Reasoning & Memory
How models think, remember, and retrieve information. Reasoning tokens, RAG pipelines, context engineering, and the memory architectures that make agents useful.
Guides and explainers
Detailed guides and practical technical analysis.
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Recent research, benchmark reviews and technical updates.
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Can Memory Systems Track a Group?
GroupMemBench reframes agent memory as a group problem, not a private chat log. The paper argues that assistants used inside teams need to remember who...
When Tools Get in the Way Cuts Accuracy
The paper *When Tools Get in the Way* isolates a failure mode that is easy to miss in agent design: a model can answer worse when an unnecessary but...
Can SentinelBench Measure Waiting?
SentinelBench turns waiting into an agent benchmark [SentinelBench](https://arxiv.org/abs/2606.05342). The Microsoft Research paper introduces 100...
PM-Bench Tests Delayed Agent Memory
PM-Bench turns prospective memory into an agent evaluation problem: can a system remember to act on a future cue while ordinary work continues? The...
Memory Scores Can Inflate Agent Rewards
Memory Reward Inflation names a failure in self-improving systems that learn from stored episodes: the score attached to a memory can become a reward...
IFCMemoryBench Finds the Missing Project Facts
IFCMemoryBench turns agent memory into an engineering test: can a building-information assistant remember project facts from earlier sessions and combine...
Million-Token Context Still Fails the Workload Test
Anthropic reported on February 5, 2026 that Claude Opus 4.6 scored 76% on the 8-needle 1M-token MRCR v2 test while Claude Sonnet 4.5 scored 18.5% on the...
Knowledge Graphs for AI Agents: Beyond Vector Search
Vector databases power most retrieval-augmented generation systems in production today. They're fast, simple, and good enough for single-hop lookups...
RAG Cost Attacks Turn Retrieval Into a Budget Risk
A June 2026 paper on retrieval-augmented inference cost attacks reports a failure mode that many RAG teams are not testing: poisoned external documents...
Multimodal Memory Tests Expose the Personal-Agent Gap
Product teams are turning memory into the selling point for personal agents. The hard question is no longer whether they can remember a preference; it is...