Everyday AI Podcast – An AI and ChatGPT Podcast
Everyday AI Podcast – An AI and ChatGPT Podcast

Ep 796: New Claude Fable 5 and Mythos 5: Anthropic's Boldest, Riskiest Launch

June 11, 2026

AI Summary

5 min read

Anthropic’s Claude Fable 5 and Mythos 5: Capability Leap With Unprecedented Restrictions

Anthropic shipped the most powerful public Claude model yet—Fable 5, from the new Mythos family—alongside the full Mythos 5 for select partners. Stripe used the family of models to migrate a 50-million-line codebase in a single day, work that would normally take a team roughly two months. But the launch comes with four new bottlenecks that no frontier model has imposed before: gated access, invisible downgrades, mandatory data retention, and subscription access ending in under three weeks.

What the Models Actually Do

Fable 5 is the public-facing version of Mythos 5, with additional guardrails. Mythos 5 itself is available only through Anthropic’s Project Glasswing, an invitation-only trusted access program. Both models are priced at $10 per million input tokens and $50 per million output tokens—more than double the cost of Opus 4.8, and roughly in line with OpenAI’s GPT-5.5 Pro, the most expensive model on the market.

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What you'll learn

  • 1 (00:16) **Model Launch Overview** - Anthropic releases Claude Fable 5 from the Mythos family as the most powerful public model yet
  • 2 (02:00) **Fable 5 vs Mythos 5 Distinction** - Fable 5 is the public version with added guardrails while Mythos 5 is reserved for elite invited partners
  • 3 (08:54) **Model Tier Hierarchy** - New Mythos family sits above previous Opus tier in capability
  • 4 (10:28) **Pricing and Subscription Access** - Fable 5 included in paid plans only until June 22nd
  • 5 (15:45) **Mandatory Data Retention Policy** - First frontier model requiring 30-day retention of all inputs and outputs
  • 6 (21:32) **Benchmark Presentation Concerns** - Anthropic combined Fable 5 and Mythos 5 results in shared columns
  • 7 (23:45) **Capability Strengths Demonstrated** - Excels at long complex tasks, coding, and creative single artifacts

+ Full timestamped outline available in the app

Show Notes

Anthropic's new Claude Fable 5 is both the best model in the world and potentially one of the most dangerous. 😳

The best coding model on the planet. 

Viral abilities to create 3D worlds and interactive environments. 

But the real question is: should you use it. 

Because as capable as Anthropic's new model is, the amount of hidden downsides might be enough for any enterprise to say no. 

Join us LIVE to learn more. 

New Claude Fable 5 and Mythos 5: Anthropic's Boldest, Riskiest Launch -- An Everyday AI Chat with Jordan Wilson


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Topics Covered in This Episode:

  1. Claude Fable 5 and Mythos 5 Overview
  2. Stripe's Code Migration with Claude Fable 5
  3. Fable 5 Capabilities vs. Opus 4.8
  4. Claude Fable 5 Access Restriction Timeline
  5. Four Major Drawbacks of Fable 5
  6. Benchmark Comparisons: Fable 5 vs. GPT-5.5
  7. Usage Limits and Downgrades in Fable 5
  8. Anthropic's New Data Retention Policy
  9. Instruction Following and Long Context Performance
  10. Fable 5's Coding and 3D Simulation Abilities
  11. Subscription vs. API Pricing Models
  12. Anthropic's Enterprise Targeting and IPO Strategy




Timestamps:

00:00 Anthropic's powerful new AI release

03:21 Introducing the Fable model drawbacks

07:22 Discussing user habits with Fable

12:35 Using Fable five before June 22

14:51 New data handling policies

19:08 Discord data breach concerns

21:52 Agentic capabilities and pricing tiers

25:35 Comparing AI model performance

27:13 Issues with model instruction following

32:14 Evaluating AI investment value

33:18 Discussing language model efficiency

38:57 Downsides of using Fable AI

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