Artificial Analysis benchmarks search APIs built for AI agents

Artificial Analysis released a new benchmark called the Search Index that rates search API providers for AI agents on quality, cost, and speed. Testing seven providers with GPT-5.6 Luna, Parallel, Exa, and Firecrawl scored highest.

Why it matters: As more products shift from chatbots to autonomous agents, the quality of the search tools those agents call becomes a hidden but critical dependency — a weak search API can bottleneck an otherwise capable model. This follows Artificial Analysis's broader push into independent AI benchmarking, signaling that agent infrastructure, not just base models, is becoming a competitive category worth measuring on its own.