Perplexity API: GPT-5.6, Grok 4.5, and the finance_search Tool

What's New in Perplexity Sonar API

Perplexity updated the Sonar API with several important changes:

New Models

• gpt-5.6 – OpenAI model available via Perplexity routing
• grok-4.5 – xAI model with access to X/Twitter data
• Both models support Perplexity search augmentation

New Tool: finance_search

• Real-time financial data: stock prices, cryptocurrencies, macro indicators
• Integrated directly into API calls
• Support for historical data up to 5 years

Why It Matters
Perplexity is becoming an aggregator for AI model routing — developers can access multiple models through one API with the added value of search augmentation. finance_search opens up new use cases for fintech applications.