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YC News

From new batch announcements to alumni raising major rounds, Y Combinator remains a bellwether for early-stage tech. This section collects news involving the accelerator, the startups that pass through it, and the ideas and trends its community is betting on.

Stories here range from changes to the program itself, its deal terms, batch sizes, and leadership, to the successes and stumbles of companies it funded years ago. Batch composition gets particular attention, since the categories founders cluster around tend to foreshadow broader trends.

For anyone working in or around startups, following this accelerator is an efficient habit: it condenses signals about talent, ideas, and capital into one observable community. Founders weighing an application also use this coverage to understand what the program has become.

How do you keep Web MIDI from crashing a 1983 synthesizer?
2026-06-28

Sending Web MIDI data to vintage synthesizers often crashes the classic hardware because fast transfers overwhelm their slow processors and strict 31.25k baud limits, a problem worsened by cheap USB cables. To prevent this, developers must implement deliberate sender pacing, software flow control, and custom JavaScript parsing to properly manage the SysEx communication.

Show HN: DRM-Free Books
2026-06-28

A Hacker News discussion highlights various platforms for purchasing DRM-free ebooks, including Bookshop.org, ebooks.com, and Standard Ebooks. Users share tips on filtering for these unrestricted formats and note the editorial adjustments made by services like Standard Ebooks to modernize classic texts. Additionally, commenters explore the broader cultural impact of copyright expiration, observing how public domain works have historically increased the accessibility and popularity of traditional literature.

Anonymous GitHub account mass-dropping undisclosed 0-days
2026-06-27

An anonymous GitHub account has published an archive of undisclosed zero-day exploits, encouraging the community to responsibly report the flaws for CVE credit. The creator stated that this mass release of proof-of-concept code and vulnerability research is intended to attract new talent into the cybersecurity field without enabling malicious abuse.

OpenRA
2026-06-27

The open-source project OpenRA focuses on recreating and modernizing classic real-time strategy games. This effort allows fans to play updated versions of legendary titles like Red Alert, Command & Conquer, and Dune 2000.

DSpark: Speculative decoding accelerates LLM inference [pdf]
2026-06-27

DeepSeek continues to lead the AI research community by publishing detailed papers on accelerating large language model inference through speculative decoding and multi-token prediction. While other labs like Google are also developing these architectures, developers emphasize that bundling the speculative draft models directly with the main model significantly streamlines deployment. This integrated approach reduces layer duplication and allows tools like llama.cpp to achieve much higher token generation speeds.

Why does kinetic energy increase quadratically, not linearly, with speed? (2011)
2026-06-27

This 2011 physics discussion explores the fundamental reasons why an object's kinetic energy increases quadratically rather than linearly with speed. The thread examines the mathematical derivation of the classic kinetic energy formula to clarify the underlying mechanics of motion and energy transfer.

Fintech Engineering Handbook
2026-06-27

Readers are heavily critiquing a newly published Fintech Engineering Handbook, arguing that its guidance on handling monetary data is overly simplistic and sometimes fundamentally flawed. The resulting discussion centers on a debate over whether software should strictly use integers to prevent floating-point errors in financial transactions, or if floating-point numbers are acceptable for complex analytical calculations like options pricing. Commenters ultimately conclude that the correct engineering approach depends heavily on the specific fintech domain, noting that custodial systems require extreme precision while risk-metric systems can safely rely on floats.

The case for physical media ownership
2026-06-27

As streaming platforms increasingly shut down and remove content, the limitations of digital licenses are threatening consumers' long-term access to their media libraries. In response, the article makes a compelling case for returning to physical media ownership to guarantee permanent access to digital entertainment.

U.S. allows Anthropic to release Mythos AI to ‘trusted’ US organizations
2026-06-27

The U.S. government has permitted Anthropic to release the Mythos AI model exclusively to trusted U.S. organizations. This clearance arrives on the same day as a simultaneous limited release of a new model from rival AI developer OpenAI.

