YourMemory

YourMemory's pitch is narrower and more honest than most memory-layer marketing: it does one job — persistent, decaying recall for AI agents — and it measures that job on public datasets instead of writing adjectives. The Ebbinghaus-inspired forgetting curve is the actual differentiator. Memories are born with an importance score, linked to related knowledge, reinforced each time they're recalled, and faded when they sit unused, which is a meaningfully different design from a vector store that hoards every chunk forever and returns whichever chunks match a query. The comparison table on the homepage draws that line explicitly: vector DBs return chunks and never prioritize or forget; YourMemory keeps facts that merge, decay, and connect. The Memory Browser is where that abstraction becomes visible — you can watch a memory's strength percentage drop as it ages and jump back up after it's recalled, and see recalls, importance, category, and last-accessed on each entry. The Audit tab extends that into compliance territory with a tamper-evident hash chain covering every read, write, and delete at 90-day retention, which is more than most local-first tools bother to build. Benchmarks are the second leg: 89.4% Recall@5 on LongMemEval, 84% less token waste over 30 sessions, and +16pp recall against Mem0 on LoCoMo, all with benchmark code in the repo. The 84% token number matters practically — instead of re-sending growing chat history each turn, the agent injects a flat set of recalled memories, so context cost stops compounding. Two supporting tools reinforce the cost story: a 30-second Instant Audit prompt you paste into Claude, ChatGPT, Gemini, Cursor, or Copilot (which needs no knowledge of YourMemory and has the AI measure and compress its own conversation), and a calculator that tokenizes an exported chat history entirely in your browser. That local-only tokenization is consistent with the rest of the product's posture — no API key, no data leaving your machine. Setup is deliberately minimal: pip install, register with an emailed 6-digit-code token, run setup, and the UI is live at localhost:3033/ui. Where YourMemory is weakest is scope. It is a memory layer, not an assistant — you still bring Claude, ChatGPT, Gemini, Cursor, or Copilot, and you integrate via MCP. The free tier is local-only per the published details, Enterprise shared team memory is distributed as a private build rather than something you configure yourself, and the Memory Browser and Audit views are developer-facing panels rather than a polished product UI. If your need is a managed cloud memory service with an end-user interface, Mem0 and Zep are the better fits. If your need is agent memory you can inspect line by line, verify against a hash chain, and run without a data-egress conversation, YourMemory is the more interesting choice.