# Which is the BEST Coding harness for Deepseek V4 ? opencode vs pi vs jcode vs reasonix

> Source: <https://grigio.org/which-is-the-best-coding-harness-for-deepseek-v4-opencode-vs-pi-vs-jcode-vs-reasonix/>
> Published: 2026-08-08 08:25:16+00:00

# Which is the BEST Coding harness for Deepseek V4 ? opencode vs pi vs jcode vs reasonix

Same model Deepseek V4 Flash 0731 tested with different AI harnesses, huge RAM usage difference and only 2 harness were able to find a valid solution for the task.