Neither clearly leads. Pi starts at Free and Rev at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Pi or Rev?

Pi starts at Free and Rev at Free.

Does Pi or Rev run on more platforms?

Pi runs on Web, Ios, Android. Rev runs on Web, iOS, Android, API.

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 Rev is typically brought in for.

What can Pi do that Rev cannot?

Pi covers Conversational AI, Voice mode, Empathetic responses, Multi-platform. Rev covers Human transcription, AI transcription, Captions and subtitles, Legal transcripts.

AI · head to head

Pi vs Rev

Pi

Personal AI by Inflection

From: Free
Rated: -

Full review Website

Rev

Human and AI transcription, captions and subtitles priced per minute

From: Free
Rated: -

Full review Website

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; Rev human transcription at 1.99 US dollars a minute means roughly 120 dollars an hour of audio, so a long-form interview series costs more in transcription than most teams assume before they run the arithmetic.
They diverge on capability: Pi covers Conversational AI, Rev covers Human transcription.
Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Pi and Rev actually diverge.

Attributes where Pi and Rev differ
Attribute	Pi	Rev
Pricing model	free	Per minute for human work, per seat per month for AI
Platforms	Web, Ios, Android	Web, iOS, Android, API
Founded	2022	Unknown

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

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
Web support
Ios support

Only in Rev

Human transcription
AI transcription
Captions and subtitles
Legal transcripts
File analysis
Clio integration
Rev API
Speaker identification

What people use each for

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

Pi

ai tools managementnot Rev
Workflow automationnot Rev
Reportingnot Rev

Rev

A law firm that needs a deposition transcript in a court-acceptable page format with a fixed turnaround and a published per-page price it can bill to a matter.not Pi
A documentary or podcast producer costing a project in advance, because human transcription at a published per-minute rate makes the transcription line item a known number.not Pi
A broadcaster needing compliant human captions rather than machine captions, where accuracy is a regulatory requirement and not a convenience.not Pi
A team with high AI volume and occasional high-stakes files, using the subscription for the bulk and paying the discounted human rate only where accuracy matters.not 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

Rev

Human transcription at 1.99 US dollars a minute means roughly 120 dollars an hour of audio, so a long-form interview series costs more in transcription than most teams assume before they run the arithmetic.
AI minutes are allocated per seat per month and do not roll over, so bursty workloads, which is how most media production actually behaves, waste allowance in quiet months and run out in busy ones.
The product direction has moved towards legal and investigative use, so a newsroom or media buyer is choosing a tool whose roadmap priority sits elsewhere.
Foreign-language subtitles are priced from 6.49 to 15.99 US dollars per minute, an order of magnitude above transcription, which makes multi-language localisation of any volume of video expensive enough to change the plan.
Human turnaround is stated in hours rather than guaranteed contractually on the published plans, so a hard broadcast or filing deadline needs an agreement beyond the standard terms.

Pricing, plan by plan

Pi

Free

FreeFree
- Unlimited conversations
- Voice mode
- All platforms

Rev

Free

FreeFree
- 45 AI transcription and caption minutes per month
- Up to 5 files analysed
- No human transcription included
Essentials$25.49/month
- 5,000 AI minutes per seat per month
- Up to 3 seats
- 10 per cent discount on human transcription, captions and subtitles
Pro$47.99/month
- 10,000 AI minutes per seat per month
- Up to 5 seats
- 15 per cent discount on human work
Unlimited$undefined/month
- Unlimited AI minutes
- Up to 500 files analysed at once
- Dedicated account specialist

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 Rev if

You need human transcription.
You want to start without paying.
You work on Web, iOS, Android, API.
You also want ai transcription.

Rev review

Questions people ask

Is Pi or Rev better?: Neither clearly leads. Pi starts at Free and Rev at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Pi or Rev?: Pi starts at Free and Rev at Free.
Does Pi or Rev run on more platforms?: Pi runs on Web, Ios, Android. Rev runs on Web, iOS, Android, API.
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 Rev is typically brought in for.
What can Pi do that Rev cannot?: Pi covers Conversational AI, Voice mode, Empathetic responses, Multi-platform. Rev covers Human transcription, AI transcription, Captions and subtitles, Legal transcripts.

Answered from the vendors’ own pages

Rev: How much is human transcription?

1.99 US dollars per minute with a stated accuracy target above 99 per cent, typically returned within 12 hours. Subscribers get 10 to 15 per cent off.

Rev: Is there a free tier?

Yes, 45 AI minutes per month and up to 5 files analysed, with no human transcription included.

Rev: Do unused AI minutes roll over?

No. The allowance is per seat per month and resets, which penalises irregular workloads.

Rev: Can it do subtitles in other languages?

Yes, across seventeen languages, priced from 6.49 to 15.99 US dollars per minute, considerably more than transcription.

Rev: Is Rev still a good choice for newsrooms?

It works, but the subscription tiers are now positioned around legal and investigative workflows, so a newsroom should compare it against a tool built specifically for journalism.