qwen3-coder, running locally I had it set up testing infra using minunit and gcov and write some tests on a small ~5000 loc C project. Did it all. 2-3 months ago I tried this with codex, jules, cursor, etc. They all struggled at various parts but eventually did ok. Obviously things have changed in the last couple of months and those tools got better, but now we have them locally...
https://opencode.ai/s/x6g7jSOd
Mac Studio M3 Ultra 512 (model uses half) ~25 tps
