Agent Memory in 2026: Vendors Claim 92.5 on LoCoMo, a Plain Filesystem Scored 74, and Every Memory Product Lost to BM25
Agent memory systems in 2026, kept honest: Mem0's 66.9 on LoCoMo in its own paper versus 92.5 on its managed platform a year later, Zep's 75.1 rebuttal and the three bugs behind Mem0's 66.0 for Zep, Letta's 74.0 with only a filesystem, MemoryAgentBench putting every commercial system under 45 on retrieval against BM25 at 60.5, Hindsight's 89.6, first-party memory from ChatGPT, Claude and Gemini with dates, both labs' compaction APIs, what re-reading 115k tokens costs at cache-read prices, a Postgres and pgvector layer with supersession, and why memory poisoning is still unfixed.
13 minSep 3, 2026Top AI Agent Sandbox Providers: An Engineer's 2026 Roundup
A working engineer's roundup of the top AI agent sandbox providers: isolation, hosting, persistence and pricing compared — including the one I built myself.
10 minSep 3, 2026AI Agent Sandbox Runtime: The Six Options and Who Uses Them
Firecracker, gVisor, Kata, containers, V8 isolates and libkrun compared — how each isolates, what it costs in memory, and which sandbox vendors run it.
10 min