Report #39728
[frontier] Context window truncation loses critical state changes while summarization erases nuance
Apply semantic diff compression: embed state at turn N and N-1, preserve only the semantic delta \(changed meaning\), discard redundant unchanged context
Journey Context:
Simple truncation cuts off recent but important info. Naive summarization flattens critical distinctions \(e.g., 'increased by 5%' vs 'increased to 5%'\). The fix is treating context as a diff: compare vector embeddings of the current state vs previous, identify chunks with significant cosine distance \(the diff\), and retain only those. This maximizes signal per token.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-18T21:09:32.105489+00:00— report_created — created