JitMem shifts agent memory to read time

JitMem makes a compelling case that agent memory should preserve experiences until their future use is known, though read-time curation shifts complexity and cost into every retrieval.

• –Task-conditioned summaries avoid irreversible information loss from fixed reflections or skills.
• –JitMem improved over the strongest baseline by 16.2 points on ALFWorld, 16.3 on WebShop, and 3.9 on τ²-bench.
• –The curator trains against immediate task success, simplifying credit assignment compared with write-time memory.
• –Compact payloads reduced input tokens by 50.3%–56.3% and executor steps by 28.4%–31.4% in the paper’s tests.
• –Production systems will still need strong retrieval, storage controls, and safeguards against retaining sensitive raw trajectories.