Pi by Inflection
Emotionally intelligent personal AI assistant on web, mobile, SMS, WhatsApp and Messenger focused on supportive conversation.
Delv Safety Grade: C
Score 58/100 · assessed 2026-04-18
Pi is a consumer-facing conversational AI from Inflection AI, a well-funded startup founded by LinkedIn co-founder Reid Hoffman and DeepMind veterans. The service operates as a closed-source proprietary assistant accessible via web, mobile apps, and messaging platforms. Whilst Inflection has legitimate backing and professional infrastructure, Pi's closed nature means users cannot audit its data handling, model behaviour, or security practices. The multi-platform reach (SMS, WhatsApp, Messenger) creates broad data exposure across third-party channels. Inflection was acquired by Microsoft in 2024, with key staff moving to Microsoft AI; the product's long-term roadmap remains unclear. No major security incidents are publicly documented, but the lack of transparency around data retention, training practices, and model safety controls is a material concern for privacy-conscious users. Suitable for casual conversation but not for sensitive or business-critical interactions.
Green flags
- Backed by reputable founders (Reid Hoffman, DeepMind alumni)
- Professional infrastructure from well-funded startup
- No known major security incidents or data breaches
- Free tier available for consumer access
Red flags
- Closed-source proprietary model with no code transparency
- Multi-platform messaging integration expands data exposure surface
- Unclear data retention and training policies post-Microsoft acquisition
- No public security audits or third-party verification available
Permissions requested
Pricing
Platforms
Review
Best for people who want a thinking partner, not a task executor. Free tier is generous. Skip it if you need an agent that integrates with your workflow or takes action autonomously.
Good at
- Emotionally intelligent responses that feel genuinely supportive
- Remembers context across sessions without manual prompting
- Available on web, mobile, SMS, WhatsApp, and Messenger
- Free tier with no obvious paywalls or usage caps
- Asks clarifying questions instead of rushing to answers
Watch out
- Not autonomous in the operational sense—won't execute tasks or integrate with tools
- Conflict-averse, often validates before challenging your thinking
- Weak on technical or research-heavy topics
- No export or integration features for workflows
- Conversational pace is slower than productivity-focused AI tools
Use cases
- emotional support
- planning help
- learning companion