AI Summarized Hacker News

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I rewrote PostHog's SQL parser, 70x faster, while barely looking at the code

PostHog rebuilt its SQL parser to dramatically speed up transpiling SQL to ClickHouse. They replaced the ANTLR-based parser with a hand-written recursive-descent Rust parser (Pratt core) developed via AI (Claude) sessions, aiming to match the old parser for real queries. They used property-based testing and a generated SQL corpus, plus prompt engineering, to surface and fix divergences. After shadow testing across millions of parses with zero divergences, production traffic was switched to the new parser, delivering about 70x faster on laptop benchmarks and ~454x faster on production queries.

Big AI labs are hiring philosophers

Could not summarize article.

Thomann takes legal action against Fender

Thomann Cyberstore is experiencing a server outage (“unplugged session”); users are asked to retry later, with a 504 Gateway Timeout message.

Journalism is rearranging the deckchairs. It needs to reinvent itself

Journalism is in crisis and tinkering with AI, comments, or business models won’t fix it. The core issue is redefining why journalism exists and its value to audiences. Shirish Kulkarni’s Wales listening project shows audiences are discerning and want practical, trustworthy information that helps them decide for themselves and their communities. Newsrooms focus on audience strategies rather than community relationships; the internet is a conversation. Under commercial pressure they chase short-term wins with AI vendors and platforms. The author predicts new, community‑oriented newsrooms will emerge.

Pull request limits are cutting down the noise

GitHub is introducing persistent pull request limits to reduce noise and backlog in repositories. The limit caps open PRs for users without write access; drafts don’t count, and PRs from Copilot/AI do. Trusted contributors can be bypassed. Upcoming features include archiving PRs, per-repo issue limits, smarter bypass signals, and cross-repo controls. The change comes as monthly PRs have grown from ~25 million in 2023 to ~90 million now. Try the option in repository settings and share feedback.

Computer use in Gemini 3.5 Flash

Google DeepMind announces that computer use is now a built-in capability in Gemini 3.5 Flash, integrated into the main model (not just Gemini 2.5). It lets agents see, reason, and act across browser, mobile, and desktop, enabling better long-horizon and enterprise automation such as software testing and knowledge work. Access via the Gemini API and Gemini Enterprise Agent Platform. 3.5 Flash analyzes the app to categorize features and audits for accessibility. Safety measures include adversarial training and optional safeguards: explicit user confirmation and automatic stop for indirect prompt injections, plus defense-in-depth with sandboxing.

NSA lost access to Mythos amid Anthropic dispute

Could not summarize article.

OpenAI unveils its first custom chip, built by Broadcom

OpenAI unveiled its first custom chip, Jalapeño, built with Broadcom for inference workloads. The processor, designed with OpenAI’s model guidance, aims to deliver significantly better performance-per-watt than current GPUs and lower real-time inference costs. Training will likely continue on Nvidia hardware for now. This marks OpenAI’s move to design infrastructure across the stack—chip architecture, memory, scheduling, and deployment—to accelerate and reduce the cost of its models, echoing the industry shift toward dedicated AI accelerators.

Ubisoft co-founder Claude Guillemot dies in plane crash

Claude Guillemot, Ubisoft co-founder, died in a plane crash in La Baule, France, at age 69. He helped launch Ubisoft in 1986 with his brothers; the company has published Assassin’s Creed, Far Cry, Prince of Persia, and Tom Clancy titles. The Guillemot family retains control of Ubisoft, with Yves Guillemot as CEO; Claude also chaired Guillemot Corp. Ubisoft said it was saddened by his death.

Show HN: peerd – AI agent harness that runs entirely in your browser

peerd is the first AI agent harness native to the browser: a Chrome/Firefox extension that runs the agent loop in the browser, driving tabs, spawning sandboxed compute (JS notebooks, WASM Linux VMs, client-side apps) and sharing builds peer-to-peer via WebRTC. BYOK, no backend, no telemetry. It relies on the browser for runtime, security, and isolation; the agent’s keys stay in a local vault and actions are verified against live pages. Two channels: peerd (store) and peerd-preview (dweb). Install via unpacked extension and configure API keys (Anthropic/OpenRouter). Experimental 0.x; surface may change.

The Xteink X4 E-Ink Reader

Max Glenister reviews the Xteink X4 E-Ink Reader (£40). It’s pocket-sized and light with a crisp 480x800 display and a included 16GB microSD. Out of the box the stock firmware is minimal and Chinese; English is easy to enable. A MagSafe-style mount works but polarity can be odd. The real value comes with custom firmware: CrossPoint (OTA) and Inx transform it into a capable reader with KOReader sync, OPDS, more formats, per-book settings, and strong typography. Compared with Android readers, X4 wins on portability and price.

