---
type: Article
title: "Claude Sonnet 5 Is the New Default, Priced Below Opus 4.8"
description: "Claude Sonnet 5 is Anthropic's new default Claude model: agentic, close to Opus 4.8 in capability, and priced well below it through August 31."
resource: "https://yippy.com/t/kn3y24x34ewv/"
locale: en
published: "2026-07-07T14:37:52.716Z"
timestamp: "2026-07-12T13:55:40.168Z"
tags:
  - "ai"
  - "anthropic"
  - "fable-5"
entities:
  - "https://www.anthropic.com"
  - "https://www.anthropic.com/news/claude-fable-5-mythos-5"
---

# Claude Sonnet 5 Is the New Default, Priced Below Opus 4.8

Claude Sonnet 5 launched June 30, 2026 as Anthropic's new default model, priced at 40 to 60 percent of the Opus 4.8 rate depending on the date.

**Contents**

- What changed with Sonnet 5
- Where it sits in the family
- The price gap, worked out
- The regular price is not a hike
- Why the window before August 31 matters
- Bottom line

Full text: https://yippy.com/t/kn3y24x34ewv/