Author

Manuel Castillo

AI Lead Engineer

Manuel writes about choosing AI tools, defining bounded workflows and evaluating the evidence behind business automation decisions. His Fixed Labs articles focus on practical selection criteria, verification and the people responsible for approving the result.

Articles by Manuel

• Devin Desktop vs Claude Code: Choose the Right Setup

  Compare Devin Desktop and Claude Code by workspace, permissions, review and task continuity. Use a five-question worksheet before choosing a coding-agent setup.

• CPA Billing AI: From Team Knowledge to Working Agent

  How Fixed Labs embedded with an invoicing team for two weeks to map billing exceptions, document approved rules and manage a supervised agent through Susan.

• AI Readiness Assessment for CPA Firms: A Scorecard

  Use this practical CPA firm AI readiness assessment to score workflow documentation, data, controls, exceptions, and measurable business value.

• Susan vs Devin: AI Employee or AI Software Engineer?

  Susan vs Devin explained: compare a fully managed AI employee for recurring business operations with Devin’s autonomous software engineering focus.

• Airtable vs Notion: Best Ops Database

  Airtable vs Notion for business operations: compare databases, workflows, AI, cost risk, and when each tool produces better ROI.

• Gumloop vs Lindy: Best AI Automation Tool

  Gumloop vs Lindy for business automation: compare workflow control, AI assistants, pricing risk, implementation fit, and ROI.

• Devin Desktop Review: Agent Command Center IDE

  Devin Desktop review of agent orchestration, pricing, ACP support, and how it compares with Cursor, Claude Code, and Codex for engineering teams.

• Codex vs Claude Code: Which Coding Agent Fits Your Team?

  Codex vs Claude Code for teams: compare app workflow, terminal control, review risk, repo setup, automation fit, and implementation ROI.

• Firecrawl vs Browserbase: Pick the Right AI Agent Tool

  Firecrawl vs Browserbase guide for business owners comparing AI web scraping, browser agents, pricing risk, implementation fit, and automation ROI.

• Claude Code vs Cursor: Which AI Coding Tool Wins in 2026?

  A practical Claude Code vs Cursor comparison covering pricing, IDE support, AI models, team workflows, and when to use each tool.

• Supabase vs Firebase: Best Backend for AI-Powered Apps?

  A practical Supabase vs Firebase comparison for business owners building AI-powered apps: pricing, vector search, database model, self-hosting, and scaling.

• Lovable vs Replit: Best AI App Builder for Business?

  Lovable vs Replit comparison for business owners: pricing, features, deployment, framework support, and which tool ships production apps faster.

• n8n vs Zapier vs Make.com: Best Automation Platform

  n8n vs Zapier vs Make.com for business owners: ease of use, pricing models, self-hosting, AI automation, integrations, and long-term maintainability.

• Zapier vs Make.com: Best Automation Tool in 2026

  Zapier vs Make.com for business owners: compare ease of use, pricing logic, AI automation, integrations, workflow complexity, and operational safety.

• OpenClaw vs Hermes Agent: Use Cases and Risks

  OpenClaw vs Hermes Agent for business owners: what each AI agent does, why people compare them, key differences, use cases, costs, and risks.