OpenAI's open-weight models. GPT-OSS brings GPT-family quality to the open-source ecosystem, runnable on your own hardware and fine-tunable for specific domains.
chatcoding
pros
open weights — self-hostable
good quality-to-size ratio
fine-tunable
no per-token API cost if self-hosted
cons
requires significant GPU resources
smaller and weaker than flagship GPT-5
no built-in tool use in base model
use this model on surp.ivc.lol
Reference this model in a custom combo to always get the cheapest price for it: