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AI · head to head

Pi vs Synthesia

Pi logo

Pi

AI

Personal AI by Inflection

From
Free
Rated
-
Full reviewWebsite
Synthesia logo

Synthesia

Video Production

AI video creation with digital presenters

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Pi inflection AI's own homepage (2024 archive) pivoted its headline positioning to enterprise AI licensing rather than the consumer Pi assistant, with no consumer pricing or plans published on the corporate site; Synthesia free plan limited to 10 minutes of video per month
  • They diverge on capability: Pi covers Conversational AI, Synthesia covers AI avatars.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Pi and Synthesia actually diverge.

Attributes where Pi and Synthesia differ
AttributePiSynthesia
Pricing modelfreefreemium
PlatformsWeb, Ios, AndroidWeb
CategoryAIVideo Production
Founded20222017

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

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 Pi

  • Conversational AI
  • Voice mode
  • Empathetic responses
  • Multi-platform
  • Mobile apps
  • Web interface
  • Ios support
  • Android support

Only in Synthesia

  • AI avatars
  • 140+ languages
  • Video templates
  • Brand customization
  • API access
  • LMS integrations
  • PowerPoint
  • Api support

Both cover

  • Web support

What people use each for

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

Pi

  • ai tools managementnot Synthesia
  • Workflow automationnot Synthesia
  • Reportingnot Synthesia

Synthesia

  • Training video creation with AI avatarsnot Pi
  • Multilingual video localisation with AI dubbingnot Pi
  • Enterprise video production and managementnot Pi

Where each one falls short

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

Pi

  • Inflection AI's own homepage (2024 archive) pivoted its headline positioning to enterprise AI licensing rather than the consumer Pi assistant, with no consumer pricing or plans published on the corporate site
  • Requires iOS 16 or later, per the App Store listing

Synthesia

  • Free plan limited to 10 minutes of video per month
  • Starter plan limited to 10 minutes of video per month
  • Creator plan capped at 30 minutes of video per month
  • SSO/SAML authentication restricted to Enterprise tier

Pricing, plan by plan

Pi

Free
  • FreeFree
    • Unlimited conversations
    • Voice mode
    • All platforms

Synthesia

Free
  • BasicFree
    • 1,200 credits per month
    • Up to 10 minutes of video per month
    • 9 AI avatars
  • Starter$29/month
    • 14,500 credits per year
    • Up to 120 minutes of video per year
    • 125+ AI avatars
  • Creator$89/month
    • 44,000 credits per year
    • Up to 360 minutes of video per year
    • 180+ AI avatars

Which should you pick?

Choose Pi if

  • You need conversational ai.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want voice mode.
Pi review

Choose Synthesia if

  • You need ai avatars.
  • You want to start without paying.
  • You also want 140+ languages.
Synthesia review

Questions people ask

Is Pi or Synthesia better?
Neither clearly leads. Pi starts at Free and Synthesia at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Pi or Synthesia?
Pi starts at Free and Synthesia at Free.
Does Pi or Synthesia run on more platforms?
Pi runs on Web, Ios, Android. Synthesia runs on Web.
Can I use Pi for free?
Both have a free tier, so you can try either at no cost before committing.
What is Pi best used for?
Pi is most often used for ai tools management, workflow automation, reporting. Of those, ai tools management and workflow automation are not what Synthesia is typically brought in for.
What can Pi do that Synthesia cannot?
Pi covers Conversational AI, Voice mode, Empathetic responses, Multi-platform. Synthesia covers AI avatars, 140+ languages, Video templates, Brand customization. Both handle Web support.

Answered from the vendors’ own pages

Synthesia: How much does Synthesia cost?

Synthesia offers a free Basic plan with 10 minutes of video per month, Starter at $29 per month with 120 minutes per year, and Creator at $89 per month with 360 minutes per year. Annual billing provides 38% savings. Enterprise plans are available with custom pricing.

Source
Synthesia: What is included in Synthesia's free plan?

The free Basic plan includes 1,200 credits per month (approximately 10 minutes of video), 9 AI avatars, 3 personal avatars, and access to 160+ languages and voices. No credit card is required.

Source
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