Writesonic

ClaudeFree

Long-form & nuanced writing

Anthropic's AI assistant handles nuanced, long-context writing better than almost anything else — multi-document analysis, research synthesis, and professional content that requires careful reasoning rather than confident-sounding filler. Consistently cited by writers and editors for producing outputs that don't scan as AI-written, which is a harder problem than most tools advertise solving.

GrammarlyFree tier available

AI writing & grammar assistant

The writing safety net that catches what you miss in your third readthrough. Real-time grammar, clarity, style, and tone suggestions that work across every app you write in — Google Docs, Outlook, Slack, your CMS — without copying text into a separate editor. Widely used for good reason: it makes most writing measurably better with minimal friction.

Copy.aiFree tier available

Fast marketing copy

Hundreds of proven copy templates for ads, emails, product descriptions, and social posts — structured so you get output you can actually use rather than something that needs a full rewrite to become usable. Practical, fast, and built around how marketing teams actually work rather than how writing theoretically works.