As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/v/yt-chris-verzwyvelt-claude-opus-4-7-explained-and-tested-liv/

# Claude Opus 4.7 Explained and Tested Live

Chris Verzwyvelt, 2 May 2026, YouTube. 4,654 views as of 8 October 2026.
Kind: Review.
Watch: https://www.youtube.com/watch?v=kVc5Y0WfAmw

## Why it is here

Found 2026-09-29 by YouTube search "introducing claude opus 4.7" (sorted by upload date). Listed as: 4,645 views, length 8:13, published "5mo ago" (so the date above is approximate).

## Description (written by Gemini from the video)

**Summary**  
In this video, creator Chris Verzwyvelt reviews the launch announcement and benchmark figures for Anthropic's Claude Opus 4.7 before testing the model live. He examines its comparative benchmark performance against Opus 4.6, GPT-5.4, and Gemini 3.1 Pro, and then demonstrates its new "ultra review" and coding capabilities inside Claude Code to debug and upgrade an existing project called "YouTube Scout."

**What is shown**  
* **[00:00]** Anthropic's official announcement post on X detailing the release of Claude Opus 4.7.  
* **[00:32]** Breakdown of the official benchmark chart comparing Opus 4.7 against Opus 4.6, GPT-5.4, Gemini 3.1 Pro, and Mythos Preview.  
* **[02:21]** Review of announcement release notes highlighting 3x vision resolution, new API effort levels/task budgets, and Claude Code’s new `ultra review` command.  
* **[03:20]** Claude web interface and desktop app featuring Claude Opus 4.7 selected in Claude Code.  
* **[04:27]** Entering the command `ultra review my YouTube Scout and see how to make it better` targeting his local Python repository.  
* **[05:05]** Claude Code running an automated code review session in the terminal, reading files and requesting execution permissions.  
* **[06:19]** Claude Code presenting and applying a list of 10 bug fixes and architectural recommendations.  
* **[06:40]** Executing the updated script directly in the terminal, querying YouTube for "Claude AI" videos and fetching 79 entries.  
* **[07:22]** Display of the newly generated dashboard UI showing video thumbnails, channel metrics, performance scores, and functional video links.

**Claims & numbers**  
* The presenter notes the launch announcement occurred less than 10 minutes prior to recording (around 9:42 AM Central Time).  
* According to the presented benchmark chart, on agentic coding, Opus 4.7 scores 64.3%, compared to Opus 4.6 at 53.4%, GPT-5.4 at 57.7%, Gemini 3.1 Pro at 54.2%, and Mythos Preview at 77.8%.  
* On SWE-bench Verified, Opus 4.7 reaches 87.4% compared to 80.4% for Opus 4.6.  
* On cybersecurity vulnerabilities, Mythos scored 83%, Opus 4.7 scored 73.1%, and Opus 4.6 scored 77.3%.  
* On graduate-level reasoning, Opus 4.7 achieved 94.2%, trailing GPT-5.4 (94.4%) by 0.2%.  
* On visual reasoning, Opus 4.7 scored 82.1% versus 69.1% for Opus 4.6.  
* The presenter highlights that GPT-5.4 scored higher than Opus 4.7 on scaled tool use.  
* Anthropic claims Opus 4.7 processes images at over 3x the previous resolution.  
* The presenter claims Claude Code resolved 10 bugs and completed the full review in under 10 minutes.

**Notable quotes**  
* **[00:00]** *"Opus 4.7 is officially here. No more leaks, the official announcement, and it is out and ready to use."*  
* **[02:30]** *"This is a substantially better vision, and it can see images at more than three times the resolution and produce higher-quality interfaces, slides, and docs as a result."*  
* **[06:19]** *"So in less than 10 minutes, it approved 10 different fixes to my system that I created."*

**Assessment**  
This is a genuine third-party launch reaction and live workflow demo evaluating Claude Opus 4.7 and Claude Code. The creator demonstrates actual terminal execution, code refactoring, and UI rendering on an existing tool with realistic iteration times and without misleading edits.

_Described by gemini-3.8-flash on 2026-09-29 from the video's audio and frames._

## How AI was used to make it

AI made a small part of this video (Subject built by AI).
- Claude Code refactored repository code and generated a YouTube dashboard UI
Tools: Claude Opus 4.7, Claude Code
(Classified by gemini-3.8-flash from our description; high confidence. Overview: https://postcutoff.com/ai-video/)

## Related

- 2026-04-16: [Anthropic releases Claude Opus 4.7, admits it trails the unreleased Mythos Preview](https://postcutoff.com/e/2026-04-16-claude-opus-4-7/)

## More videos on this

- 2026-05-02: [Claude Opus 4.7 - A New Frontier, in Performance … and Drama](https://postcutoff.com/v/yt-ai-explained-claude-opus-4-7-a-new-frontier-in-perfor/), AI Explained, YouTube, community, 89,507 views as of 9 October 2026.
- 2026-05-02: [Claude Opus 4.7 Just Dropped... Or Did It Really?](https://postcutoff.com/v/yt-nate-herk-ai-automat-claude-opus-4-7-just-dropped-or-did-it-r/), Nate Herk | AI Automation, YouTube, community, 88,103 views as of 8 October 2026.
- 2026-05-02: [The New Claude Opus 4.7 Can Actually Do This Now](https://postcutoff.com/v/yt-skill-leap-ai-the-new-claude-opus-4-7-can-actually-do/), Skill Leap AI, YouTube, community, 77,461 views as of 7 October 2026.
- 2026-05-02: [Is Claude Opus 4.7 Dumb?](https://postcutoff.com/v/yt-space-kangaroo-is-claude-opus-4-7-dumb/), Space Kangaroo, YouTube, community, 22,323 views as of 8 October 2026.

What else happened that month, day by day: https://postcutoff.com/timeline/2026/04/