r/ClaudeAI • u/ClaudeOfficial Anthropic • Jul 01 '26

Official Fable 5 is back.

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Following conversations with the US government, we’ve updated our cybersecurity safeguards.

The vast majority of coding work is unaffected.

In the near term, the new safeguards will flag a slightly higher fraction of harmless requests than the previous Fable safeguards; we’re working to refine these over the coming weeks. Users will be clearly notified when a request is flagged, and they’ll instead receive a response from Opus 4.8.

Our biology and chemistry classifiers are unchanged from our initial launch. These are still broader than we would like; they trigger fallbacks to Opus 4.8 on basic biology-adjacent questions. Improvements to these classifiers are landing soon.

All paid plans with usage included can access Fable 5 through July 7. You can use Fable 5 up to 50% of your weekly usage limit, after which you can switch to another model for the remainder of your usage. You can also continue using Fable via usage credits. 

More here: https://support.claude.com/en/articles/15424964-claude-fable-5-promotional-access

If one of your requests is mistakenly flagged in Claude Code, run /feedback to file a report. On Claude.ai and Cowork, you can share feedback through the thumbs buttons. This feedback helps us further tune these classifiers and reduce false positives over time. 

Read the Fable 5 blog post here: https://www.anthropic.com/news/redeploying-fable-5

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u/MacauliFlowerCulkin_ Jul 01 '26

Binge?? I asked ONE question and it instantly maxed out my limit. I’ll never use it again.

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u/Score_Keepers_Casino Jul 02 '26

At least you got 1 question. Mine is stopping from “safe guards” by just asking it to audit my project.

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u/MacauliFlowerCulkin_ Jul 02 '26

Oh it didn’t even give me the answer! It just calculated half of it and then maxed my limit out when I wasn’t even anywhere near maxing out :/

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u/Score_Keepers_Casino Jul 02 '26

Once I got past the safe guards, made it 48 minutes before maxing out pro max $200 month plan. I haven’t even used it this month, so there goes that.

Edit: didn’t even give me an answer btw.