Deep Research and Thinking mode are the two ChatGPT features actually worth learning properly

Deep Research producing comprehensive cited reports rather than search results changed what questions I am willing to try to answer in a session. A research task that previously required hours of manual synthesis across multiple sources now produces a structured report in a timeframe I can actually use. The quality ceiling depends on question complexity. The floor has risen significantly.

Thinking mode for complex analytical work is the setting worth using on multi-variable problems where the reasoning chain is what produces the right answer. Strategy decisions, technical architecture, pricing scenarios with competing considerations. The extra time is worth it when shallow reasoning produces the wrong answer.

The Canva and Adobe Photoshop integrations available through the same interface as text generation is the context-switch reduction for creative workflows I had not fully appreciated until I started using it. Staying in one conversation while generating visual assets from it rather than tab-switching is a friction reduction that adds up across a working day.

How are you using Deep Research specifically? Looking for examples of questions it handles well versus where it still falls short.