Perplexity AI
AI-powered answer engine for real-time, cited information and advanced research.
VS
Speak
The language learning app that gets you speaking
Detailed comparison
Criteria
Perplexity AI
Speak
Pricing
Freemium
Freemium
Plans & pricing
Free Plan: Free, Perplexity Pro: $16.67/mo, Education Pro: $10/mo, Perplexity Max: $166.67/mo, Perplexity Enterprise Pro: $33.33/mo, Perplexity Enterprise Max: $270.83/mo, API Pricing: Custom
Free: Free
Free trial
No
Yes
Audience
b2c
b2b
Platforms
Web
Web, Ios, Android
API
No
No
Open Source
Proprietary
Proprietary
Categories
Specialized Technologies, information technology & services, Search engine
Specialized Technologies, information technology & services, Language learning
Popularity
Very High
Very High
Description
Perplexity AI is a research-oriented answer engine that integrates large language models with live web search, transparent citations, document analysi...
Speak is the first and only app that provides real conversational practice without needing a live tutor. It leverages serious AI technology to make na...
Pricing
Perplexity AI
Freemium
Speak
Freemium
Plans & pricing
Perplexity AI
Free Plan: Free, Perplexity Pro: $16.67/mo, Education Pro: $10/mo, Perplexity Max: $166.67/mo, Perplexity Enterprise Pro: $33.33/mo, Perplexity Enterprise Max: $270.83/mo, API Pricing: Custom
Speak
Free: Free
Free trial
Perplexity AI
No
Speak
Yes
Audience
Perplexity AI
b2c
Speak
b2b
Platforms
Perplexity AI
Web
Speak
Web, Ios, Android
API
Perplexity AI
No
Speak
No
Open Source
Perplexity AI
Proprietary
Speak
Proprietary
Categories
Perplexity AI
Specialized Technologies, information technology & services, Search engine
Speak
Specialized Technologies, information technology & services, Language learning
Popularity
Perplexity AI
Very High
Speak
Very High
Description
Perplexity AI
Perplexity AI is a research-oriented answer engine that integrates large language models with live web search, transparent citations, document analysi...
Speak
Speak is the first and only app that provides real conversational practice without needing a live tutor. It leverages serious AI technology to make na...
Features
Perplexity AI
Real-time answers with cited sources
Perplexity Computer for autonomous, multi-model AI workflows
Access to advanced AI models (GPT-5.1, Claude Opus 4.5, o3-pro, etc.)
File upload and analysis (PDFs, spreadsheets, reports)
Comet AI-native browser for integrated web assistance
Focus Modes for targeted searches (Web, Academic, Social, Health, Finance)
Speak
AI-powered Conversational Practice
Learning Without Live Tutors
Proven Language Learning Method
Fluency Building
7-Day Free Trial
Key differentiators
Perplexity AI
- Real-time answers with cited sources
- Agentic AI workflows (Perplexity Computer)
- Document analysis & specialized focus modes
Speak
- AI-powered Conversational Practice
- Learning Without Live Tutors
- Fluency Building
Other comparisons
FAQ: Perplexity AI vs Speak
Perplexity AI: AI-powered answer engine for real-time, cited information and advanced research.. Speak: The language learning app that gets you speaking. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. Perplexity AI is freemium and Speak is freemium.
The best choice between Perplexity AI and Speak depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
Perplexity AI is primarily designed for individuals, while Speak is built for individuals.
Perplexity AI offers: Real-time answers with cited sources, Perplexity Computer for autonomous, multi-model AI workflows, Access to advanced AI models (GPT-5.1, Claude Opus 4.5, o3-pro, etc.), File upload and analysis (PDFs, spreadsheets, reports). Speak offers: AI-powered Conversational Practice, Learning Without Live Tutors, Proven Language Learning Method, Fluency Building.
Based on our data, Perplexity AI currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.