Articles

Our team’s insights on building better AI systems.

Jun 16, 2026

Best LLM for Data Extraction: Schematron Quality Metrics for HTML, Tables, and Noisy Pages

The best LLM for data extraction depends on the layer. See Schematron V2's published quality metrics and a reproducible harness to test models on your pages.

Jun 16, 2026

Data Extraction SDKs and APIs: Build vs Buy for HTML-to-JSON Extraction Pipelines

Build vs buy for HTML-to-JSON data extraction: the real cost of DIY parsers, an SDK/API evaluation checklist, and a schema-guided extraction API in code.

Jun 16, 2026

Langfuse vs LangSmith: Which LLM Observability Tool Fits Your Team?

Langfuse vs LangSmith compared on tracing, evals, self-hosting, and real pricing at 100K and 1M traces/month — plus a third option if traces aren't enough.

Jun 15, 2026

AI Regression Testing for LLM Apps: How to Gate Prompts, Models, and Agents

AI regression testing for LLM apps: build eval datasets from production traces, score with LLM-as-a-judge rubrics, and gate prompt, model, and agent changes in CI.

Jun 15, 2026

Crawl4AI vs Firecrawl vs Schematron: Crawling and Extraction Compared

Crawl4AI vs Firecrawl vs Schematron compared by layer: which to use for crawling, markdown, and schema-guided JSON extraction. Decision table, code, and costs.

Jun 15, 2026

Firecrawl Alternatives for Structured Extraction: When You Need JSON, Not Markdown

Firecrawl is great at crawling and markdown. When the bottleneck is schema-conforming JSON, add a dedicated extraction layer. A practical, objective guide.

Jun 15, 2026

Best Langfuse Alternatives for Agent Observability, Tracing, and Evals

Compare Langfuse alternatives for agent tracing and evals — with real June 2026 pricing, honest trade-offs, and a zero-code migration path.

Jun 14, 2026

AI Agent Monitoring: Metrics, Traces & Failure Modes

A practical guide to AI agent monitoring: the core metrics, trace data, tool-call signals, failure modes, and day-one alert thresholds for production agents.

Jun 14, 2026

AI Web Scraping in Python: HTML to Validated JSON

Build an AI web scraping pipeline in Python: fetch HTML, clean it with lxml, and extract validated JSON with a Pydantic schema and Schematron.

Jun 14, 2026

HTML-to-JSON Extraction API: Extract Typed Data from Messy Web Pages

Turn any web page into typed JSON using a schema-driven extraction API. Python + TypeScript examples, Pydantic/Zod schemas, and a batch pipeline for 10K+ pages.