Pi
by Inflection AI
Personal AI assistant by Inflection AI focused on natural conversation, emotional intelligence, memory, voice interaction, and everyday support.
Pi is a personal AI assistant created by Inflection AI and designed around natural, human-centered conversations. It can help users think through ideas, talk through decisions, learn about topics, plan tasks, write and brainstorm, and have ongoing conversations through text or voice. Pi includes memory across chats, allowing it to remember selected long-term details and preferences, and it can use limited web search for supported questions. Inflection AI describes Pi as a personal intelligence partner powered by its foundation-model stack, with a focus on emotional intelligence, helpfulness, safety, and contextual conversations. Pi is available through the web and mobile applications.
Provider
Inflection AI
Category
AI Chat
Available On
Web, Android, iOS
Launched
May 2023
Use Cases
Personal Assistant, Conversation, Writing, Brainstorming
Best For
Personal conversations, brainstorming, learning, decision support, everyday assistance, and voice-based AI interaction
🧠 Models (3)
Inflection-3 Piv3.0
Conversational
Context Window
Not publicly specified
Input
text
Output
text
Inflection-3 Productivityv3.0
Instruction Following
Context Window
Not publicly specified
Input
text
Output
text
Pi 3.1 Previewv3.1-preview
Conversational Agent
Context Window
Not publicly specified
Input
text
Output
text
✨ Features (9)
Personal Intelligence
Designed as a personal AI partner for conversation, reflection, learning, and everyday assistance
Emotional Intelligence
Designed to communicate in a warm, conversational, and emotionally aware style
Pi Memory
Can remember selected long-term details, preferences, interests, goals, and other information across chats
Voice Conversations
Supports talking with Pi using voice input and listening to Pi's spoken responses
Web Search
Can use limited web search and display search results for supported questions
Personalized Conversations
Adapts conversations using remembered preferences and contextual information
Smart Support
Pi can provide conversational help and guide users toward support resources when needed
Multilingual Support
Supports conversations and translation across multiple languages
Chat History
Allows users to continue and manage previous conversations
💰 Pricing
✓ Free Plan
✕ Free Trial
✕ Paid Plan
✕ Enterprise
Starting Price
Free
Billed free
API Pricing
Inflection API pricing is available separately for developers; consumer Pi access is free.
More Info
View pricing page ↗💬 Prompt Library (5)
Talk Through a Problem
GeneralUse Pi as a conversational thinking partner
I want to think through a problem I'm dealing with. Ask me a few useful questions, help me understand the situation from different perspectives, and then help me identify practical next steps.
Learn Something
GeneralLearn a new topic through an interactive conversation
Teach me about [TOPIC] in a simple and engaging way. Start with the basics, give practical examples, and then explain the more advanced concepts. Ask me a few questions along the way to check my understanding.
Brainstorm Ideas
GeneralGenerate and develop ideas through conversation
Help me brainstorm ideas for [PROJECT OR GOAL]. Give me several different approaches, explain the strengths and weaknesses of each, and then help me develop the most practical ideas further.
Write Better
WritingImprove writing while preserving the original meaning
Help me improve the following text. Make it clearer, more natural, and engaging while keeping my original meaning and tone. [PASTE TEXT HERE]
Prepare for Conversation
GeneralPrepare for an important or difficult conversation
I need to have a difficult conversation about [TOPIC]. Help me prepare what to say, anticipate possible responses, and create a respectful way to communicate my point clearly.
🔗 Integrations (5)
Pi Web
web
Use Pi directly through its web application
iOS App
mobile
Pi mobile application for iPhone and iPad
Android App
mobile
Pi mobile application for Android devices
Inflection API
api
Developer platform for accessing Inflection AI models through an API
Inflection Playground
developer
Developer environment for testing Inflection models and API workflows
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HuggingChat
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Replika
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Character.AI
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⚠️ Limitations
- •Pi can still make mistakes and provide incorrect information
- •Pi does not currently support generating, uploading, or editing images
- •Web search functionality is limited and may not be available for every request
- •Pi's available model cannot currently be manually selected or switched in the consumer app
- •Some advanced API models and developer capabilities are separate from the consumer Pi experience
- •Some conversations or requests may be restricted by Pi's safety policies
- •Accessibility features such as built-in screen-reader support and high-contrast mode are currently limited
📚 Sources
- https://inflection.ai/(official)
- https://pi.ai/onboarding(official)
- https://help.pi.ai/en/articles/15425697-pi-s-memory(official)
- https://help.pi.ai/en/articles/13171336-how-do-i-use-voice-to-talk-with-pi(official)
- https://help.pi.ai/en/articles/13171475-how-do-i-generate-or-upload-images-and-fix-common-errors(official)
- https://developers.inflection.ai/docs/workspaces(official)
- https://inflection.ai/privacy-policy(official)