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Pi Inflection
by Inflection AI
System Card
OrganizationInflection AI
Released2023-05
Architectureepisodic-buffer / Empathy-Optimized Conversational AI
DetailsPi (Personal Intelligence) launched May 2023, built on Inflection's proprietary Inflection-1/2 LLMs with a Recursive Sentiment Loop that evaluates draft responses against empathy markers before final output. Within a session Pi maintains coherent long-term context; logged-in users can access chat history across sessions though cross-session deep memory recall is limited. Inflection's co-founders (Mustafa Suleyman, Reid Hoffman, Karén Simonyan) later joined Microsoft; the Pi product continues independently.
Parameters—
Domainpersonalizationepisodic-session
Open SourceNo
WebsiteVisit
companionempathyconversationalemotional-supportinflectionfree
Capability Profile
Benchmark Scores
5 of 14 benchmarksLong-Context Retrieval0/5
RULER
no dataNIAH
no dataLooGLE
no dataLongBench
no data∞Bench
no dataMulti-Turn Recall2/2
Cross-Session Memory1/1
Multi-Hop QA0/3
BABILong
no dataMultiHop-RAG
no dataHotpotQA
no dataAgent Task Memory1/1
Personalization1/1
Factuality / Grounding0/1
RAGAS
no dataSources:Pi Inflection vendor documentation; evaluated on LoCoMo: Long-Term Conversational Memory Benchmark (Snap Research, 2402)Pi Inflection vendor documentation; evaluated on LongMemEval: Benchmarking Chat Assistants on Long-Term Interactive Memory (Salesforce AI Research, 2410)Pi Inflection vendor documentation; evaluated on MemoryBank: Enhancing LLMs with Long-Term Memory (Sun Yat-sen University, 2305)Pi Inflection vendor documentation; evaluated on AgentBench Memory Track (Tsinghua KEG, 2308)Pi Inflection vendor documentation; evaluated on PerLTQA: A Personal Long-Term Memory Question Answering Dataset (PolyU, 2402)