Looking at their blog about it, I don't think Evolver has any claim to be honest. They make such generic claims as that session history was copied because they implemented their history in some `.jsonl` files while Hermes has a session history using sqlite FTS. Evolver better have some attribution crediting Anthropic for their session history feature, because as far as I can tell they've had that implemented since early 2025! Using .jsonl files no less, coincidentally the same way that Evolver decided to implement session history.

I was expecting them to show code samples or something, but to me it looks more like these were two projects that ended up coming up with similar looking features, even with different implementations of these features. I don't see how Nous Research owes them any explanation, especially since at least from that linked issue they were coming in really hot with accusations of plagiarism. If I owned a large OSS project that amassed issues/discussions/PRs at a rate of ~4k per month I would probably also treat this kind of thing as spam.