I wonder how soon until we see a language designed for LLMs. I wouldn't be surprised if Anthropic or OpenAI were working on something like that.

No idea what it would look like, but it's pretty likely that "optimized for humans" and "optimized for agents" are not identical. For some class of problem, we really don't need people to be in the code, and I expect that surface area to continue to expand.

Something that is optimized for context efficiency, for example, would be huge. You can go hard on the formalism and correctness, to an extent that would be a pain in the ass for humans but LLMs don't care. Think Rust borrow checker but higher up the stack for a different class of correctness.