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-mervin-praison-the-new-claude-opus-4-7-feature-develope/

# The New Claude Opus 4.7 Feature Developers Are Obsessed With

Mervin Praison, 2 May 2026, YouTube. 3,512 views as of 8 October 2026.
Kind: Community.
Watch: https://www.youtube.com/watch?v=8NgzPtBEzV0

## Why it is here

Found 2026-09-29 by YouTube search "introducing claude opus 4.7" (sorted by upload date). Listed as: 3,511 views, length 4:01, published "5mo ago" (so the date above is approximate).

## Description (written by Gemini from the video)

**Summary**  
In this video, presenter Mervin Praison reviews the release of Anthropic's Claude Opus 4.7, walking through its benchmark scores, features, and developer reactions. He details the model's new effort parameter levels, pricing, performance compared to earlier models and Claude Mythos Preview, and highlights developer features in Claude Code such as `/ultrareview` and auto mode.

**What is shown**  
- [00:00] Overview of the Claude Opus 4.7 announcement post (dated 16 Apr 2026) and initial benchmark comparison table against Opus 4.6, GPT-5.4, Gemini 3.1 Pro, and Mythos Preview.
- [00:10] Review of highlight points from the announcement: instruction following, high-resolution multimodal support (up to 2576 pixels on the long edge), real-world knowledge work, and file-system memory.
- [00:44] GDPVal-AA knowledge work Elo score comparison chart (Opus 4.7 leading at 1753).
- [00:48] "Agentic coding performance by effort level" graph, illustrating performance versus token usage across `low`, `medium`, `high`, `xhigh`, and `max` settings.
- [01:06] Anthropic Python SDK code snippet showing how to set the `output_config={"effort": "medium"}` parameter.
- [01:36] Benchmark table showing Claude Mythos Preview outperforming Opus 4.7 on agentic coding and reasoning benchmarks.
- [01:43] API pricing and availability details across Claude products, Amazon Bedrock, Google Cloud Vertex AI, and Microsoft Foundry.
- [01:54] Industry quotes and testimonials from Intuit and Augment Code.
- [02:19] Claude Code features explained: the `/ultrareview` command and the new `auto mode` security classifier system compared to `--dangerously-skip-permissions`.
- [02:54] 2D matrix diagram comparing task autonomy versus security/safety for manual prompts, bypass permissions, sandboxing, and auto mode.
- [03:08] Community discussions and charts on X (Twitter): Nathan Lambert on the new tokenizer/base model, MRCR v2 long-context benchmark degradation chart, Alex Albert's feature summary, and partner integrations/promotions on Cursor and Windsurf.

**Claims & numbers**  
- **Benchmarks & Scores**:
  - SWE-bench Pro: Opus 4.7 scores 64.3% vs. Opus 4.6 (53.4%), GPT-5.4 (57.7%), Gemini 3.1 Pro (54.2%), and Mythos Preview (77.8%).
  - SWE-bench Verified: Opus 4.7 scores 87.6% vs. Opus 4.6 (80.8%), Gemini 3.1 Pro (80.6%), and Mythos Preview (93.9%).
  - Terminal-Bench 2.0: Opus 4.7 scores 69.4% vs. Opus 4.6 (65.4%), GPT-5.4 (75.1% self-reported), Gemini 3.1 Pro (68.5%), and Mythos Preview (82.0%).
  - Humanity's Last Exam (with tools): Opus 4.7 scores 54.7% vs. Opus 4.6 (53.3%), GPT-5.4 (54.7%), Gemini 3.1 Pro (51.4%), and Mythos Preview (64.7%).
  - GDPVal-AA Elo score: Opus 4.7 achieves 1753 vs. Opus 4.6 (1619), GPT-5.4 (1674), and Gemini 3.1 Pro (1314).
  - MRCR v2 (8-needle @ 1M context): Opus 4.7 drops to 32.2% (with thinking/max) compared to Opus 4.6 at 78.3% (64k thinking).
- **Pricing & Parameters**:
  - Pricing is unchanged from Opus 4.6: $5 per million input tokens, $25 per million output tokens.
  - Image input support increased to 2,576 pixels on the long edge (~3.75 megapixels), more than 3x prior Claude models.
  - Five effort tiers are available for Opus 4.7: `low`, `medium`, `high`, `xhigh` (new), and `max`.
  - Context window: 1M tokens.

**Notable quotes**  
- [00:39] "I personally always use Claude Opus 4.6 for my coding purpose, but now we got 4.7."
- [01:01] "xhigh introduced only in Opus 4.7."
- [02:23] "The new `/ultrareview` slash command produces a dedicated review session that reads through changes and flags bugs and design issues..."

**Assessment**  
This is an independent community commentary and overview video reviewing Anthropic's official blog posts, documentation, benchmark charts, and developer community reactions on X. The presenter does not run original benchmark evaluations or live code execution in the video, relying entirely on published tables, promotional blog posts, and third-party announcements.

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

## 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/

## People in it

- [Nathan Lambert](https://postcutoff.com/person/nathan-lambert/), Co-founder and executive director, Trillium Labs; author of Interconnects