Developer tutorials, product updates, and insights on building with search.
ResearchSeptember 29, 20268 min read
ChatGPT, Perplexity, Copilot and Gemini Cite Different Sources: A 120-Answer Study
We asked ChatGPT, Perplexity, Microsoft Copilot and Google Gemini the same 30 questions on the same day. Between them they cited 458 domains, 76% of them by one engine only, and all four agreed on a source for one question in thirty. The method, the numbers and the dataset.
Google Custom Search JSON API Shutdown (January 1, 2027): Step-by-Step Migration Guide
Google is discontinuing the Custom Search JSON API on January 1, 2027. What Google's own pages say, quoted and dated, what they leave out, and a step-by-step migration: parameter and response-field mapping tables, before-and-after Python and Node clients, the cost of the move and a testing and rollout checklist.
How to Track Your Brand in ChatGPT, Copilot and Gemini (With an API)
A practical AI visibility tracking tutorial: build a prompt set, sample ChatGPT, Microsoft Copilot and Google Gemini several times per prompt, and compute mention rate, citation share and first-mention position in Python, with the cost of every engine in dollars.
How to Monitor Google AI Overviews for Your Keywords (API Tutorial)
Build a daily AI Overview tracker: for every keyword, record whether Google showed an AI Overview, which sources it cited, whether your domain was one of them, and your organic rank from the same results page. One GET /serp call per keyword from 3 credits, with the Python to run it.
How to Scrape Google People Also Ask Questions at Scale (Python)
Build a Python pipeline that pulls Google's People Also Ask questions for a list of seed keywords, dedupes them, groups them by intent and exports CSVs for content briefs and FAQ sections. Real response keys, tested code, the cost in dollars and the limits that matter.
Best AI Visibility (GEO) Tracking Tools and APIs in 2026: Verified Pricing
Eight tools that track brands in ChatGPT, Perplexity, Gemini, Copilot and Google's AI answers, compared on entry price, engines covered and API access. Every figure was read off the vendor's own pricing page on 2026-09-29, and gaps are stated as gaps.
Best Web Scraping APIs in 2026: Verified Pricing and the Credit-Multiplier Trap
Seven web scraping APIs compared on their published baseline rate and — where the vendor actually discloses it — the real multiplier for JavaScript rendering and premium add-ons. Every figure read off the vendor's own pricing page on 2026-09-13.
Ahrefs vs Semrush vs Moz vs SpyFu API Pricing (2026): What Domain and Keyword-Gap Data Actually Costs
What API access to Ahrefs, Semrush, SpyFu, Moz and Similarweb's domain and keyword-gap reports actually costs — every figure read off a vendor's own page on 2026-09-13, with the unverifiable ones labelled instead of guessed.
Best Rank Tracker APIs in 2026: Verified Pricing, No Fake Benchmarks
Nine rank tracking APIs compared on what they actually return and what they actually cost - every price read off the vendor's own page on 2026-08-26, with the unverifiable ones labelled instead of guessed.
11 Best SERP APIs in 2026: Complete Developer Comparison
We compared every major SERP API on accuracy, pricing, and AI features. Here's our unbiased ranking, with code examples, cost analysis, and Searlo's own measured latency for developers.
Bing Search API Deprecated: Complete Migration Guide (2026)
Microsoft deprecated the Bing Search API in August 2025. Here's a step-by-step guide to migrate your application to a modern alternative with real-time Google results.
How to Add Web Search to LangChain Agents (Python)
Step-by-step guide to giving your LangChain agent real-time web search capabilities using a custom tool. Includes working code for both function-calling and ReAct agents.
Quick tutorial: create a custom web search tool for CrewAI multi-agent workflows. Give your research and analysis agents real-time Google search capabilities.
Search API Cost Comparison 2026: Who's Actually Cheapest?
Data-driven pricing comparison of SerpAPI, Serper, Tavily, Bright Data, SearchAPI.io, and Searlo. Real cost-per-query analysis for AI agents, SEO tools, and production workloads in 2026.
Google Search API in Python: Complete Guide with Code Examples (2026)
Learn how to use a Google Search API in Python with working code examples. Covers requests, async httpx, pagination, image search, news search, and error handling.