GPT-5.5 Returns to Cutting Edge in Coding, But OpenAI Switches Benchmarks After Losing to Opus 4.7

Beijing Issues Ban-Removal Requirement for Trading to Be Canceled! Meta’s $2.0 Billion Acquisition of China’s AI Startup Manus Fails

The China National Development and Reform Commission officially issued an announcement today (April 27), stating that the Office of the Work Mechanism for Foreign Investment Security Reviews, “in accordance with law and regulations, has made a decision to prohibit investment in the foreign investment acquisition of the Manus project and requires the party concerned to cancel the acquisition transaction.” This is among the few cases since China’s “Administrative Measures for Foreign Investment Security Reviews” took effect in which the highest-strength measures were used to impose a “prohibition on investment” and require the cancellation of an already completed transaction. Meta splashes $2 billion to buy the cheapest AI application Time goes back to December 29, 2025. Meta announced the acquisition of China’s AI agent startup Manus, and the market estimated the price would fall between $2 billion and $3 billion. Manus is a general-purpose AI developed by Beijing Butterfly Effect Technology Development, and after it launched on March 6, 2025, it became the talk of the industry overnight due to an outstanding performance in the GAIA benchmark

Xizhi Technology-P IPO Shares Surge Over 360% on Gray Market, Gains Narrow to 320%

Gate News message, April 27 — Xizhi Technology-P (01879.HK), a Hong Kong-listed AI chip company, saw its shares surge over 360% on the gray market (dark market) earlier today, though gains have since narrowed to 320%. The stock is trading ahead of its official Hong Kong IPO

Should AI boost productivity or lower costs? A tenfold efficiency increase hasn’t turned into a tenfold revenue jump, but in Silicon Valley, nobody dares to call it off

Five Yuan Capital partner Meng Xing has recently published a Silicon Valley inspection report, proposing a judgment that has even changed his own note-taking habit: Silicon Valley is entering a stage where even people who can “ride waves” are drowned by the waves. The iteration speed of AI has shifted from “monthly” to “weekly”—even Silicon Valley itself can’t keep up with its own pace. When AI amplifies a team’s productivity by five times, you can reduce 80% of the workforce to maintain the same output, or keep headcount and do five times the work. Meng Xing’s observations this time in Silicon Valley are essentially the first draft of the answer given on the ground: when 100x efficiency doesn’t translate into 100x revenue, when token budgets are edging toward human labor costs, and when the steam engine can’t outpace the horse carriage but no one dares to stop, Silicon Valley is choosing to “push speed up first and figure things out later.” But in the end, this path will lead to “expanding capability” or “compressing costs”—there’s currently no conclusion. YC has gone from leading indicators to lagging indicators Meng Xing this year

YC partners share how to use AI to build a company from scratch; startups should treat AI as an operating system rather than a tool

The impact of AI on startups is no longer limited to helping engineers write code faster, automating customer service workflows, or adding a Copilot to an existing product. Recently, YC partner Diana pointed out that the real change lies in the fact that AI is rewriting how a company should be built from scratch in the first place. For early founders, AI should not be merely an efficiency tool the company occasionally uses; it should be designed from day one as the operating system of the entire company. The productivity perspective is outdated—AI is rewriting a company’s design starting point Diana believes that when people in the market talk about AI today, they still too often stay within a “productivity improvement” framework—for example, engineers can write code faster, teams can automate more processes, and companies can roll out more features. But this argument actually underestimates the structural changes AI brings. She points out that the right people paired with AI…

Cursor AI agent caused an incident! One line of code cleared the company database in 9 seconds—“security checks” turned into empty talk

PocketOS founder Jer Crane said that Cursor AI agents ran maintenance on their own in a test environment, misused an API Token that adds/removes custom domains, and launched a delete command against Railway’s GraphQL API. Within 9 seconds, all data and same-region snapshots were completely destroyed, with the latest recoverable point being three months ago. The agent admitted to violating rules for irreversible operations, not reading technical documentation, not verifying environment isolation, and more. The victims were car rental industry customers; their bookings and all data disappeared, and reconciling accounts took a long time. Crane proposed five reforms: manual confirmation, fine-grained API permissions, backups separated from master data, a public SLA, and a mandatory underlying enforcement mechanism.