Pricing
Pi Pricing 2026
Inflection AI · Pi 3
Pi is free. API access starts at $2.50 per 1M input tokens. Conversational and EQ-focused. Best voice mode in 2024–2025 (six warm voices). Limited capability vs frontier models. Now part of Microsoft after Inflection acqui-hire.
Free tier
$0
- Fully free, no paid tier
- Free-tier score: 5/5
Free
Free
- Full access to Pi 3
- Context window: 32K tokens
- Voice mode
API only
API only
- Higher rate limits
- Priority access
API pricing
$2.50per 1M input tokens
$10.00per 1M output tokens
~$4.50est. per 1M in + 200K out
Context window
32K
Knowledge cutoff
2025-08
Intelligence Index
74.9
Free tier
5/5
Open weights
No
Cheaper alternatives to Pi
FAQ
How much does Pi cost?
Pi is free. API: $2.50 per 1M input tokens, $10.00 per 1M output tokens.
Is Pi free?
Fully free, no paid tier. Pi has one of the most generous free tiers among consumer AI models.
What's a cheaper alternative to Pi?
The cheapest alternatives are Character.AI ($9.99/mo), Le Chat ($14.99/mo), and ChatGPT ($20/mo). Or skip the choice entirely — Perspective AI bundles Pi and 13 other AI models for $14.99/month.
Or skip the choice
Get Pi plus 13 other AI models — $14.99/month.
Use Pi alongside Claude, Gemini, Grok, Copilot, and more in one app. Switch mid-conversation. No per-vendor logins, no separate bills.