Maybe I am misunderstanding but I feel like https://www.jan.ai/ is similar and works great for me

We are working on Msty Claw that's local, private, and no telemetry as well: https://msty.ai/claw

When was the first release of this? Parent mentioned "polished" so I'd assume something at least a 6-12 months old, but that looks kind of brand new.

This wasn't possible 12 months ago, and barely 6 months ago.

Interesting. I would not think of age when someone requests “cleaner and more polished”. My mind translates that to “nicer UI”

"Polishing" is something you do over time, and requires usage over time together with refinements, you can't spend a couple of hours refining the UI and suddenly it's "polished", at least in my mind.

Lemonade, in particular if you are running AMD hardware due to extra optimization (Ryzen AI series CPUs with integrated NPU and/or Radeon GPUs):

https://lemonade-server.ai/

Librechat?

No.

TL/DR - "cleaner and more polished" implies no vibe coded slop, and the only reason people start these projects in 2026 is because they're addicted to vibe slop coding.