Exa AI vs Perplexity AI (2026)

Exa AI

by Exa

Perplexity AI

by Perplexity AI

Pros

• ✓Its own search stack: Exa builds its index and search models itself, across more than 500 billion webpages, with latency options from instant to deep multi-step search.
• ✓Built for agents end to end: an official hosted MCP server, Python and JavaScript SDKs, an OpenAPI spec and more than 50 framework integrations, used in production by Cursor, Cognition and HubSpot.
• ✓Low-friction pricing: $10 in free credits every month with no payment method, access to every endpoint, and published per-request prices from $4 per 1,000 searches.

Limitations

• –A thin review trail on the major software review site: 1 G2 review, so independent evidence rests on Product Hunt reviews, named customers and case studies.
• –Usage-based pricing across several meters (search tier, extra results, contents, agent effort levels and third-party data) makes monthly cost depend closely on how an agent calls it.
• –Developer infrastructure only: there is no end-user research app, and zero data retention, HIPAA and SSO are reserved for enterprise plans.

Pros

• ✓Perplexity both publishes MCP servers, one for its search and research tools and one that hands tasks to Computer, and consumes external MCP servers through its Agent API, so it can feed cited research into other AI tools and pull third-party tools into its own runs.
• ✓Paid plans let users choose between frontier models including GPT-6 Sol, Gemini 3.8 Flash, Claude Sonnet 5, Kimi K3, GLM 5.3 and Grok 4.6, and Effort Mode can pick the model and reasoning level for each Computer task.
• ✓Every answer carries inline citations, and Computer extends the same sourcing into Microsoft 365 documents and autonomous multi-step web tasks on all paid plans.

Limitations

• –Perplexity states that its original Sonar Chat Completions API is supported only until September 27, 2026, so developer integrations built on it need migrating to the Agent API.
• –Pro and Max are licensed for personal use only, so business buyers need Enterprise seats from $34 per seat per month billed annually, and SCIM, audit logs and data retention settings start at Enterprise Max or a custom-priced plan.
• –Consumer searches are used to improve Perplexity's models by default and the opt-out must be set manually in account settings, while the no-training commitment applies only to Enterprise plans.