
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
#1Perplexity records 88,310,223 monthly visits with -3.7% month-over-month growth and Freemium pricing. Prompta records 0 monthly visits with — growth and Freemium pricing.

Bring your own ChatGPT key to a fast, automation-ready iOS chat app
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | perplexity.ai | apps.apple.com |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 88.31M (88,310,223) | 0 (0) |
| MoM Traffic Delta |
| -3.39M (-3.7%) |
| 0 (—) |
| Primary Market & Share | 🇺🇸 United States (25.5%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 63.32M | 0 |
|---|
| User Rating | 4.7 | 4.1 |
|---|
| Supported Platforms | Website | App |
|---|
Real-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Executes multi-step iterative web and document research across hundreds of sources, cross-checking facts and generating structured, citation-backed analytical reports that can be exported as PDFs or shared as interactive Perplexity Pages.
Lets Pro and Max subscribers switch dynamically between Perplexity's in-house Sonar models and top external models (including Claude 4, o3-pro, and Gemini) or compare multi-model reasoning outputs side by side.
Provides dedicated project workspaces where users upload local PDFs, spreadsheets, and text files, configure custom assistant instructions, and run queries that combine private document retrieval with live internet search.
Extends Perplexity from passive Q&A into agentic execution, turning high-level user requests into completed workflows, multi-tab browser actions, and automated data synthesis via the Comet ecosystem.

Bring your own ChatGPT key to a fast, automation-ready iOS chat app
Chat with OpenAI models inside a native iPhone app, using your own API key so you stay in control of spend and data routing.
Replies stream in token by token for a snappy feel, and every answer renders full markdown including code blocks and tables.
Export any conversation as a PNG image or PDF document, or copy individual code blocks and text snippets with one tap.
Register any Shortcut as an AI plugin so the assistant can run device actions, call third-party APIs or process links on your behalf.

OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
#1
Leverages Google's vast search index for real-time answers, but offers a standard chat interface rather than deep research feeds.
#2Provides exceptional analytical depth and writing quality, but does not focus purely on web-sourced search summaries.

Integrates real-time social data search for breaking news, but leans more toward casual chat than structured research.

Delivers agentic multi-source research and page generation, but can feel more cluttered than Perplexity's clean answer engine.

SpecialistOffers a comprehensive free index of academic literature, but lacks conversational chat synthesis for general web queries.


SpecialistFocuses exclusively on peer-reviewed scientific papers for evidence-based answers, unlike Perplexity's broad general web search.


Combines privacy-focused web search with AI summarization, though it requires a paid subscription for full access.

Chat with 30+ leading AI models in one clean, fast workspace

Free / Open-sourceOpen-source personal AI assistant that runs on your own machine and works from chat apps

SpecialistAnalyzes scholarly article citations to verify scientific claims, making it superior for academic literature reviews.
Generates structured, cited answers from live web queries, though with less polished UI and advanced model options.
OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Leverages Google's vast search index for real-time answers, but offers a standard chat interface rather than deep research feeds.
Provides exceptional analytical depth and writing quality, but does not focus purely on web-sourced search summaries.
Integrates real-time social data search for breaking news, but leans more toward casual chat than structured research.
Delivers agentic multi-source research and page generation, but can feel more cluttered than Perplexity's clean answer engine.
SpecialistOffers a comprehensive free index of academic literature, but lacks conversational chat synthesis for general web queries.
SpecialistFocuses exclusively on peer-reviewed scientific papers for evidence-based answers, unlike Perplexity's broad general web search.
Combines privacy-focused web search with AI summarization, though it requires a paid subscription for full access.
Chat with 30+ leading AI models in one clean, fast workspace
Free / Open-sourceOpen-source personal AI assistant that runs on your own machine and works from chat apps
SpecialistAnalyzes scholarly article citations to verify scientific claims, making it superior for academic literature reviews.
Generates structured, cited answers from live web queries, though with less polished UI and advanced model options.