System Card: Claude Opus 4.5 (Nov 2025)

Title: System Card: Claude Opus 4.5 (Nov 2025)
Date: November 2025
Authors: Anthropic Team
Link: https://assets.anthropic.com/m/64823ba7485345a7/Claude-Opus-4-5-System-Card.pdf
Chapters:
00:00 - Opus 4.5 System Card Overview
01:42 - Extended Thinking Parameter Explained
02:44 - Dominating Engineering Benchmarks
03:49 - Where Competitors Still Lead
04:44 - Tool Use and Sub-Agents
05:35 - Multi-Agent Orchestration Economics
06:35 - Discovery of Policy Loopholes
07:58 - Resisting Indirect Prompt Injection
09:27 - Internal Model Honesty Conflicts
11:20 - Evaluating Catastrophic AI Risks
13:20 - Summary of Capability vs Safety

Stock video credits:
- Engin Akyurt - https://www.pexels.com/@enginakyurt
- Pressmaster - https://www.pexels.com/@pressmaster
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- Danil Shostak - https://www.pexels.com/@danil-shostak-1324124
- Bedrijfsfilmspecialist.nl - https://www.pexels.com/@bedrijfsfilmspecialist-nl-1284006
- Pavel Danilyuk - https://www.pexels.com/@pavel-danilyuk
- José Alfredo Munguía Lira - https://www.pexels.com/@rectorretro
- Trippy Lagoon - https://www.pexels.com/@trippy-lagoon-511515544
- @svetjekolem - https://www.pexels.com/@svetjekolem
- Colors Motion Graphics - https://www.pexels.com/@colors-motion-graphics-183847699
- Kindel Media - https://www.pexels.com/@kindelmedia
- Silviu Din - https://www.pexels.com/@silviu-din-1620549
- Dan Cristian Pădureț - https://www.pexels.com/@paduret
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- KATRIN BOLOVTSOVA - https://www.pexels.com/@ekaterina-bolovtsova
- Kelly - https://www.pexels.com/@kelly
- crazy motions - https://www.pexels.com/@crazy-motions-80195021
- tunnel motions - https://www.pexels.com/@tunnelmotions

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