For research, review and writing, yes. For trade signals, no. A general-purpose AI has no live market data and will state a made-up price or figure with complete confidence, which is exactly the failure you cannot afford mid-session.
Where it earns its place is the work around trading: summarizing an earnings call, drafting a trading plan, tagging patterns in your journal, explaining a concept, or turning a rough idea into a written rule. Give it the data yourself rather than asking it to fetch prices, and check anything numeric against the source before acting on it.
The AI guides here cover prompts, journal analysis and earnings research, and are explicit about what to never hand to a model.