Grok

xAI's assistant with live X context.

Why we picked it: Good when the piece depends on what people are saying right now.

BEST FOR: TIMELY, X-AWARE POSTSFree plan · paid tiers

Alternatives

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

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

Grammar, tone, and rewrite help in every app.

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