subquadratic attention · long context · RAG-optional

Get the Long-Context Playbook

The companion to the video on SubQ / Subquadratic and its SSA (Subquadratic Sparse Attention) architecture. Inside: the 30-second mental model for why O(n²) attention made long context so expensive, a plain decision framework for exactly when long context wins vs when RAG still rules, the verified SubQ 1.1 Small benchmarks (56× faster, 64.5× less compute, RULER 99.12, GPQA 85.4 — with the honest caveats), 5 copy-paste prompts to reason over a whole codebase / contract / document set, and the subquadratic landscape (DeepSeek, MiniMax, Google, Moonshot). All SubQ figures are vendor-reported claims, not independently reproduced.

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