Trained agentic context management: 8K-context small model matches GPT-5.4 at 1M on OOLONG

xennygrimmato_ · x · 2026-10-06

Bryce Sandlund's new arXiv paper trains long-context behavior via the simplest possible harness: a self-call tool and a tool to read arbitrary token ranges from the input. Fine-tuning Qwen3.6-35B-A3B on diverse synthetic data, the 8,000-token-context model matches GPT-5.4 with 1M tokens on OOLONG-synth for docs over 40K tokens—no REPL environment, no compaction. 17 pages, code released, under review.

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