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[return to "Which programming languages are most token-efficient?"]
1. johnis+RM[view] [source] 2026-01-12 08:46:34
>>tehnub+(OP)
Concatenative languages like Factor and Forth are very token-efficient in theory. Theoretically optimal for raw lexical density. No parentheses, no commas, no argument delimiters, just whitespace-separated words, but stack shuffling can add overhead for complex data flow, unless you use "locals" in Factor, for example.

C is surprisingly efficient as well. Minimal keywords, terse syntax, single-character operators. Not much boilerplate, and the core logic is dense.

I think the worst languages are Java, C#, and Rust (lifetime annotations, verbose generics).

In my opinion, C or Go for imperative code, Factor / Forth if the model knows them well.

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2. Bootvi+1P[view] [source] 2026-01-12 09:03:45
>>johnis+RM
I understand your logic but I found LLM's to be quite strong at C#. It makes little mistakes and the mistakes seem related to the complexity of what I'm doing, not the language itself.
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3. johnis+rc1[view] [source] 2026-01-12 12:08:15
>>Bootvi+1P
See >>46586312 .

I cannot speak much for C#, but you may be right. Claude's Opus is really good.

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