Days before Apple's WWDC, Google says Chrome is faster than ever on the M5 MacBook Pro

Google has published two new browser benchmark scores for Chrome, both records, both run on Apple hardware, and both dropped four days before WWDC. Read into that what you will.The Chromium team's June 4 post puts Chrome's Speedometer 3.1 score at 61 on an M5 MacBook Pro running macOS 26.0.1—a 5% bump over the same test on an M4 MacBook Pro last year. JetStream 3, the newer JavaScript and WebAssembly benchmark announced in March, came in at 469. That's a 10% jump from the start of 2026.Speedometer measures how a browser handles real web app work: HTML parsing, JavaScript and JSON, DOM manipulation, CSS layout, font shaping, pixel rendering. JetStream goes heavier, stressing the kind of code that powers AI features and crypto in modern web apps. Both were built jointly by engineers from Apple, Google, and Mozilla, which is why these scores get cited as something more than vendor marketing.Google's writeup credits three buckets. V8, the JavaScript engine, got inlined fast paths for common operations and better handling of async work like microtask dispatch. WebAssembly saw cheaper function calls from JavaScript and tighter memory use in the compiler. Blink, the rendering engine, picked up smarter CSS caching, faster string copying, and—here's the interesting bit—specific optimisations for Apple Advanced Typography font shaping.Apple's developer conference begins June 8, with the keynote almost guaranteed to touch on Safari. A Chromium post highlighting Apple-tuned font code, run on an M5 Mac, four days out from that keynote, reads like a setup.For users, the gains are real but incremental—pages load a touch quicker, web apps feel slightly snappier. Synthetic scores never quite map to lived experience. But Chrome on the Mac is faster than it was a year ago, and Google clearly wanted that on record before Tim Cook took the stage.