the only good-enough model I still use it gpt-oss-120b-mxfp4 (not 20b) and glm-4.6 at q8 (not q4).

quantization ruins models and some models aren't that smart to begin with.

GLM-4.6 is on par with Sonnet 4.5. Sometimes it is better, sometimes it is worse. Give it a shot. It's the only model that made me (almost) ditch Claude. The only problem is, Claude Code is still the best agentic program in town and search doesn't function without a proper subscription.