member management
    • priority support
    • centralized billing

  • Enterprise

    Custom/custom

    Organizations with security and compliance needs

    • Everything in Team
    • increased compute
    • organization-wide login
    • onboarding seminars
    • admin dashboard
    • custom terms
    • SLA and security review
    • dedicated support

Our ratings

Scored out of 10 by the Finder Atlas editorial team. Last reviewed October 2026.

HeyGen
8.3overall
Undermind
7.7overall

HeyGen leads in 1 category and Undermind in 1.

  • Avatar Realism & Lip Sync

    HeyGen
    9.0
    Undermind
    Not rated

  • Video Translation

    HeyGen
    9.0
    Undermind
    Not rated

  • Ease of Use

    HeyGen leads by 0.5
    HeyGen
    8.5
    Undermind
    8.0

  • Value for Money

    Undermind leads by 0.8
    HeyGen
    7.0
    Undermind
    7.8

  • Developer & Team Features

    HeyGen
    8.0
    Undermind
    Not rated

  • Feature Depth

    HeyGen
    Not rated
    Undermind
    8.2

  • Performance & Speed

    HeyGen
    Not rated
    Undermind
    7.5

  • Documentation & Support

    HeyGen
    Not rated
    Undermind
    7.0

Scores weigh documented features, plan value, platform coverage, integrations and user feedback. A missing score means we have not rated that area yet.

Pros and cons

HeyGen

Pros

  • Free plan with no time limit, though capped at 3 videos a month
  • Video Translation with voice preservation and lip-sync in 175+ languages
  • Text-based editor with Brand Kit, captions and multi-user editing
  • Custom avatars and voice cloning on every plan, including Free
  • Public API with CLI and MCP server, and iOS and Android apps
  • Business plan adds SAML/SSO, SCORM export and LMS integrations

Cons

  • Free plan limits videos to 1 minute and 3 per month
  • 4K export and advanced AI models need Pro at $49 per month or higher
  • Credit-based pricing makes the cost of a video depend on model, length and complexity
  • Business starts at $149 per month plus $20 for each extra seat
  • Android app is stated as available in the U.S. only

Undermind

Pros

  • Built specifically for scientific literature, with citation-following and full-text reading.
  • In-line citations let users trace claims to source papers.
  • Free tier available, with paid Pro at $16 per month billed annually.
  • Alerts and libraries support ongoing tracking of a field, not just one-off searches.
  • Can be connected to Claude, ChatGPT and other agents.

Cons

  • Exact usage limits are not published; Pro is only described as 10x Free.
  • Not designed for general web research, news or non-technical topics.
  • Web-only; no iOS or Android app was found.
  • Published benchmark results are vendor-reported.

Platforms

  • Web
    HeyGen
    Supported
    Undermind
    Supported
  • Windows
    HeyGen
    Not supported
    Undermind
    Not supported
  • macOS
    HeyGen
    Not supported
    Undermind
    Not supported
  • iOS
    HeyGen
    Supported
    Undermind
    Not supported
  • Android
    HeyGen
    Supported
    Undermind
    Not supported
  • API
    HeyGen
    Supported
    Undermind
    Not supported
  • Browser Extension
    HeyGen
    Not supported
    Undermind
    Not supported
  • CLI
    HeyGen
    Supported
    Undermind
    Not supported

Integrations

HeyGen

5 integrations
  • ChatGPT
  • Zapier
  • Make
  • n8n
  • HubSpot

Undermind

2 integrations
  • Claude
  • ChatGPT

Company

  • Company
    HeyGen
    HeyGen
    Undermind
    Undermind
  • Founded
    HeyGen
    2020
    Undermind
    Not listed
  • Headquarters
    HeyGen
    Los Angeles, CA
    Undermind
    Not listed
  • Monthly users
    HeyGen
    30M+
    Undermind
    Not listed
  • Listing
    HeyGen
    Claimed
    Undermind
    Claimed

Frequently asked questions

Is HeyGen better than Undermind?

It depends on your workflow. HeyGen is built for Avatar-presented training and explainer videos. Undermind is built for deep literature reviews, finding hard-to-surface papers on a niche topic, and tracking new publications in a field.

What are the key feature differences between HeyGen and Undermind?

HeyGen: Create avatar videos from text and translate them into 175+ languages. Undermind: AI research assistant that searches, reads and cites scientific papers for literature reviews. HeyGen is rated 4.0/5 from 1 user review.

Does HeyGen or Undermind have a free plan?

Yes, both do. HeyGen is freemium and Undermind is freemium, and each has a free plan or trial.

Which is cheaper, HeyGen or Undermind?

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.