I taught a bucket to speak Git

An experiment shows you can run a git server directly against object storage by teaching a bucket to act like a filesystem. Using billy (Go FS) and go-git, the author built objgit, a single-binary git server backed by Tigris object storage with no disk or /usr/bin/git. Git objects are content-addressed; refs are tiny files. The post covers challenges—mass stat() calls, packfile reads, and ListObjectsV2 cache inefficiencies—and fixes: streaming packs, local pack caching, ranged GetObject, and a chroot-aware cache. It also adds post-receive hooks via a sandbox. Future plans include CI and a web UI.

For Most of the World, Open-Source AI Is the Only Way Forward

At UN Open Source Week, Yann LeCun argues open‑source AI is the only viable path to global AI sovereignty, diversity, and safety. Proprietary models are too costly and centralized. He promotes federated, open platforms (e.g., Project Tapestry) where nations contribute by exchanging parameter vectors rather than data, enabling local, multilingual AI. Delegates from Morocco, Sierra Leone, and Jamaica joined the call. With government support, open AI could outpace proprietary systems by 2027, lowering costs and expanding access—especially in the Global South—through transparency and pluralism.

CAPTCHAs have failed for 20 years

The article traces CAPTCHA evolution from distorted text to image tasks to browser-based risk scoring, arguing that the future is identity, not tests. As agents run real workflows, defenses assess who the browser is via signals like fingerprints, fonts, canvas/WebGL, TLS, history, and behavior, rather than repeatedly challenging them. Attackers pivot to fingerprinting to appear legitimate. Browserbase promotes Web Bot Auth—cryptographic agent identity—so automation can be trusted without solving CAPTCHAs, in partnership with Cloudflare.

Systems optimization should be part of CI/CD

LEVI is an LLM-based evolutionary framework that reduces ADRS cost by harness-first design: most mutations are done by small, cheap models (e.g., QWEN 30B) while larger models are reserved for paradigm shifts. It combines stratified model allocation with improved diversity across both code structure and behavior, stored in a CVT-MAP-Elites archive to prevent convergence. LEVI delivers state-of-the-art ADRS performance at 3–7× lower cost (often $4–$15 per problem) and outperforms OpenEvolve and GEPA on benchmarks; lessons stress code over text, more cheap evaluations, and nightly re-optimization for bespoke deployments.

Venezuela reveals $240B in debt it cannot pay (~$100B more than expected)

Venezuela's interim government under Delcy Rodríguez plans to acknowledge about $240 billion in sovereign and PDVSA debt, far above market estimates, setting the stage for the largest debt restructuring in history. Rodríguez seeks a deal with creditors by year-end to regain access to international markets, with Centerview Partners advising. The economy is now about $100B, down from $370B in 2012, and IMF involvement is non-signatory though technical contacts are ongoing. Debt includes government and PDVSA bonds around $60B plus $40B interest, plus claims to oil firms, suppliers, and loans from China and Russia. Analysts doubt a 2026 deal; many expect 2027.

OpenAI and Broadcom unveil LLM-optimized inference chip

Could not summarize article.

PR spam today looks like email spam in the early 2000s

Rahul Bathija analyzes PR data for openclaw/openclaw, noting a surge from two PRs/week to ~3,400/week and a drop in merge rate from ~48% to <9.3%. Many were AI-generated, including mass submissions. The article argues sender reputation and filters (e.g., Vouch) will become essential, and that diversity of thought matters: PRs requiring deep understanding survive more than simple feature additions. It also highlights duplicates: several contributors submitting identical feature PRs and multiple fixes for the same bug. The author concludes open source will need stronger identity, reputation, and contribution validation as speed increases.

Genuinely, my all-time favourite image: Mamenchisaurus hochuanensis

Mike Taylor shares his all-time favourite image: a stitched, high-resolution, head-to-tail sequence of the Mamenchisaurus hochuanensis neck from the 2017 Dinosaurs Of China exhibition at Wollaton Hall. SV-POW! attendees visited the show; Matt photographed the sequence; Jarrod Davis used visual-effects stitching to assemble it into a long, scrollable image (3171 x 7931). View full-size in fullscreen. The image is for a paper Taylor is working on and will be printed extra-large for his office. doi:10.59350/b6svd-p5w82. Thanks to Jarrod and Matt.

Boffin claims Microsoft's "quantum leap" is invalid due to "basic Python errors"

Nature published a peer-reviewed critique by Dr Henry Legg challenging Microsoft's quantum breakthrough claims around Majorana. Legg argues the 2025 paper is flawed, citing basic Python errors and omitted raw data that, he says, undermine evidence for a topological quantum phase transition and a workable qubit. He points to a hardcoded plotting filter and an array-index-based error that could hide multiple viable regions. Legg contends the team cherry-picked results to fit their thesis. Microsoft disputes the critique, defending their results and roadmap, while noting Majorana 2 is not proven or available as a qubit. The debate persists.

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