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SoL-Pi: Researchers Cut Coding Agent Costs by a Third

SoL-Pi findings show 44–49% token reduction and ~$5–$13 hourly savings

3 Sep 18 6:40 PM · 7d ago · 1 post · 4 comments · 1 source · development 3 of 3

Detailed results from the SoL-Pi study show token traffic falls 44.7–49.0%, API costs drop by roughly one third, with estimated hourly savings of $8.75–$13.50 against native Codex and Claude Code harnesses and $4.36–$5.71 against the Pi baseline. Performance matches across GPT-5.6 Sol and Opus 5 on the 51-task EdgeBench evaluation.

SoL-Pi findings show 44–49% token reduction and ~$5–$13 hourly savings
academy.dair.ai

“estimated hourly savings are $8.75-$13.50 relative to native Codex and Claude Code harnesses, and $4.36-$5.71 relative to Pi.”

SoL-Pi researchers, Authors · hn ↗

Haozhe Liu Lead researcher, SoL-Pi studyRun-Ze Fan Lead researcher, harness components studyNVIDIA, NTU, MIT Collaborating institutions

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Peak 7 pieces in 3h at Sep 18, 8 AM; 32 pieces over 9 days (8 articles · 12 posts · 12 comments) Sep 17, 8 AM — 1 piece · 1 post — Hacker News 1Sep 17, 11 AM — quietSep 17, 2 PM — quietSep 17, 5 PM — quietSep 17, 8 PM — quietSep 17, 11 PM — 4 pieces · 4 articles — Newswires 4Sep 18, 2 AM — quietSep 18, 5 AM — quietSep 18, 8 AM — 7 pieces · 2 articles · 1 post · 4 comments — Hacker News 5, Newswires 2Sep 18, 11 AM — 6 pieces · 6 comments — Hacker News 6Sep 18, 2 PM — 2 pieces · 2 comments — Hacker News 2Sep 18, 5 PM — 2 pieces · 2 posts — Hacker News 1, Mastodon 1Sep 18, 8 PM — quietSep 18, 11 PM — quietSep 19, 2 AM — quietSep 19, 5 AM — quietSep 19, 8 AM — quietSep 19, 11 AM — quietSep 19, 2 PM — quietSep 19, 5 PM — quietSep 19, 8 PM — quietSep 19, 11 PM — quietSep 20, 2 AM — quietSep 20, 5 AM — quietSep 20, 8 AM — quietSep 20, 11 AM — quietSep 20, 2 PM — quietSep 20, 5 PM — quietSep 20, 8 PM — quietSep 20, 11 PM — quietSep 21, 2 AM — quietSep 21, 5 AM — quietSep 21, 8 AM — quietSep 21, 11 AM — quietSep 21, 2 PM — quietSep 21, 5 PM — quietSep 21, 8 PM — 1 piece · 1 post — Hacker News 1Sep 21, 11 PM — quietSep 22, 2 AM — quietSep 22, 5 AM — 1 piece · 1 post — Hacker News 1Sep 22, 8 AM — quietSep 22, 11 AM — quietSep 22, 2 PM — quietSep 22, 5 PM — quietSep 22, 8 PM — quietSep 22, 11 PM — 2 pieces · 2 articles — Newswires 2Sep 23, 2 AM — 1 piece · 1 post — Hacker News 1Sep 23, 5 AM — quietSep 23, 8 AM — 1 piece · 1 post — Hacker News 1Sep 23, 11 AM — 1 piece · 1 post — Hacker News 1Sep 23, 2 PM — 1 piece · 1 post — Hacker News 1Sep 23, 5 PM — quietSep 23, 8 PM — quietSep 23, 11 PM — quietSep 24, 2 AM — quietSep 24, 5 AM — 2 pieces · 2 posts — Hacker News 2Sep 24, 8 AM — quietSep 24, 11 AM — quietSep 24, 2 PM — quietSep 24, 5 PM — quietSep 24, 8 PM — quietSep 24, 11 PM — quietYesterday, 2 AM — quietYesterday, 5 AM — quietYesterday, 8 AM — quietYesterday, 11 AM — quietYesterday, 2 PM — quietYesterday, 5 PM — quietYesterday, 8 PM — quietYesterday, 11 PM — quietToday, 2 AM — quietToday, 5 AM — quietToday, 8 AM — quietToday, 11 AM — quietToday, 2 PM — quiet 123
1Red-teaming study examines blocking…2Research community discusses harness…3SoL-Pi findings show 44–49% token…
Sep 18Sep 19Sep 20Sep 21Sep 22Sep 23Sep 24yesterdaynow · 4:30 PM ET

Reported in the same hours no headline names this development itself — these 2 claims were published in its stretch

  1. 1 outlet RSIAgent: Autonomous Exploration for Recursive Self-improvement in New Environments

    first by arXiv cs.AI, 3d ago

  2. 1 outlet RRSI: Regularized Recursive Self-Improvement of Agent Harnesses

    first by arXiv cs.AI, 3d ago

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