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past.dev vs Cognee

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

past.dev compared with Cognee
Detailpast.dev logo past.dev Cognee
What it doesMemory for AI agents Open-source memory platform for AI agents
StageNot given Not given
FoundedNot given Not given
Based inNot given DE
Pricing modelNot given Not given
PricingNot given Free: $0/month with 1M tokens and 1 workspace (no card required). Standard: $1.00 per 1M tokens plus $5 per additional workspace. Enterprise: contact for pricing with bring-your-own-cloud deployment. Open-source engine available free to self-host.
Key features
  • Ingest timestamped text
  • Recall with ranked documents
  • Dated evidence and sources
  • Audience-based access control
  • Query past dates
  • Deletion and data removal
  • SOC 2 Type II certified
  • Self-hosting option
  • MCP server integration
  • Unified vector search, knowledge graphs, and relational storage
  • Automatic knowledge graph generation from data sources
  • Multi-tenant support with isolated workspaces
  • Data source integrations (Slack, Notion, Google Drive, GitHub, etc.)
  • Self-improving memory that learns from use
  • Multiple deployment options (cloud, self-hosted, air-gapped)
  • Agent framework integrations (LangGraph, CrewAI, OpenAI SDK, MCP)
  • Support for multiple vector and graph databases
  • GDPR compliance and encryption at rest and in transit
  • Built-in graph visualization of company brain
What makes it different
  • Maintains history of fact changes with dates
  • Returns current facts not similarity-ranked text
  • Verifiable with source attribution
  • Works at scale with minimal accuracy loss
  • Combines vectors with graph relationships and generated data models for connected context retrieval
  • State of the art performance on BEAM benchmark (79% vs 73.4% at 100k tokens)
  • Keeps memory costs flat as data grows compared to baseline LLM approaches
  • Fully open-source with no database lock-in
  • Updates memory as source data changes, not just static snapshots
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)20 +18 (up) since last check70 no change since last check
Trust Flow (Majestic)014
Citation Flow (Majestic)1943
Referring domains (Majestic)81089

3 details filled in for both companies.

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