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Claude Fable 5.1

anthropic/claude-fable-5.1

Thinks until its budget runs out on most cubes, at every setting, so it rarely writes an answer. When it does answer, it is usually right. Every empty call is still paid for, so each cube is expensive.

Effort
ScrambleCubes · pick one to replaySolved
6 moves2/102/10
10 moves1/101/10
20 moves0/100/10

Cube numbers are shared: cube 3 at 6 moves is the same puzzle for every model.

6 moves · Cube 1

move 0/6 · scrambling
Scramble
Solve
No answer. The model wrote nothing to play.