Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

You.com (Developer Tools): You.com offers high-performance Web Search, Contents, Research & Finance APIs to ground AI agents and LLMs in real-time, cited web data. Pricing: from from $5/1k calls. (data verified July 2026)
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You.com provides a suite of purpose-built web search APIs designed for AI developers and enterprises. Instead of relying on static datasets or outdated search indexes, You.com APIs deliver real-time, source-backed web, content, and financial intelligence to power AI agents, research tools, data pipelines, and LLM-based applications.
Building AI systems that depend on fresh, accurate web information is challenging—scraping is brittle, latency is high, and results often lack source transparency. You.com solves this by offering a governed, low-latency API layer that returns clean, LLM-ready content with inline citations, filtering, and multi-step synthesis capabilities.
You.com is ideal for developers building AI agents, chatbot platforms, enterprise knowledge retrieval systems, and financial data tools. It is not suited for casual users looking for a general search engine; it is a developer-first platform requiring API integration.
Teams use You.com APIs to ground their LLMs in real-time web results for customer support, competitive research, and compliance monitoring. Financial firms leverage the Finance Research API to automate multi-source filings analysis and macroeconomic data retrieval. Researchers rely on the Research API for synthetic multi-step question answering with traceable sources.
Editorial score from our review methodology — not user ratings.
You.com pricing: from $5/1k calls.
1–100 results per call, includes News Search endpoint, LLM-ready snippets, country & language targeting, up to 100 URLs per call via livecrawl.
Batch multiple URLs per request, returns clean Markdown or raw HTML, reliable page extraction at scale.
Fast retrieval for simple factual lookups; additional tiers (Standard, Deep, Exhaustive) for deeper multi-source synthesis. #1 in DeepSearchQA.
Thorough multi-source financial research covering filings, macro data, markets, and derived calculations. Cited answers with [[n]] source references.
All new accounts receive $100 free credit to get started. No model training, SOC 2 certified.
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