Claude 3 Opus can operate as a Turing machine

Posted on Twitter:

Opus can operate as a Turing machine.
given only existing tapes, it learns the rules and computes new sequences correctly.
100% accurate over 500+ 24-step solutions (more tests running).
for 100% at 24 steps, the input tapes weigh 30k tokens*.
GPT-4 cannot do this.

Here is the prompt code for the Turing machine: https://github.com/SpellcraftAI/turing

This is the fully general counterpoint to the @VictorTaelin’s A::B challenge (he put money where his mouth is and got praise for that from Yudkowsky).

Attention is Turing Complete was a claim already in 2021:

Theorem 6 The class of Transformer networks with positional encodings is Turing complete. Moreover, Turing completeness holds even in the restricted setting in which the only non-constant values in positional embedding pos(n) of n, for n ∈ N, are n, 1/n, and 1/n2 , and Transformer networks have a single encoder layer and three decoder layer