AI deep research API that checks every cited claim against its source
Stage
Startup
Startup
Founded
2024
2026
Based in
US
US
Pricing model
Freemium
Paid
Pricing
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
Searches 45+ structured sources including SEC filings, statistics agencies, scholarly indexes, books and government records
Workspace vault with searchable full-text source storage and independence clustering
Integrated MCP server for Claude, Cursor, ChatGPT and other clients
Contradiction mapping identifies and investigates disagreements in evidence
Automatic report generation with verified citations before shipping
Citation verification API for external documents
Markdown import and export for vault documents
Integrated Answers MCP with ask and search tools for AI agents
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
Every cited claim is verified against the original source before report delivery
Searches structured sources like SEC filings and scholarly databases alongside the open web in one call
Delivers answers with word-for-word quotes so readers can verify in one click
Open-source CLI that powers the hosted service, maintaining feature parity
Pay-as-you-go pricing with no minimum commitment or sales team required
Vectorize
Hyperresearch