Perplexity Sonar Deep Research runs a multi-step research workflow: planning, iterative searching, cross-referencing, and synthesis. Produces long-form reports with many citations. Best for analyst-grade investigations; takes longer and costs more than single-shot Perplexity calls. Prompt example 1: Write an in-depth research report on global EV charging infrastructure covering market size, main business models, regional policy comparisons and five-year trends. Prompt example 2: Do a literature review of the past five years of research on how remote teaching affects student learning: key findings, method differences and open questions. Prompt example 3: I plan to open a pet-friendly cafe in Taiwan. Prepare a market research report covering target customers, competition, relevant regulations and operating risks. Prompt example 4: Write an in-depth report on the global advanced semiconductor packaging industry: technology roadmaps, major players, capacity plans and supply chain risks, with references. Prompt example 5: Review the clinical literature on how intermittent fasting affects adult weight and metabolic markers, comparing study designs, sample sizes and conclusions. Prompt example 6: Northwind Ltd. wants to bring its smart home products to Southeast Asia. Assess Indonesia, Vietnam and Thailand on market size, channels, certification rules and entry strategy. Prompt example 7: Prepare a comparative study of offshore wind development across countries: installed capacity, policy tools, localization rules, fisheries coexistence cases and lessons. Prompt example 8: Write a competitive analysis of online language learning platforms comparing business models, user base, course features and recent growth strategies. Prompt example 9: Compile a case study report on major personal data breaches worldwide over the past decade: common causes, how they were handled and protective measures companies can take, with references. Prompt example 10: (Upload a draft company sustainability report docx) Research the latest main international sustainability disclosure standards, check the draft for gaps and write an improvement report. Maximum context window (input and output combined): about 128,000 tokens. Maximum output per reply: about 8,000 tokens (model reasoning, if any, counts toward this limit). Maximum total upload size per request: 512MB (all files and message content combined). Accepted document formats: pdf, docx, xlsx, pptx, txt, csv (file content is provided to the model as extracted text). Accepted image formats: gif, jpeg, jpg, png, webp. Maximum size per image: 50MB. Image dimensions: at least 200 pixels per side. Maximum image resolution: 36,000,000 pixels in total. Output content formats: Text Pricing: Very high Continuous conversation: Supported AI can make mistakes. Please verify important information.