What's moving through AI, ranked by lead time.
Radar is an hourly index of what's moving through the AI ecosystem, ranked by where each story sits on the lead-time gradient: papers become repos become community threads become analysis. The earlier a story is caught, the more head start you have before the crowd. Every row carries its receipts — which source saw it first, how many independent sources have it, how long ago — so the ranking explains itself. It's the public face of the same pipeline that feeds Vlad's Newsletter.
frozen 31 Jul 2026, 23:17 UTC · 67/78 feeds live · 19,288 tracked since 12 Jun
- 1 June in Servo: real world compat, media queries, SharedWorker, and more servo.org · 6h
- 2 SOTA alignment assessments don’t strongly update us against misalignment lesswrong.com · 24m
- 3 Show HN: Nudge: A desktop productivity pet app github.com · 54m
- 4 Show HN: I Built a (Country) Geography Guessing Game whatcountryisit.com · 54m
- 5 Show HN: I worked on a new browser for 2 years, today it passed Acid 3 code.intellios.ai · 2h
297 stories entered the watched feeds in the last 24 hours — 25 in papers, 9 in repos, 232 in community, 31 in analysis. The scored board skews to Community (39 of 40). 2 stories are heating across independent sources, and the median lead across the ledger's 23 observed fires is 4h — measured, not estimated. Freshest receipt, 16h ago: caught in Hacker News front 11h before Dynomight carried it. The oldest survivor has held the board for 9h.
- Community → Analysis +11h lead Hacker News front first · then Dynomight 16h agoSo you want to use plants to reduce CO₂
- Community → Analysis +2h lead Hacker News front first · then Google DeepMind 28h agoGemini Robotics 2 brings whole body intelligence to robots
- Community → Analysis +2h lead Hacker News front first · then Construction Physics 30h agoWhy Is Everyone Trying to Build a Solid-State Battery?
- 1June in Servo: real world compat, media queries, SharedWorker, and moreservo.orgLive Signal Community · 6h old · seen in 2 sources HEATING ×2
- 2SOTA alignment assessments don’t strongly update us against misalignmentlesswrong.comLive Signal Community · 24m old · via LessWrong
- 3Show HN: Nudge: A desktop productivity pet appgithub.comLive Signal Community · 54m old · via Show HN
- 4Show HN: I Built a (Country) Geography Guessing Gamewhatcountryisit.comLive Signal Community · 54m old · via Show HN
- 5Show HN: I worked on a new browser for 2 years, today it passed Acid 3code.intellios.aiLive Signal Community · 2h old · via Show HN
- 6Show HN: Agents that learn and remember. On your machine, under your controlgithub.comLive Signal Community · 2h old · via Show HN
- 7The temporal lockbox: a hardened observatory for AI misalignmentlesswrong.comLive Signal Community · 2h old · via LessWrong
- 8Show HN: old reddit is back (without login) via 'shreddit'.github.comLive Signal Community · 2h old · via Show HN
- 9
- 10Show HN: Do Skill.md Linters Matter? An Empirical Studydo-skills-md-linter-matter.onrender.comLive Signal Community · 2h old · via Show HN
- 11Show HN: Penca – branchable, versioned OLTP+OLAP on one open copy of your datagithub.comLive Signal Community · 2h old · via Show HN
- 12Apple Will 'Watch Everything Burn' When AI Bubble Burstsasymco.comLive Signal Community · 2h old · via Hacker News front
- 13Loops (YC W22) Is Hiring a Product Educatorycombinator.comLive Signal Community · 2h old · via Hacker News front
- 14
- 15Demystifying DRAM Read Disturbance: RowHammer and RowPress Phenomenaarxiv.orgLive Signal Community · 3h old · via Hacker News front
- 16Show HN: Collaborative Docx Editor with MS Word Paritycollab.word-in-web.comLive Signal Community · 3h old · via Show HN
- 17Show HN: How to build and self-host a code review agenttrytilde.aiLive Signal Community · 3h old · via Show HN
- 18Show HN: Brainstorm – a local-first, AI-native OS for knowledge workgetbrainstorm.onlineLive Signal Community · 3h old · via Show HN
- 19Show HN: I built a real-time thermodynamic phase space for cognitive stressacademia.eduLive Signal Community · 3h old · via Show HN
- 20Taboo “equilibrium”: Less confused frames for research on AI bargaininglesswrong.comLive Signal Community · 3h old · via LessWrong
- 21
- 22Arch Linux disables AUR package adoptionlwn.netLive Signal Community · 9h old · seen in 2 sources HEATING ×2
