Posts that mattered
743 posts by 495 authors: the X posts, essays and blog posts our events cite, newest first.
September 2026, continued
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“Grok is pulling away as the dominant agentic trading harness on Coinbase for Agents…”
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“眩晕，瘫坐，原子弹爆炸。 这一刻的Opus5.5宛如创世神。”
Cited in Box character edits a Chinese cartoon inside a toy timeline
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“You can now generate an entire 3blue1brown style video from any research paper with…”
Cited in An 8-minute 3Blue1Brown-style video summary of a research paper, made by Opus 5.5
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“Opus 5.5 终结了比赛！ 用 Opus 5.5 重做了《桃花源记》，还是 three.js…”
Cited in Peach Blossom Spring (桃花源记) rebuilt in three.js with Opus 5.5
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“last year, after reading If Anyone Builds It, I had a long conversation with claude…”
Cited in A doomer song Claude Opus 4.1 wrote about alignment, visualised by Opus 5.5
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“Same prompt. Opus 5.5 built Sakura Crossing in 2 hours.”
Cited in Sakura Crossing: explorable Japanese town rebuilt by Opus 5.5 in 2 hours (vs 24 hours for Opus 5)
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“Opus 5.5に 「原神クラスのゲームを作って」 と無茶振りした結果。 うん……すっげーーーーここから頑張れば、まぁ……いや、まだ原神はキツイな……w…”
Cited in “Make a Genshin-class game”: Opus 5.5 builds an anime open-world prototype in Godot
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“holy shit i asked claude to make a video on western civiization”
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“Meta teased its next major model as coming soon during the keynote.”
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“我操，Opus 5.5 做这种前端的图像图形，做产品宣传视频太牛逼了！ 让他给我这个 CodePilot 产品做了个宣传片，太猛了，一键生成的。 简直吊打前几天的…”
Cited in Opus 5.5 makes a one-click promo film for the CodePilot app
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“Opus 5.5: artistic interpretation of Rick Astley”
Cited in “Opus 5.5: artistic interpretation of Rick Astley” in a swirling Starry Night sky
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Follow-up video using Donald’s workflow
Third major P(doom) video (~670k views); proves the prompt is reusable.
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“JUST IN: Palantir Co-Founder Peter Thiel says Pope Leo XIV was a ‘useful idiot for…”
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“My wife: Can AI help us see how the new bed will fit in Mila’s room?”
Cited in “Can AI help us see how the new bed will fit?”: Opus 5.5 builds a floor plan with a 3D walkthrough
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“after Opus 5.5 it actually hurts to look at anything GPT 6 Astra designs gave both…”
Cited in Opus 5.5 vs GPT-6 Astra: the same “showreel” prompt side by side
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“Sources: the NSA told lawmakers it is spending billions this year to test AI models…”
Cited in Report: NSA told lawmakers it is spending billions this year testing frontier AI models
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“opus 5.5 is f*cking cracked at motion design this entire video is code, 0 after…”
Cited in One shape morphs through a dozen UI states on the beat
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“Opus 5.5 designing LEGO 👀 I asked it to design a Microduck I can build with real…”
Cited in Opus 5.5 designs a life-size LEGO Microduck from 1,113 real parts, with a 141-page build booklet
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“HOLY SHIT. OPUS 5.5 IS CRAZY.”
Cited in Austerlitz, the morning of 2 December 1805, as a 5-minute film written entirely in code
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“Opus 5.5 medium, a few iterations later.”
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C5R: ‘In 12 weeks, we built a research facility that is run entirely by AI’ (SciUniverse benchmark launch)
Launch post for Facility-0 and the SciUniverse real-lab benchmark; 787k views from an account with about 3k followers.
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P(doom) -> P(boom) with a ‘flash model’
Non-Claude answer song: Suno + MiniMax H3 via fal, about $20.
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Stroke of a Pen: code-only Bitcoin music video
A non-P(doom) Opus 5.5 music video; revisions described.
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Oracle: ‘Project Jupiter remains on our planned schedule’
Oracle’s official response to reports of a force-majeure notice on the New Mexico Stargate campus (361k views).
