Self-hosted: Free, MIT licensed. Hindsight Cloud: Pay-as-you-go with free credits to start. Retain (store memories) $10.00 per million tokens, Recall (retrieve memories) $0.75 per million tokens, Reflect (synthesize patterns) $0.05 per call, Iris Extract (structured extraction) $7.50 per million tok
Not given
Key features
Per-user persistent memory with preferences, history and decisions kept separate
Cross-session persistence allows context to survive weeks between interactions
Fast parallel retrieval in under 100ms through four strategies running simultaneously
Works with any LLM without losing learned context when swapping models
Learns from mistakes and corrects behavior on repeated problems
Automatic pattern detection synthesizes individual facts into consolidated knowledge
Conflict detection preserves both old and new states with timestamps when facts change
Integrates with 20+ coding agents including Claude Code, Cursor, and Copilot
Offline verification in milliseconds
Cryptographic passports for agents
Revocation under 60 seconds
Authority classes and assurance tiers
No central authority calls required
Local registrar lifecycle
Request signing with short-lived keys
Public conformance testing
Fail-closed HTTP gating
Appeal mechanism for revocation
What makes it different
94.6% retrieval accuracy on LongMemEval-S, beating next-best system at 74.0%
MIT licensed open source with no usage limits, telemetry or restrictions
Reflection layer automatically builds judgment and mental models over time without manual tagging
Entity resolution handles hundreds of entities with 99.5% query reduction
Neutral non-profit root barred by charter from issuing credentials or computing scores
Fully open standard with published conformance vectors and reproducible releases
Verification runs offline without phoning home to any authority
Four independent implementations agreeing on all conformance vectors
Public recorded ceremony to establish the root across independent custodians
Vectorize
AINRA