- 23Predictive Speculative KV Replication for Bursty LLM Inferencejwlabs.vercel.appLive Signal Community · 3h old · via Hacker News front
- 24Show HN: Claude MIDI Twister – An agent visualizer for a DJ MIDI controllerdylanfisher.comLive Signal Community · 3h old · via Show HN
- 25Show HN: A bookshelf you can share as a linkdigitalshelf.meLive Signal Community · 4h old · via Show HN
- 26Show HN: Reading Pacer – A "Struggle Detector" for kids learning to readreadingpacer.comLive Signal Community · 4h old · via Show HN
- 27Show HN: I rebuilt my 2008 soccer/lineup sitenews.ycombinator.comLive Signal Community · 4h old · via Show HN
- 28Tailscale didn't stop the Hugging Face intrusiontailscale.comLive Signal Community · 4h old · seen in 2 sources
- 29
- 30Nuclear Waste Cleanup: DOE Is Missing Opportunities to Apply Lessonsgao.govLive Signal Community · 4h old · via Hacker News front
- 31Show HN: An Unexpected Computer – Universal computing: echo, ed, test and exec [pdf]seriot.chLive Signal Community · 5h old · via Show HN
- 32Golang proposal: container/: generic collection typesgithub.comLive Signal Community · 5h old · via Hacker News front
- 33Show HN: Usbatlas – simple CLI utility to see what USBIP devices are attachedgithub.comLive Signal Community · 5h old · via Show HN
- 34Orca-Bench: How Ready Are Language Model Agents for Oncall?arxiv.orgLive Signal Community · 5h old · via Hacker News front
- 35Stateless MCP has recaptured my interest (and inspired mcp-explorer and datasette-mcp)simonwillison.netAI Firehose Analysis · 6m old · via Simon Willison
- 36Using the railway network as a flatbed scanner [video]media.ccc.deLive Signal Community · 5h old · via Hacker News front
- 37
- 38
- 39Show HN: Schema-backed, Git-based structured state for agentic systemsnews.ycombinator.comLive Signal Community · 5h old · via Show HN
- 40Everyone is building LLM routers, we deprecated oursmanifest.buildLive Signal Community · 5h old · via Hacker News front
How Radar works
The gradient. Stories travel through the AI ecosystem in a rough sequence: they appear first in papers (arXiv, Hugging Face) or repos (GitHub), then surface in community discussion (Hacker News, Lobsters, LessWrong), then get interpreted in analysis (operator newsletters and essays). Radar ranks by where a story sits on that gradient. The earlier it is caught, the more lead time you have before it reaches consensus. The spectrum at the top of the page shows the last 24 hours of that flow — every story that entered the watched feeds, counted at the station where it first appeared.
The score. Each story gets a recency-decayed signal score. Every source tier carries a weight and a half-life, so live signal moves fast and fades fast while analysis sources move slowly and stay relevant longer. A story scores higher when two or more independent source families carry it — corroboration, not popularity, which is why five feeds of the same site count once. A small bonus applies when a story has visibly climbed the gradient. Stories past their tier's maximum age expire from the board.
Heating and lead time. A story is heating when it has surfaced in two or more independent source families. When the same story is observed first at an earlier stage and later at a higher one, Radar records the gap in hours — for example, seen on arXiv fourteen hours before it reached the Hacker News front page. That gap is the reader's lead time, and it is a measured span, never an estimate.
The honesty rule. Every value on this page is an observed fact from the feed log — which source carried a story, when, and how many. Radar makes no claim about what a story means; that is the newsletter's job. When a reading does not exist yet — no stories heating, nothing upstream — the page says so rather than inventing one.
- The spectrum band
- A filled flame tick is an early, lead-time-rich stage; a hollow tick is a later stage; a hollow ring on an empty span is a station with nothing on it yet.
- Signal class
- The tier chip: Live Signal moves fast and decays fast; analysis sources stay relevant longer. The ranker weights each accordingly.
- heating
- The same story in two or more independent source families — not two feeds of one site.
- seen in / via
- How many families carried it, or the single source that did.
Once a week, the operator read on what actually changed and the move it calls for. No digest, no hype.
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