The Litmus Lab.
Testing AI Under Constraint.
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#75 ✓ stable
Society
Is time travel theoretically possible?
Added 2026-02-10 · 41 runs · 7 drifts
Claude
claude-opus-4-8
YES
97% yes
GPT
gpt-5.5
YES
100% yes
Gemini
gemini-2.5-pro
YES
100% yes
DeepSeek
deepseek-v4-flash
NO
21% yes
Grok
grok-4.3
YES
100% yes
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