My use-case is only coding, every model sucks at writing good literature and there is no way around that (have had people try to debate me on this, but it's a taste thing, I have extensive English writing skills from my school years).

Prior to two weeks ago, I was just using Pi and Ollama.

I have tried my hand at putting together a few harnesses and I finally landed on what I like. Been working on this small app to handle running llama-server for me from any device that has the llama-cpp stack setup: https://github.com/SamInTheShell/loom

Qwen 3.8 is the first model I've been using that hasn't been having issues doing edit calls. Here are my llama server settings and GUFF that I use: https://gist.github.com/SamInTheShell/0bf838e8dc5093583b688e...

try using pi harness, hae not encountered these sort of problem myself also yuou can ask codex to look at the transcript and figure out the solutions to tool call failures that way