Claude AI Guides, Tutorials & Tips

Claude "There Was an Error Logging You In": How to Fix It

Seeing 'there was an error logging you in' on Claude? Here are ordered fixes: clear cookies, try incognito, use one account, disable your VPN, and more.

July 31, 202614 min read

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Claude AI

Claude for Excel: What It Is and How to Use It

Claude for Excel is an add-in that puts Claude in a sidebar inside Microsoft Excel to read, analyze, build, and edit your spreadsheets safely.

July 30, 202612 min read

Claude Code

Claude Code Spec Workflow: Spec-Driven Development

Learn the claude code spec workflow: turn a feature into requirements, design, and tasks, then have Claude build it phase by phase with reviews you can trust.

July 30, 202612 min read

AI Comparisons

Claude Code vs GitHub Copilot: Which Should You Use?

Claude Code vs GitHub Copilot compared honestly: terminal agent vs in-editor assistant, models, workflow, pricing shape, and when to use each (or both).

July 30, 202613 min read

Claude Models

Claude Opus 5: Price, Specs, and What Changed

Claude Opus 5 is here at $5/$25 per million tokens — the same price as Opus 4.8. The specs, the two breaking changes, and whether to migrate today.

July 30, 202611 min read

Claude AI

Claude Custom Voices: How to Choose Your Voice Mode Voice

Claude custom voices let you pick how Claude sounds in voice mode. Learn the five voice options and how to change your Claude voice on mobile and web.