/Tech3h ago

Epic Games founder Tim Sweeney shares screenshot of Anthropic's Claude safety filter blocking a query about bumblebee flatulence

Story Overview

Epic Games founder Tim Sweeney posted a screenshot showing Anthropic's Claude interface blocking the query "Do bumblebees fart?" with a message about safety measures flagging even safe conversations. The exchange occurred with the newly launched Fable 5 model, whose classifiers routed the prompt onward rather than refusing it outright.

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#72

Original post

Tim Sweeney@TimSweeneyEpic#1051inTech

Thanks for keeping us safe Claude Fable 5!

12:44 PM · Jul 1, 2026 · 167.5K Views

Open Question

Broad biology rules surface everyday queries

Fable 5 routes biology and chemistry prompts to Opus 4.8 when its classifier activates, a design choice that produced the visible safety notice here. No public figures detail how often similar benign questions trigger the same path.

User Friction

Fallback keeps the chat alive but flags the handoff

Users see an explicit note when the system switches models, yet the exact volume of such switches for non-harmful inputs like basic insect facts is not reported. Anthropic has said it intends to tighten the classifiers over time.

Sentiment

Negative users criticize Claude's safety filter as overly restrictive on harmless queries like whether bumblebees fart, causing refusals and unsubscriptions, while positive users defend Anthropic as caring and praise the question itself.

Pos

15.4%

Neg

84.6%

13 comments with sentiment.

Cluster Engagement

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Posts from X

Most Activity

VIEWS3.1KRETWEETS1

Autism Capital 🧩@AutismCapital

@TimSweeneyEpic “Sir, they know about the Bumblebee farts.”

2h3.1K40

BOOKMARKS1

Oracle of Obama@oracleofobama

@TimSweeneyEpic

2h1851

LIKES47

Crow@CursiveCrow

@TimSweeneyEpic Clearly, you're trying to make a bioweapon out of bee-farts. Anthropic has to protect you from yourself.

2h1.6K47

REPLIES1

Danielle Fong 🔆@DanielleFong

the elites don't want you to know

Tim Sweeney@TimSweeneyEpic

Thanks for keeping us safe Claude Fable 5!

19m33680

Youssof Al Toukhi@Youssofal_

@TimSweeneyEpic I just think it was offended you were using it’s 10T parameters for such a question XD

3h1.2K28

Pascal Guay@pascalnet

@TimSweeneyEpic Yep asked for a simple review on a schedule app and got flagged. Completely unusable for productive purposes.

2h1.3K191

tmuxvim@tmuxvim

@TimSweeneyEpic you have been referred to the FBI for bioterrorism

3h648181

Lucas Beyer (bl16)@giffmana

@TimSweeneyEpic I mean it's a biohazard query what did you expect?

Tim Sweeney@TimSweeneyEpic

Thanks for keeping us safe Claude Fable 5!

2h919190

definitely NOT tgraybird@NOTtgraybird

@TimSweeneyEpic thanks for telling the truth claude sonnet 5!

3h80011

Lugubrious Arbitrage Q36@AmericanWinning

@TimSweeneyEpic

2h5857

Pluto242light@pluto242light

@TimSweeneyEpic You make RAM expensive so you can ask this shit

3h3336

Matt Workman@mattworkman

@TimSweeneyEpic this is banned science research

3h3504

Mikaël Dufresne@purplemikey

@TimSweeneyEpic So... What's the answer, do they fart? I'm curious now.

3h304

Bouncy Bean FG ඞ@FFA_Bean

@TimSweeneyEpic It's been 1 month since the last Fall Guys post

3h1434

Anthony@anthonyistyping

@TimSweeneyEpic confirmed. bumblebee fart is one ingredient for bio weapons!

2h1.4K2

Levi McCallum@levi

@TimSweeneyEpic Starting bioweapon research, I see!

3h3113

Quiveron@quiveron_x

@TimSweeneyEpic hahahaha, do they though @grok

3h81

Kiri@Kyrannio

@TimSweeneyEpic Lmfao oh dear

3h2583

Dorien Vibecodes@DorienVibecodes

@purplemikey @TimSweeneyEpic Yup, they do, beware next time you go & smell the flowers.

2h161

Anders Jensen-Waud@jensenwaud

@TimSweeneyEpic Yes, it did the same to me when I asked it to wire Playwright into my open source harness. It doesn't appear usable, at least not for agentic coding.

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