Suspicious Discontinuities (2020)
2026-06-27

Reader discussions surrounding a piece on suspicious statistical discontinuities highlight how arbitrary thresholds in sports, taxation, and social systems create perverse behavioral incentives. Commenters share examples ranging from marathon runners gaming target times to individuals and businesses suffering massive financial penalties just over a critical cutoff line. Ultimately, these rigid boundaries often force irrational decisions and trap people in detrimental situations as they attempt to navigate poorly designed systems.

Turn your site into a place people can bump into each other
2026-06-27

Town Square has released a new tool designed to help website owners transform their sites into interactive social spaces. The feature aims to bring back the organic feeling of bumping into real people while browsing, making digital platforms feel more alive and connected.

AI learns the “dark art” of RFIC design
2026-06-27

Artificial intelligence is drastically reducing the development timelines for radio frequency integrated circuits. By using reinforcement learning and diffusion models, the technology generates highly efficient and unconventional circuit layouts. This breakthrough is expected to supercharge the advancement of next-generation applications like 5G networks and radar systems.

Zuckerberg's war on whistleblowers
2026-06-27

Discussions surrounding Mark Zuckerberg's war on whistleblowers suggest his aggressive tactics are driven by narcissism and a desire to assert dominance rather than strategic calculation. Commentators argue his retaliatory behavior, mirroring his tendency to cheat at board games, serves as a deliberate loyalty test to weed out dissenters. Ultimately, his treatment of critics is viewed as a manifestation of his entitlement and a demand for absolute sycophancy from his inner circle.

Reducing tick density along recreational trails in Ottawa, Canada
2026-06-27

A recent report on reducing tick density along Ottawa's recreational trails has prompted community discussions on effective personal and environmental tick-control strategies. Readers highly recommend treating clothing, gear, and vehicle interiors with permethrin, alongside utilizing permethrin-soaked tick tubes and employing biological controls like chickens or natural predators.

Post-Mythos Cybersecurity: Keep calm and carry on
2026-06-27

As fears and uncertainties regarding Mythos become more tangible, the author advises cybersecurity professionals to remain calm and stick to their established routines. Rather than overhauling their strategies, organizations are encouraged to rely on the foundational security practices they have successfully utilized for years.

Asian AI startups launch Mythos-like models
2026-06-27

Asian AI startups are launching new models with Mythos-like capabilities that bypass the threat of US export bans. As a result, American AI labs risk permanently losing their foothold in the massive Asian market to these unrestricted domestic alternatives.

Om
2026-06-27

This reflective piece explores the tragic irony of a beloved individual whose generous personality stood in stark contrast to his severe physical heart condition. It honors his legacy by highlighting the profound and heartbreaking difference between his beautiful figurative heart and his failing literal one.

Linux on Older Hardware: The Complete Revival Guide
2026-06-27

A new guide details how to successfully revive aging PCs using Linux in 2026 by leveraging lightweight distributions and targeted system optimizations. The author tested zram tuning, SSD upgrades, and browser tweaks on a 2014 ThinkPad to reveal the most effective methods for maximizing performance on older hardware.

Long Wave radio era set to end with switch-off
2026-06-27

The BBC is shutting down its Long Wave radio service due to financial constraints, ending a highly reliable broadcast network that provided uninterrupted coverage across Europe. The closure has sparked widespread nostalgia among listeners who relied on the analog signal for iconic programming like the Shipping Forecast and Test Match Special. Many mourn the loss of the accessible technology, which also served as a foundational electronics project for generations of hobbyists.

WordStar: A Writer's Word Processor (1996)
2026-06-27

Bestselling author Robert J. Sawyer reflects on his long-time use of the classic WordStar word processing software in a recent retrospective piece. The article explores how the pioneering early program influenced his prolific writing career and helped him draft dozens of popular science fiction novels.