You.com

The suite ships four discrete APIs: a Web Search API for real-time results with snippets, a Contents API for pulling full page HTML or text from arbitrary URLs, a Research API that handles multi-step synthesis and tops the DeepSearchQA benchmark, and a Finance Research API that reconciles sources across filings and macro data, scoring 87.29% on FinSearchComp. Each returns structured output with source URLs attached, so attribution is built into the response shape rather than bolted on later. The Python SDK keeps integration to a handful of lines. Where the ceiling appears: there is no self-hosted option, so every call routes through You.com's infrastructure — a non-starter for teams operating in air-gapped or data-residency-constrained environments. Finance Research API calls carry a steep per-call cost, which makes high-frequency queries expensive fast.