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 21 Jul 2026, 23:15 UTC · 67/78 feeds live · 16,401 tracked since 12 Jun
- 1 FreeInk: Open ecosystem for e-readers freeink.org · 5h
- 2 Web-based Jujutsu revset explorer & debugger juju.bi · 5h
- 3 Show HN: Pure PHP server 10x throughput vs NGINX+FPM now supports sockets, rooms github.com · 12m
- 4 Show HN: An interactive game of British Columbia bigfootsbc.ca · 12m
- 5 Show HN: Superserve – Firecracker microVM sandboxes for long-running AI agents superserve.ai · 18m
706 stories entered the watched feeds in the last 24 hours — 358 in papers, 6 in repos, 298 in community, 44 in analysis. The scored board skews to Community (39 of 40). 3 stories are heating across independent sources, and the median lead across the ledger's 18 observed fires is 5h — measured, not estimated. Freshest receipt, 1h ago: caught in Hacker News front 2h before OpenAI News carried it. The oldest survivor has held the board for 8h.
- Community → Analysis +2h lead Hacker News front first · then OpenAI News 1h agoOpenAI and Hugging Face partner to address security incident
- Papers → Community +2h lead HF Daily Papers first · then Hacker News front 4d agoQubes OS Security in the Public Record
- Papers → Community +20h lead arXiv cs.AI first · then Hacker News front 5d agoMathematics of Data Science
- 1FreeInk: Open ecosystem for e-readersfreeink.orgLive Signal Community · 5h old · seen in 4 sources HEATING ×2
- 2Web-based Jujutsu revset explorer & debuggerjuju.biLive Signal Community · 5h old · seen in 2 sources HEATING ×2
- 3Show HN: Pure PHP server 10x throughput vs NGINX+FPM now supports sockets, roomsgithub.comLive Signal Community · 12m old · via Show HN
- 4Show HN: An interactive game of British Columbiabigfootsbc.caLive Signal Community · 12m old · via Show HN
- 5Show HN: Superserve – Firecracker microVM sandboxes for long-running AI agentssuperserve.aiLive Signal Community · 18m old · via Show HN
- 6Bringing the modern web to the original iPad miniseg6.spaceLive Signal Community · 30m old · via Lobsters
- 7An Engineer's Guide to USB Type-C [pdf]ti.comLive Signal Community · 30m old · via Hacker News front
- 8Show HN: Curate links and turn them into a public website or email newslettercuratekit.comLive Signal Community · 30m old · via Show HN
- 9The Value of Domain Knowledge in Softwaregustavwengel.dkLive Signal Community · 42m old · via Lobsters
- 10Kimi K3 Is Competitive with Fable; Kimi K3 and Fable Is SoTAfireworks.aiLive Signal Community · 42m old · via Hacker News front
- 11Show HN: Atlas – Local Dependency Graphatlas-repo-wu76.vercel.appLive Signal Community · 1h old · via Show HN
- 12Show HN: Computable – Buy, sell, and redeem GPU for the exact weeks you wantgetcomputable.comLive Signal Community · 2h old · seen in 2 sources
- 13Show HN: Brookmd – streaming Markdown renderer in Rust (web, RN, Swift and more)github.comLive Signal Community · 2h old · via Show HN
- 14OpenAI Models Behind HuggingFace Cybersecurity Incidentlesswrong.comLive Signal Community · 2h old · via LessWrong
- 15
- 16Show HN: Faceblind – In-browser only video face blurringkmcheung12.github.ioLive Signal Community · 2h old · via Show HN
- 17Show HN: A platform for objective developer skill assessment (MVP)skillhacker.ioLive Signal Community · 2h old · via Show HN
- 18Gemini last models: temperature, top_p, and top_k are deprecated and ignoredai.google.devLive Signal Community · 2h old · via Hacker News front
- 19Show HN: Machinations – a multiplayer strategy game where LLM is the game mastermachinations.tpk.ggLive Signal Community · 2h old · via Show HN
- 20Show HN: StarSkew, a privacy-light Amazon review analyzer (starskew.com)starskew.comLive Signal Community · 2h old · via Show HN
- 21Show HN: I built a chat client that uses embeddings to cluster messages by topicllmtrail.comLive Signal Community · 2h old · via Show HN
- 22Show HN: RockCode – an unofficial macOS desktop client for the Grok CLIgithub.comLive Signal Community · 2h old · via Show HN
- 23"Drawing" the Mona Lisa with GPT-5.6, Claude, Gemini, and Groktryai.devLive Signal Community · 2h old · via Hacker News front
- 24WeirdChat: A catalog of unexpected AI behaviors, discovered automaticallylesswrong.comLive Signal Community · 2h old · via LessWrong
- 25A digestion of the Jacobian conjecture counterexampleterrytao.wordpress.comLive Signal Community · 2h old · via Hacker News front
- 26Show HN: RootBadger – a modern Usenet-style discussion platforrootbadger.comLive Signal Community · 2h old · via Show HN
- 27Show HN: Browser Tools SDK – an optimal browser harness for agentslibretto.shLive Signal Community · 2h old · via Show HN
- 28Show HN: Unified workspace where AI knows your businesszetadeck.comLive Signal Community · 2h old · via Show HN
- 29Show HN: Meltbox – where your agents send you briefsmeltbox.aiLive Signal Community · 2h old · via Show HN
- 30
- 31Show HN: Chalk: a Mac app for technical diagrams with a built-in MCP for Claudechalk.appkit.studioLive Signal Community · 3h old · via Show HN
- 32Your Agentic Workflow's Cache Keepalive Costs 8x Too Muchblog.mempko.comLive Signal Community · 3h old · via Lobsters
- 33Show HN: Dotflowy, the open source Workflowy alternative [video]youtube.comLive Signal Community · 3h old · via Show HN
- 34Show HN: Orate – On-device neural text-to-speech queue for Macorate.toLive Signal Community · 3h old · via Show HN
- 35Show HN: Claude Code built my ESP32 and fixed its UI by looking at a webcamgithub.comLive Signal Community · 3h old · via Show HN
- 36Show HN: Claude Bucks – a wallet for your AI agentgithub.comLive Signal Community · 3h old · via Show HN
- 37Show HN: Use your flight-SIM gear as a Codex Microgithub.comLive Signal Community · 3h old · via Show HN
- 38Show HN: TunD. Make friends' PCs appear on the same VLANgithub.comLive Signal Community · 3h old · via Show HN
- 39Show HN: SciStudio: organize chaos data analysis pipelines with workflow runtimescistudio.ioLive Signal Community · 3h old · via Show HN
- 40Show HN: MindCache – An open-source agentic memory system for LLMsgithub.comLive Signal Community · 3h old · via Show HN
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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