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STACKPLANNER: When Agents Learn to Forget

Enterprise agents usually fail in an undramatic way. They do not rebel. They do not suddenly become conscious. They do not announce, with cinematic timing, that humanity has been replaced by a spreadsheet. They simply lose the thread. A research agent searches once, finds something half-relevant, and keeps dragging that result through the rest of the task. A report-writing workflow collects too many fragments and then forgets which ones were actually useful. A coordinator delegates to sub-agents, receives noisy outputs, and treats every message as equally important because, apparently, all context is sacred now. By the final step, the system has not become more intelligent. It has become a very expensive meeting transcript. ...

January 12, 2026 · 16 min · Zelina
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Lost in the Long Game: What UltraHorizon Reveals About Agent Failure at Scale

Budget is the most comforting word in enterprise AI. Give the agent a bigger context window. Give it more tool calls. Give it more time. Give it a notebook, a browser, a Python interpreter, a reminder to “think step by step,” and perhaps a small motivational speech about being thorough. Surely the system will become more reliable. ...

October 3, 2025 · 16 min · Zelina