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Thread on the song P(Doom) and its evolution
A thread tracing the song’s history. Only the first post was read.
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I made this with one prompt using Opus 5.5
The most-viewed work of the genre (~3.6M views): ‘I spoke to my computer for 5mins, claude worked for 12 hours’.
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Anthropic: Claude discovers a previously unknown CRISPR-like enzyme system
Announces the first result from Anthropic’s biology lab, a claim of AI-led discovery that was then publicly disputed.
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Full prompt for the Opus 5.5 P(doom) video
The long dictated prompt, which became a template for Pleometric, makevoid and others. It is a ‘note tweet’ that the syndication endpoint truncates.
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Lucas Harrington: the Anthropic enzyme find is routine genome mining; the hard part is function
The most-cited expert pushback on Anthropic’s claim of an AI-made biological discovery.
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Alex Kontorovich: ‘WOW!! Zeta(5) is irrational! Here’s a Lean formalization’
Announces the complete Lean formalization (mo271/zeta5) of the ζ(5) proof (~74k views).
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Skild AI: Physical Self-Play, S1 learns soccer
Official announcement of self-play-trained humanoid soccer with sim-to-real transfer.
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Claude Opus 5.5: The System Card
Detailed critique of the Opus 5.5 system card, arguing it is effectively a Tier 2 cyber model.
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“Opus5.5（AI）で、超簡単に「文字PV風動画」を作れるジェネレーター『JIZURA 字面』を開発しました。スマホからも動かせます。（まだ公開前）…”
Cited in JIZURA: a lyric-video generator app built with Opus 5.5, rendering kinetic Japanese text on a phone
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“omg…that i made this with Claude Opus 5.5 and Seedance 2.5 nobody is teaching you the…”
Cited in Realistic AI video made with Claude Opus 5.5 and Seedance 2.5, with the full workflow in a thread
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“Opus5.5で本能寺の変を解説させてみた。 1発でこのクオリティ凄くないかw もう少し修正したらYouTube動画もOpus5.5のみで編集でよくないですか。”
Cited in Honnō-ji Incident explained in 60 seconds: video by Opus 5.5, voice by Gemini 3.8 TTS
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Opus 5.5 pop-punk single
Music and video synthesized entirely in Claude-written JavaScript.
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Opus 5.5 rap single ‘No Samples’
Rap single whose audio is synthesized in JS by Opus.
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“不要再测鹈鹕骑车和Threejs了，Claude Opus 5.5做知识、科普类的视频简直无敌！ 我订阅的是Max…”
Cited in Five millennia of Chinese history in 2:38: hand-drawn-style recap made by Claude Opus 5.5
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“⚡ Meet Qwen-Audio-3.1!”
Cited in Qwen-Audio-3.1-Realtime (Plus)
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“Claude Opus 5.5 writes a fugue in the style of Bach.”
Cited in Claude Opus 5.5 – Fugue in C minor
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“opus 5.5 is something else..”
Cited in Real-time 3D water one-shotted by Opus 5.5 from a video reference
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“Ever wonder what $1874.40 of Opus 5.5 tokens looks like?”
Cited in “What $1874.40 of Opus 5.5 tokens looks like”: real-time 3D island with wildlife and day-night cycle
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“Opus 5.5 is incredible at instructional video generation.”
Cited in Launch video for an inference startup in one minute for about $2
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Claude had access to SD2.5, elevenlabs, libraries of references, and the repo
States the tools Opus had.
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“QUÉ!? Locura Le he pedido a Opus 5.5 que me haga una animación en pixel art de una…”
Cited in Pixel-art animation of a neural network learning to read a handwritten 2
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“I’m not upping my p(doom), but this is a catchy tune.”
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Functional Emotions song + Opus 5.5 video
~1.05M-view Claude-written song about Anthropic’s emotions paper with an Opus 5.5 video.
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“Cars used to just take you to work. Now they do some of it on the way.”
Cited in SpaceXAI launches Grok Bot, always-on agent ‘teammates’ with their own cloud computers