Coinbase began the integration into Perplexity with Phase 1, supplying COIN50 index data to power Perplexity's market analysis.

Quotes that support claims

Phase 1 (now): Perplexity is now ingesting our market data, including COIN50, and using it to power market analysis.

According to Armstrong, the relationship will advance through a series of “phases,” beginning with today, the integration of Coinbase’s market data, including its COIN50 index, into Perplexity to “power market analysis.”