Claude

Anthropic's assistant. Strong long-form writing and editing.

Why we picked it: Natural voice, follows style guides, handles long docs well.

BEST FOR: LONG-FORM DRAFTSFree plan · paid tiers

Alternatives

The generalist. Writing, research, files, images, all in one.

xAI's assistant with live X context.

Grammar, tone, and rewrite help in every app.

Source: official site (https://claude.ai). Pricing not independently confirmed; check the vendor.