SpecificationPerplexityMicrosoft Copilot
Starting PriceFree $0/month · Pro from $20/monthFree $0/month · Microsoft 365 Personal from $9.99/month
AI ModelsMultiple frontier models from OpenAI, Anthropic, Google and others; catalog rotatesMicrosoft Copilot uses OpenAI GPT-5.x family in Microsoft 365 Copilot; exact model varies by mode and rollout
Context WindowNot disclosed as a single app-wide token limit; varies by model, search mode and planNot disclosed as a single consumer-app context window; depends on Copilot experience and underlying model
Advanced ReasoningAdvanced reasoning models available on Pro/Max; higher limits on MaxAdvanced Copilot chat with reasoning and agentic workflows; higher usage on paid plans
Web SearchBasic web search on Free; extended Pro Search on paid plans with citationsWeb-grounded Copilot answers and cited online sources
Deep ResearchResearch performs multi-step investigations and cited reports; Free 1/month, higher paid allowancesResearcher replaces retired Deep Research; multi-step cited reports on Microsoft 365 Premium/Pro and eligible business licenses
Image UnderstandingImage upload and analysis supported; attachment limits depend on planUpload PNG/JPEG/PJP/JFIF images; Copilot Vision can interpret screen or camera during supported voice sessions
Image GenerationImage generation on Pro, Education Pro, Max and Enterprise; not included on Standard FreeAI image creation from prompts; free capacity limits and higher allowances on paid Microsoft 365 tiers
Voice InputVoice-based query input in supported mobile experiences; availability varies by platformMicrophone dictation and voice prompts on supported platforms
Voice ConversationsVoice assistant experiences available on supported Perplexity apps; availability and limits varyReal-time Copilot Voice; feature availability and plan restrictions vary between personal and work accounts
Video UnderstandingVideo upload/analysis availability depends on current app and plan; exact general limits not disclosedCopilot Vision offers live camera or screen understanding in eligible voice sessions; general video-file analysis limits not disclosed
Conversation MemoryPersonalization and memory vary by plan; Max Brain preview builds project/file context in Perplexity ComputerCopilot memory and personalization where available; previous chats accessible across supported experiences
File AnalysisFile upload and analysis; limited on Free; Pro supports up to 50 files per project; higher Enterprise allowancesPDF, DOCX, XLSX, PPTX, PNG, JPEG, TXT, JSON, CSV, MD and others; up to 20 files per conversation, 50 MB each
IntegrationsConnected app sources and file connectors; Enterprise centrally governs internal knowledge accessWord / Excel / PowerPoint / Outlook / Teams / OneDrive / SharePoint / Edge and eligible connectors
