ChatGPT
Chat assistants
General AI chat assistant from OpenAI with Free, Go, Plus and Pro plans.
Conversational personal AI from Inflection AI, focused on supportive dialogue.
Quick answer
Pi is a personal AI from Inflection AI built for conversation, advice and companionship rather than productivity tooling. It can be used without logging in and signing up is free; keeping chat history past 60 days requires an account. No paid plan or public API was found on the official pages checked.
Prices as listed on the official pricing page. Taxes and local currency can change the final amount.
Plan, Price, Billing, Checked
| Plan | Price | Billing | Checked |
|---|---|---|---|
| Free | Free | per month | October 25, 2026 |
Official sourceChecked October 25, 2026
Pi has a free plan.
Official sourceChecked October 25, 2026
No language information found on official pages.
Official sourceChecked October 25, 2026
Scores and examples come only from tests we ran ourselves. Payment never changes a score.
Not tested yet
We have not run our own tests on Pi. Until then this profile stays out of search results.
Official sourceChecked October 25, 2026
Official sourceChecked October 25, 2026
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Meta's assistant on the web, in its own app, and inside WhatsApp, Instagram, Messenger and Facebook.
Pi has a free plan. "Log in to save your chat history past 60 days."
The official site does not publish a fixed price for a paid plan. Check the official pricing page for the current offer.
Not confirmed. No language information found on official pages.
No. Newly Stack is an independent directory. Use the official link on this page to sign up or buy.