Claude Fable 5 missed a bug that Sonnet 4.6 caught
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??????? #fable
69 headlines
Claude Fable 5: Features, Pricing, and Fallbacks
Claude Fable 5: Features, Pricing, and Fallbacks Anthropic just shipped claude-fable-5 , its most capable widely released model. It is a Mythos class model made safe for general use, with a 1M token context window, adaptive thinking, and a safety classifier that quietly hands risky prompts to Cl...
Microsoft restricts Claude Fable for employees over data retention concerns
Anthropic released Claude Fable, its first Mythos-class AI model, yesterday and it's already causing concerns inside Microsoft. Sources tell me that Microsoft is limiting the use of Claude Fable 5 for employees because of Anthropic's new data retention requirements.
Cybersecurity researchers aren't happy about the guardrails on Anthropic's Fable
2 points, 2 comments on Hacker News
Anthropic's Fable 5 Is Opus on a Good Day
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Would Claude Fable's shadownerfing making an anticompetitive class action case
What the title suggests, I don't really feel like asking the models
Would Claude Fable's shadownerfing making an anticompetitive class action case?
What the title suggests, I don't really feel like asking the models
Fable will NOT help if it thinks your ML research/ML engineering is interesting
1 points, 1 comments on Hacker News
Cybersecurity researchers aren’t happy about the guardrails on Anthropic’s Fable
Cybersecurity researchers are complaining that Anthropic's new model Fable has guardrails that are too strict for any cybersecurity work.
Claude Fable 5 Launches at #1 on the Artificial Analysis Intelligence Index
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Fable flags "cancer" as a biosecurity risk
3 points, 1 comments on Hacker News
Claude Fable 5 Free Through June 22 on Pro, Max, Team, and Enterprise Plans
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Claude Fable 5 System prompt
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Show HN: Lanes now runs Claude Fable 5 across parallel agent sessions
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Asking Fable 5 to design a humanoid
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Ask HN: Do you think Fable is expensive?
2 points, 1 comments on Hacker News
I was feeling low, and Claude Fable cheered me up with this triptych build [video]
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Anthropic's Fable 5 Silent Sabotage Mode
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You're not even allowed to ask Fable about basic biology questions
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Claude Fable cheered me up by building this tryptich
1 points, 1 comments on Hacker News
Pelican on a Bicycle: Claude Fable 5 vs. GPT-5.5 Pro vs. Gemini 3.1 Pro
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Claude Fable 5 silently degrades its own performance on frontier AI work
1 points, 1 comments on Hacker News
Fable 5 is available in Zed
2 points, 2 comments on Hacker News
Claude Fable 5 Ultracode + AI medical diagnosis
1 points, 1 comments on Hacker News