The Pi Insider’s Guide
Everything we know about Pi in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Pi
The Insider’s Guide
Emotionally intelligent personal AI for talking things through
Every plan, grade, refund rule and rival among AI assistants, read from Pi’s own pages.
Made by Inflection AI · checked Oct 5, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Pi’s own pages, its app-store listings and our grades. Every fact in it is on Pi’s page too, where it is kept up to date. Checked Oct 5, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.8
GPA, above 30 of the 57 other AI assistants we grade
Pi is a personal AI from Inflection AI, built for supportive conversation rather than producing work documents. People use it to talk through decisions and difficult topics, learn about a subject, practice a language or brainstorm, by text or in a live voice mode. It is free on the web and in iOS and Android apps, and neither app store listing shows a paid plan.
To get you started, here are 8 things to know about Pi, taken from its own pages and our grades.
There's nothing to set up: open it and start typing, or talking.
- 1
Best for talking things through, by text or out loud
Pi is an assistant for talking things through, not for handing work to: thinking a decision over, rehearsing a hard conversation or practicing a language, by text or voice, free on the web, iPhone and Android.
- 2
It is free
Pi has no paid plan at all. The app is listed as free on the US App Store and on Google Play, and neither listing shows in-app purchases.
- 3
It runs on 3 platforms
Web, iOS and Android.
- 4
Supportive conversation
Designed for preparing a hard conversation, talking through a difficult topic or a decision, or venting when you want someone to listen.
- 5
Voice mode
Talk with Pi live by voice instead of typing your side of the conversation.
- 6
Learning and language practice
Explains a new topic in conversation and can act as a partner for practicing a language.
- 7
A 2.8 GPA, above 30 of 57
That is against the other AI assistants we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
Pi is free, so making your own would save you nothing.
Pi at a glance
- Pricing
- Free
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web, iOS, Android
- Made by
- Inflection AI, since 2023
- Category
- AI Assistants
- Our grade
- 2.8 GPA, good
- Store rating
- 4.4 on the App Store, 2,477 ratings
The report card
Best for talking things through, by text or out loud
Pi is an assistant for talking things through, not for handing work to: thinking a decision over, rehearsing a hard conversation or practicing a language, by text or voice, free on the web, iPhone and Android. Its listings mention no file reading, image making or coding, the App Store shows English only and an 18+ rating, and there's no desktop app or API.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | It costs nothing. Pi is listed as free on the App Store and Google Play, and neither listing shows a paid plan or in-app purchase, where the middle of this category wants about $12 a month. |
| Free plan and trial | A | Free outright, text chats and the live voice mode alike, on the web, iPhone, iPad and Android. There's no paid tier, so nothing is being held back for one. |
| Features | C | It does its one job fully — conversation, typed or spoken, for decisions, hard talks, learning a topic or practising a language — and that's a smaller job than this category's. The listings mention no file reading, no image making and no coding, and the App Store shows English as the only language. |
| Ease of use | C | 4.4 from about 2,500 App Store ratings, which is the ordinary middle of this category rather than the top. There's nothing to set up: open it and start typing, or talking. |
| Platforms and integrations | C | Web, iPhone, iPad and Android, and no more than that. No desktop app is listed, nothing it connects to, and no API. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Pi is for
- Fits if you want to talk a decision or a worry through before you act on it
- Works for people who'd rather speak than type, since there's a live voice mode
Who it is not for
- Skip it if you need files read, images made or code written, as its listings mention none of them
- Not for you if you want the app in your own language, because the App Store shows English only
- Not for you if you're choosing for a teenager, since the App Store rates it 18+
- Watch out: there's no desktop app, nothing it connects to and no API, so on a computer it's a browser tab
Good to know
Good for
- Talking through decisions, worries or difficult conversations
- People who would rather speak with an assistant than type
- Casual learning and language practice at no cost
Worth knowing
- The app listings describe conversation only, with no mention of file analysis, image generation or coding tools.
- The App Store listing shows English as the app's only language.
- The App Store gives the app an 18+ age rating.
- The listings cover iPhone, iPad and Android; no desktop app is listed, so on a computer Pi is used in a browser.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
Free
No paid plan at all
Pi is free to use.
Free outright, text chats and the live voice mode alike, on the web, iPhone, iPad and Android.
Free
$0
Text and voice conversations with Pi on the web, iPhone, iPad and Android.
The free plan
The app is listed as free on the US App Store and on Google Play, and neither listing shows in-app purchases.
Read from apps.apple.com on Oct 5, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
3
Places it runs: Web, iOS and Android
Emotionally intelligent personal AI for talking things through. Here is what it does, as its own site describes it, and what it covers: AI features, chat assistant, natural-language input.
The listings mention no file reading, no image making and no coding, and the App Store shows English as the only language.
- Supportive conversation
- Designed for preparing a hard conversation, talking through a difficult topic or a decision, or venting when you want someone to listen.
- Voice mode
- Talk with Pi live by voice instead of typing your side of the conversation.
- Learning and language practice
- Explains a new topic in conversation and can act as a partner for practicing a language.
- Planning and brainstorming
- Helps turn something new into an action plan, generates ideas and suggests things such as what to watch next.
- Adapts over time
- Inflection says Pi evolves and understands you better the more you talk with it.
