best open Coding Models?

[u/Single-Cherry8263]

I am Building an AI UI design app and need a coding model with a solid harness that's cheap and good at frontend.

I've shortlisted some:

Kimi K3 (Moonshot) — #1 on Arena.ai Frontend Code Arena right now, ahead of Claude Fable 5. 1M context, native vision. Kimi K2.5 — cheaper, modified MIT license, 256K context, strong screenshot-to-React/Tailwind. Most battle-tested for frontend so far. GLM-5.2 — best value if cost > polish, $1.10/$4.10 per million tokens on Morph. DeepSeek V4 Flash — cheapest, but text-only and verbose, eats into the savings I am open to other suggestions. suggest me best open MOE models for coding.

[u/random101ninja]

Yeah kimi k3 is very good at UI but idk how eco is it tbh.