Building a second brain with GPT Sol 6.1 for writing and Jev for decisions
Writing and judging are split: Sol writes pages only from real sources, while Jev checks duplicates, contradictions, relevance and whether evidence is sufficient, at $0.042 per million tokens.
the cheapest second brain stack right now: GPT Sol 6.1 + Jev... the trick is splitting writing from deciding, but there's a smart way to set it up: - step 1: one folder: raw/ for sources, wiki/ for pages, CLAUDE.md or AGENTS.md as the rulebook - step 2: Sol writes every page, but only from real sources, never from its own memory - step 3: Jev decides the small stuff: duplicate? contradicts? relevant? enough evidence? - step 4: when you ask a question, Jev picks the pages, Sol answers only from those, citing sources - step 5: Sol on medium for live questions (~5s), high for the weekly cleanup (~1 min wait) and it's the cheapest version of this setup yet... Sol scores 2 points under Astra at about 1/8 the cost per task Jev costs $0.042 per million tokens, output free i like to start from Better Second Brain on GitHub: one paste into Claude Code or Codex, Jev is a single flag
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