In OMP just setting the "task" role (which controls the default subagent model choice) to some cheap Flash model like Deepseek or Gemini goes a long way towards making better use of your quota.
Sol and Opus both are quite eager to use subagents and since the subagent tasks are often well specified and then verified by the main model there's hardly any advantage to using anything better for the subagent anyway, so IMO it's a no-brainer.
For me switching the main model to Kimi K3.1 Pro would put me towards 100% open, but I don't know if it uses subagents effectively. Any other open models I noticed just don't utilize them very much.
Sol and Opus both are quite eager to use subagents and since the subagent tasks are often well specified and then verified by the main model there's hardly any advantage to using anything better for the subagent anyway, so IMO it's a no-brainer.
For me switching the main model to Kimi K3.1 Pro would put me towards 100% open, but I don't know if it uses subagents effectively. Any other open models I noticed just don't utilize them very much.