Exa AI vs Perplexity
Two of the most-asked-about agents in the developer-tools space. Here's how they actually stack up.
Exa AI
Neural search API for AI agents that understands meaning, not just keywords
Free tier
Read full review →Perplexity
AI search engine with citations and an agentic browser layer
Free + $20/mo
Read full review →Side-by-side comparison
| Exa AI | Perplexity | |
|---|---|---|
| Tagline | Neural search API for AI agents that understands meaning, not just keywords | AI search engine with citations and an agentic browser layer |
| Pricing | Free tier | Free + $20/mo |
| Categories | developer-tools, api, productivity | search, research, browser-agent |
| Made by | Exa | Perplexity AI |
| Launched | 2022-11 | 2022-12 |
| Platforms | API | Web, macOS, Windows, iOS, Android |
| Status | active | active |
Exa AI highlights
- + Neural search that ranks by semantic similarity, not keyword frequency
- + Full content retrieval: get full page text alongside search results
- + Autoprompt feature that rewrites queries to improve neural search quality
- + Highlights extraction to pull the most relevant sentences from results
- + Research-grade search with academic and technical content coverage
Perplexity highlights
- + Citation-first answers with numbered source links on every response
- + Multi-model picker supporting Claude, GPT-5, Gemini 3, and Perplexity Sonar
- + Spaces for organizing research into shared collections
- + Pages for publishing AI-generated reports as shareable documents
- + Perplexity Comet agentic browser with web automation and task execution
Frequently Asked Questions
Which is better, Exa AI or Perplexity?
Neither is universally better. Exa AI (Free tier) leans into developer-tools, while Perplexity (Free + $20/mo) is closer to search. Pick based on which workflow you actually do every day.
What is the price difference between Exa AI and Perplexity?
Exa AI is free tier. Perplexity is free + $20/mo. See the pricing row in the comparison table.
Can I use Exa AI and Perplexity together?
In most cases, yes. They serve overlapping but distinct needs, so running them side by side is common until you decide which fits your workflow.