Claude Opus 4.7 Changes Claude Code

I tested Claude Opus 4.7 in Claude Code on a real feature build — adding email invoicing, Stripe payment links, and automated payment reminders to an accounting app I'm building. Opus 4.7 brought a big jump in coding benchmarks over 4.6, a new "extra high" effort mode, and the new Ultra Review command that caught a security bug in my code that would've cost me hundreds of dollars in production. 🚀 Host your own apps on a VPS with Hostinger: https://hostinger.com/aiunleashed Chapters: 00:00 — Intro 00:18 — The feature I'm building with Opus 4.7 00:52 — New "extra high" effort mode (and why it matters) 01:29 — Tokenizer update and what it means for your usage 01:46 — Planning mode interview changes 01:57 — The biggest change: instruction following 02:34 — Advisor feature in action 03:02 — Feature build results: email, Stripe, and reminders 03:47 — Higher resolution image support 04:11 — Ultra Review: the new code review command 04:24 — How Ultra Review works (and what it costs) 05:04 — The bug Ultra Review caught that would've cost me hundreds 05:40 — Final thoughts on Opus 4.7 and where Claude Code is headed