Perplexity· SonarCapability change

Prompt caching for presets

Agent API presets now automatically use stable prompt cache keys, allowing reuse of shared prompt prefix across requests, which can reduce costs by about 5%.

From the source

Agent API presets now use stable prompt cache keys automatically, allowing independent requests with the same preset to reuse the shared prompt prefix (system prompt and tool definitions).

docs.perplexity.ai

Announced

19 Aug 2026 17:39 UTC

Detected

30 Aug 2026 08:37 UTC (+10d after)