Search API Latency Budget

Definition

A search API latency budget is the maximum acceptable response time for a search API call within an agent or application, above which user experience degrades or downstream timeouts occur.

In Depth

Latency budget depends on the application type. Interactive chat applications (user waiting for response): 400-800ms total tool call budget, meaning search must return in under 600ms to leave headroom for LLM generation. Background batch pipelines: 2,000-5,000ms acceptable per call. Realtime monitoring alerts: 1,000-2,000ms before missing a detection window. Typical search API latency ranges (p50 / p95, 2026): - Scavio: 350ms / 900ms - SerpAPI: 1,200ms / 3,500ms - Serper: 400ms / 1,100ms - Brave Search: 250ms / 700ms - Exa: 600ms / 1,800ms - Tavily: 800ms / 2,200ms Cold start adds 1,500-4,000ms for self-hosted or serverless MCP servers. Parallel search calls (querying multiple keywords simultaneously) can reduce total latency for multi-query tasks: 5 parallel searches at 400ms each complete in 400ms total, not 2,000ms. For interactive applications, the latency budget should be measured end-to-end: search call + result injection into prompt + LLM generation + streaming. Budget the search portion as no more than 30% of the target total response time.

Example Usage

Platforms

Search API Latency Budget is relevant across the following platforms, all accessible through Scavio's unified API:

• google

Related Terms