---
title: "The internet has one message for Opus 5. Shut up"
description: "5 source-backed AI claims from The internet has one message for Opus 5. Shut up, with key statistics, context, and the original AI Adopters Club source."
url: "https://kbanc.com/claims-library/the-internet-has-one-message-for-opus-5-shut-up"
source: "https://aiadopters.club/p/fix-opus-5-verbosity"
date: "2026-08-06"
topics: ["tools", "implementation", "strategy"]
generated: "2026-09-19"
---

# The internet has one message for Opus 5. Shut up

By Kamil Banc | August 6, 2026

## Claims

1. **System Prompt Reduction**: Anthropic removed over 80 percent of Claude Code's system prompt without hurting coding benchmark performance.
2. **Reddit's New Slang**: Reddit users coined terms like Claudeslop and Benchslop to describe Opus 5's verbose responses.
3. **Contradictory Rules Waste Effort**: Contradictory rules in old system prompts caused the model to waste effort resolving conflicts.
4. **Output Styles Feature**: Claude Code's output styles feature lets users set a persistent voice for entire sessions.
5. **No-Slop Template**: The no-slop output style template removes AI filler phrases and enforces direct engineer-style writing.

## Evidence

### Quote
> "The model is not wrong more often. It is just exhausting to decode." - Kamil Banc

### Key Statistics
- **80%+**: Percentage of Claude Code's system prompt Anthropic removed with no measurable drop in coding evaluations.
- **6**: Number of custom output style templates the author built for different conversational scenarios.
- **2 minutes**: Estimated time required to set up a custom output style to control Opus 5's verbosity.

## Context
The analysis draws on Anthropic's own internal disclosure from a Claude Code team member explaining why system prompt rules were stripped, alongside crowdsourced reactions from Reddit threads and reviews documenting user frustration with Opus 5's verbosity. Practitioners can apply this by creating markdown-based output style files, such as the 'no-slop' template, and loading them once per session via Claude Code's /output-style command. This approach shifts control of tone and verbosity from Anthropic's default settings to the end user, requiring only a few minutes of setup. The method is particularly relevant for coding-focused workflows where contradictory legacy instructions previously caused inefficient, self-conflicting model behavior. However, the fix currently applies primarily to Claude Code environments rather than general chat interfaces, leaving open questions about broader applicability.

## Source
- Original: [The internet has one message for Opus 5. Shut up](https://aiadopters.club/p/fix-opus-5-verbosity)
- Cite: kbanc.com/claims-library/the-internet-has-one-message-for-opus-5-shut-up