Perplexity is steering Sonar workloads toward its Agent API, a unified multi-provider interface with web search, configurable tools, reasoning controls, presets, and model selection.
New Runtime reading: The product shift is from a fixed answer endpoint to an agent loop whose model, tools, budgets, and research depth can be routed per task. Grounding still depends on source quality and tool policy; a unified endpoint does not make verification automatic.
Evidence boundary: this item uses the listed public sources and keeps vendor, author, or reporter claims attributed. The queued page is an editorial synthesis, not an independent validation of every reported metric.