billion-context keeps coding sessions alive for days
billion-context is an open-source context-compression proxy for coding agents, folding older conversation into layered summaries so sessions can continue for days or months within a smaller context window. It supports clients including Claude, Codex, Cursor, Aider, and GitHub Copilot CLI.
billion-context attacks one of the biggest bottlenecks in agentic coding: context growth, not model intelligence.
- –It sits between coding agents and Anthropic/OpenAI-compatible APIs, making the approach broadly portable.
- –Reversible compression, decompression, and context search are more useful than simply truncating old messages.
- –Smaller active contexts could reduce token costs while preserving high cache-hit rates.
- –The trade-off is summary fidelity: developers should still anchor critical state in tests, commits, and project documentation.
- –Its MIT license includes an additional attribution requirement for products that expose the software to users.
DISCOVERED
40m ago
2026-11-10
PUBLISHED
2h ago
2026-11-10
RELEVANCE
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