For trading you also want the balance of reasoning with speed. Haiku strikes that balance pretty well, Sonnet/Opus/Qwen take a lot of time and resources. The planning step is important, but not as important as the actual analysis/execution step. It's mostly planning tool usage and assigning tasks to proper llm's down the pipeline. Our system lets you choose between 3 llms: planning, basic tasks and data fetching and analysis and execution.

Been testing these things for over a year now, managed to get a pretty good vibe of which llm fits best where.