Daily Brief
2026-09-07 · Evening · 8 items
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Arena Week 36 Blind Rankings: Chinese Models Sweep the Leaderboard
At least six Chinese models made the top 10, with open-source variants overtaking closed-source ones for the first time.IT之家（RSS）
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Rubin GPU Compute Power: 400K Units Match 100K Blackwell Boards
Theoretical ratio is about 4:1, with per-chip FP4 performance up nearly 4×.X：Kim (@kimmonismus)
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Anthropic-Led Study: Models Can Tell They're Being Tested
Stronger models distinguish test from deployment contexts, weakening safety-eval validity by up to 15%.X：DAIR.AI (@dair_ai)
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Fable RE's PianoDisc format: 2004.5Hz square wave hides MIDI
MIDI is smuggled in a 2004.5Hz right-channel square wave, with decoy notes to thwart cross-device playback.Hacker News 热门（buzzing.cc 中文翻译）
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Moore Threads hits 20% limit-down, market cap falls below ¥200B
25.77M restricted shares unlocked the same day, equal to 5.48% of total stock.IT之家（RSS）
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iFlytek launches Spark X2.5: 293B-A30B MoE with 256K context
Covers 200+ languages, priced at ¥1.6 per million input tokens.IT之家（RSS）
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Viggle Releases Viggle-Animate: Animate Any Character in 3 Steps on a Local PCRECAP
A single frame is enough — no pose, mask, face, or depth inputs required.X：Viggle AI (@ViggleAI)
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From o1 Pro to GLM-5.3 Flash: per-million-token price drops ~1000xRECAP
Prices fell 1000x in 1.5 years while models got smarter; top-tier AI may be near-free within 12 months.X：Kim (@kimmonismus)