Where it runs
- Web
- iOS
- Android
What it works with
Its own pages name no integrations.
Pi is made by Inflection AI, and has been around since 2023.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
30/57
Other AI assistants it is graded above
Pi's GPA of 2.8 is higher than 30 of the 57 other AI assistants we grade, and level with 8.
It stands best on free plan and trial (A, above 43 of 57) and worst on features (C, above 0).
Pi has no paid plan.
On features, ease of use and platforms it scores 2.0 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 58 AI assistants we grade, cut by the letter each got. Pi’s own letter is outlined.
- AValue for moneyAbove 38 of 57
- AFree plan and trialAbove 43 of 57
- CFeaturesAbove 0 of 57
- CEase of useAbove 3 of 57
- CPlatforms and integrationsAbove 2 of 57
Price against what you get
Each dot is one of 45 AI assistants. Further left costs less; higher up scores better on features, ease of use and platforms. Pi is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
Pi is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces.
What you could make
- Natural-language input: an app builder makes this well.
What you could not
- An AI model, which you can rent by the request but not make.
- A real app for iOS and Android. Something home-made would be a web page.
What this rests on. Pi’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
ChatGPT, Claude, Gemini, Meta AI and Microsoft Copilot
The 5 tools Pi is most often weighed against, with where each one differs from it.
- 3.4GPA
ChatGPT
Free plan · from $8/mo
OpenAI's general-purpose AI assistant for chat, images and voice.
- Only ChatGPT lists macOS, Windows and Linux apps.
- Pi also covers natural-language input.
- ChatGPT also covers AI search.
- 3.0GPA
Claude
Free plan · from $17/mo
Anthropic's AI assistant for writing, analysis and coding.
- Only Claude lists macOS, Windows and Linux apps.
- Only Claude lists a browser extension.
- Pi also covers natural-language input.
- 3.8GPA
Gemini
Free plan · from $4.99/mo
Google's AI assistant, tied into Gmail, Docs and other Google apps.
- Only Gemini lists macOS and Windows apps.
- Pi also covers natural-language input.
- Gemini also covers AI search.
- 2.8GPA
Meta AI
Free plan · from $7.99/mo
Meta's free AI assistant across its apps, the web and AI glasses.
- Pi also covers natural-language input.
- Meta AI also covers AI search and research.
- 3.0GPA
Microsoft Copilot
Free plan · from $9.99/mo
Microsoft's AI assistant for chat, images and Microsoft 365 apps.
- Only Microsoft Copilot lists Windows and macOS apps.
- Pi also covers natural-language input.
- Microsoft Copilot also covers AI search, AI agents and research.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Pi free?
Yes. Pi is free to use.
How much does Pi cost?
Pi lists one plan. Free: $0.
What platforms does Pi work on?
Pi is available on Web, iOS and Android.
How is Pi rated?
Pi's iPhone and iPad app averages 4.4 out of 5 from 2,477 ratings on the App Store in the United States, as read on Oct 5, 2026.
Does Pi have a Windows app?
No Windows app was listed when its pages were read on Oct 5, 2026. Pi is listed for Web, iOS and Android.
Does Pi have a macOS app?
No macOS app was listed when its pages were read on Oct 5, 2026. Pi is listed for Web, iOS and Android.
Is Pi open source?
Pi is not described as open source on its own site, as read on Oct 5, 2026.
Who makes Pi?
Pi is made by Inflection AI. It dates from 2023.
What are the alternatives to Pi?
The closest alternatives to Pi in our directory are ChatGPT, Claude, Gemini, Meta AI and Microsoft Copilot.
How does Pi compare with other AI assistants?
Pi's GPA of 2.8 is higher than 30 of the 57 other AI assistants we grade, and level with 8.
Is Pi good value for money?
ToolGPA grades Pi A for value for money. Pi has no paid plan.
Could I make my own version of Pi?
Pi is free, so making your own would save you nothing. And it is not the kind of software a weekend replaces.
Where this guide comes from
The prices, plans, platforms and features were read from Pi’s own pages on Oct 5, 2026, and the grades were given on Oct 10, 2026. Graded from this listing, whose facts were read from Pi's own pages on 5 October 2026, and its App Store rating. Also tested with a demo account on 2026-05-22.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Inflection AI. Prices change, so check pi.ai before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
3,189
Tools graded, in 94 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
3,189
tools graded
94
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Pi, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/pi
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Pi: The Insider's Guide", checked Oct 5, 2026. https://toolgpa.com/tools/pi
Know someone choosing between AI assistants?
Send them this guide: toolgpa.com/tools/pi/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded AI assistants after Pi, each with an Insider's Guide of its own.
- AI Assistants Insider's GuideEvery one of the 58 AI assistants we grade, compared
- Gemini Insider's GuideGoogle's AI assistant, tied into Gmail, Docs and other Google apps3.8 GPA
- Chatbox Insider's GuideAI chat client for your own API keys or a hosted model plan3.4 GPA
- ChatGPT Insider's GuideOpenAI's general-purpose AI assistant for chat, images and voice3.4 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Pi’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Pi is a trademark of its owner, and this guide is not made, paid for or approved by Inflection AI. Prices and plans change: check pi.ai before you buy.