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Resource / Free AI APIs
Perplexity API
Offers the Sonar API with search and citation capabilities, suited to applications that need real-time information.
Free and open source
Official documentation and pricing are public; free credits must be confirmed against current account policy.
Quality score
27 / 30
Strong Candidate · Maintenance risk 4/5
Official sources
Last verified: 2026-08-28. A free tier is not a permanent commitment; re-check the official conditions before use.