Anthropic Launches Claude Fable 5.2 and Mythos 5.2 with Dual Safeguard Levels
The company released the model with two distinct safety configurations, offering different pricing tiers and context window options for developers.
Headline and summary written by an AI model from the linked articles; not reviewed by a person. How this was made
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The odds
Each tick is a source publishing on this story
Price data
| Time | Chance of yes |
|---|---|
| now | 0% |
| 10 Nov, 15:43 UTC | 0% |
| 9 Nov, 15:43 UTC | 13% |
Replay the odds, article by article
Step through each article in the order it published and watch Will there be no next Fable model (5.2+) release by November 30, 2026? respond.
The story so far
2 publishers have covered this in 5 articles since 9 Nov 2026. Hacker News published first, on 9 November at 18:56 UTC; marktechpost.com followed 20h 03m later. The most recent article, from marktechpost.com, appeared on 10 November at 14:59 UTC.
Outlets reporting it: Hacker News, marktechpost.com.
3 prediction markets price this story:
- Will there be no next Fable model (5.2+) release by November 30, 2026? — resolved “No” on 10 Nov 2026.
- Will Claude Fable 5.2+ debut at an output token price of at least $60 by June 30, 2027? — resolved “No” on 10 Nov 2026.
- Will the next Fable model (5.2+) debut at a score of at least 1530 by June 30, 2027? — the market puts it at 20%, with $1k traded in the last 24 hours, closing 1 Jul 2027. The market resolves to Yes if a qualifying Fable model 5.2 or higher appears on the Arena.AI leaderboard and holds a score of at least 1530 at 12:00 PM ET on the day after it first shows up. The resolution relies solely on the specific Score column in the Text Arena | Overall tab, ignoring any AutoEval labels or unrounded data.
Odds are the market's probability that the outcome happens, updated every few minutes. They are information about what traders expect, not a forecast we make and not investment advice.
How it unfolded
Every source in the order it published, with the odds on Will there be no next Fable model (5.2+) release by November 30, 2026? at that moment. A dash means the source published before we started tracking prices.
- Hacker NewsClaude Fable 5.2 and Mythos 5.213%
- Hacker NewsClaude Fable 5.2 launch offers13%
- Hacker NewsNovember 2026 Claude Fable 5.2 Scores 65 on Artificial Analysis, Highest So Far13%
- Hacker NewsFable 5.2 one-shotted my nephew's dream game13%
- marktechpost.comAnthropic Launches Claude Fable 5.2 and Mythos 5.2: Same Model, Different Safeguards13%
- Market resolved: No
Sources
Every article we clustered into this story. Headlines link to the publisher.
- Anthropic Launches Claude Fable 5.2 and Mythos 5.2: Same Model, Different Safeguards marktechpost.com
- Fable 5.2 one-shotted my nephew's dream game Hacker News
- November 2026 Claude Fable 5.2 Scores 65 on Artificial Analysis, Highest So Far Hacker News
- Claude Fable 5.2 launch offers Hacker News
- Claude Fable 5.2 and Mythos 5.2 Hacker News
Related prediction markets
Linked by software because they are about the same subject. Most ask a different question from the one this story reports, so read each market's own question. How often the link is right
- Resolved Will there be no next Fable model (5.2+) release by November 30, 2026? No 2d ago
The market favoured No at 88% a day out, and it won. How often it's right
Wrong market?
- Resolved Will Claude Fable 5.2+ debut at an output token price of at least $60 by June 30, 2027? No 2d ago
The market favoured No at 96% a day out, and it won. How often it's right
Wrong market?
- Polymarket Will the next Fable model (5.2+) debut at a score of at least 1530 by June 30, 2027? 20% +2
Does the market have this right?
Wrong market?
Have your say
Your call. How does this end?
Free, no money involved. Calls are scored against the market's price when you make them, so backing an underdog that wins scores most. Leaderboard · Your calls
In this story
- Anthropic
- Claude Fable 5.2
- Claude Mythos 5.2