ホームAIツールWritesonic
Writesonic logo
Writesonic
AI writing and SEO content platform for blog posts, ads, and long-form articles.
0
保存数
$39/mo (Lite, billed annually)
最低料金
Writesonic
開発元
Writesonic
製品スクリーンショット

Writesonicとは?

最終確認日: May 4, 2026 · AI Tools Set リサーチチームによる

Writesonic generates long-form content — blog posts, articles, and ad copy — with SEO features layered on top, like keyword research and content briefs meant to help written output actually rank in search. It's positioned as a content-production tool for marketing teams rather than a general-purpose chat assistant.

The free tier gives limited access to models including GPT-4o mini and Claude Haiku with usage caps, useful for testing before committing to a paid plan. Paid tiers scale up through Lite, Standard, Professional, and Advanced, with Enterprise available for larger teams — Writesonic has restructured and renamed its plan tiers multiple times, so exact caps shift more often than most competitors.

The Lite (SEO-content-focused) plan starts around $39/month billed annually, aimed at long-form blog and article production. Because plan names and limits have changed repeatedly, it's worth checking Writesonic's own pricing page for the current structure before subscribing rather than relying on any single cached price point.

Writesonicの主な機能

  • Long-form content generation: Generate full blog posts and articles, not just short snippets.
  • SEO keyword research: Built-in keyword and content-brief tools aimed at search ranking.
  • Multiple model access: Access to models including GPT-4o mini and Claude Haiku depending on plan.
  • Ad copy generation: Generate shorter-form ad and marketing copy alongside long-form content.

Writesonicの活用例

  • Draft a full SEO-optimized blog post from a topic and target keyword
  • Generate ad copy variations for a marketing campaign
  • Research keywords and content briefs before writing
  • Produce long-form articles at higher volume than manual writing allows

メリット・デメリット

メリット
SEO tooling (keyword research, content briefs) is built in, not a separate product
Free tier gives real model access, not just a crippled demo
Handles long-form content well, not just short copy
デメリット
Plan names and pricing tiers have changed repeatedly, making it harder to know what you're actually buying without checking current pricing directly
Entry paid tier ($39/mo) is pricier than budget competitors like Rytr
Best suited to SEO-focused content production, less so for other copywriting use cases
あなたのサイトでWritesonicを紹介
共有
ユーザーレビュー
Sign in to review
4.8
★★★★★
2,341 reviews
5
1,826
4
328
3
117
2
47
1
23
Writesonic Review 2026: SEO Content Pricing & Features