AI Share LabAI SHARE / USAGE / TREND
By job role ・ Writers

Best AI tools for writers — ranking

A recommended ranking of AI strong at writing, structuring, proofreading and rewriting articles, compared for writers by the naturalness of their prose.

A. Which AI is best for Writers?
#1 is Claude. Then ChatGPT and Google Gemini. Ordered with a focus on Japanese support・File reading.
Use cases

AI use cases for Writers

Outlining & headingsDrafting & rewriting copyProofreading & polishingBrainstorming titles & hooksCleaning up interview transcripts
1
Claude
Anthropic ・ Popularity score 36.3 ・ share 3.8%
Free tier
$20/mo+

Anthropic's AI chat — praised for long-form writing, coding and careful prose; share is trending up.

Japanese support: ○File reading: ○View data →
2
ChatGPT
OpenAI ・ Popularity score 77.1 ・ share 77.6%
Free tier
$8/mo+

OpenAI's AI chat — the default choice, leading the global AI chatbot market share by a wide margin.

Japanese support: ○File reading: ○View data →
3
Google Gemini
Google ・ Popularity score 37.2 ・ share 7.0%
Free tier
$7.99/mo+

Google's AI chat — strong at search and Google-service integration; share is rising fast, especially in Japan.

Japanese support: ○File reading: ○View data →
4
Perplexity
Perplexity AI ・ Popularity score 36.9 ・ share 7.9%
Free tier
$20/mo+

An AI search engine that answers with citations; very popular for search use cases.

Japanese support: ○File reading: ○View data →

Source: StatCounter (popularity share) + each official site (features, pricing) ／ Captured: 2026-06 ／ Reference ranking by our editors

Frequently asked questions

Which AI is the best for Writers?
Claude. The rating prioritizes support for Japanese support・File reading and popularity.
What kind of work can Writers use AI for?
It can help with Outlining & headings, Drafting & rewriting copy, Proofreading & polishing, Brainstorming titles & hooks and more.
Can I use it for free?
Many of the AIs featured have a free plan, so we recommend trying them for free first before considering a paid plan.

Explore other roles & use cases

AI for Engineers→AI for Marketers→AI for Sales→AI for Designers→AI for Accounting & back office→Overall AI popularity ranking→

⚠ These rankings are reference values based on public market-share data, web-traffic estimates and editorial research, and do not represent a complete count of every user of each AI tool. Rankings change with the measurement method (web-visit share vs. market share, etc.). Always check each official site for the latest information.