Copy.ai vs Writesonic: Which AI Writing Tool Is Better in 2026?
Copy.ai
From $36Writesonic
From $16Quick verdict
Overall pick: Writesonic
Writesonic is the stronger pick for most buyers here: it costs less at the starting tier ($16 vs $36), matches Copy.ai on templates, brand voice, browser extension, team workspaces, multilingual output, and API, and adds SEO optimisation, which Copy.ai lacks. Copy.ai remains a reasonable choice for teams whose work is sales copy and GTM workflows rather than SEO content. Neither tool offers a plagiarism checker, so buyers who need that must look elsewhere or pair these with another service.
- Writesonic's entry plan ($16) is 56% cheaper than Copy.ai's ($36).
- Both offer a free plan, so you can test them side by side at no cost.
- Only Writesonic offers: seo optimisation.
Cost calculator
| Tool | Monthly | Yearly |
|---|---|---|
| Copy.ai · flat | $36.00 | $432 |
| Writesonic · flat | $16.00 | $192 |
Based on entry-level paid plans. Prices change, so check the vendor before you buy.
Which one should you choose?
| If you need… | Pick | Why |
|---|---|---|
| Buyer who needs SEO-optimised blog content | Writesonic | Writesonic has an SEO optimisation mode; Copy.ai does not. |
| Budget-conscious buyer comparing starting prices | Writesonic | Writesonic starts at $16 versus $36 for Copy.ai, both on flat billing. |
| Sales team producing outreach and GTM copy | Copy.ai | Copy.ai lists sales copy and GTM workflows as its best-for use cases. |
| Agency producing content for multiple clients | Writesonic | Writesonic lists agencies among its best-for use cases and includes SEO mode. |
| Buyer who requires a plagiarism checker | Tie | Neither Copy.ai nor Writesonic offers a plagiarism checker. |
Feature comparison: Copy.ai vs Writesonic
| Feature | ||
|---|---|---|
| Free plan | ✅ | ✅ |
| Starting price | $36 /mo | $16 /mo |
| Copy templates | ✅ | ✅ |
| Brand voice / style memory | ✅ | ✅ |
| Plagiarism checker | — | — |
| Browser extension | ✅ | ✅ |
| SEO optimisation | — | ✅ |
| Team workspaces | ✅ | ✅ |
| Multilingual output | ✅ | ✅ |
| Public API | ✅ | ✅ |
Highlighted rows are where the tools differ.
Pros and cons
Copy.ai
- Flat-rate pricing starting at $36 with a free plan available
- Covers templates, brand voice, browser extension, team workspaces, multilingual output, and a public API
- Positioned for sales copy and GTM workflows
- No SEO optimisation mode
- No plagiarism checker
- Higher starting price than Writesonic ($36 vs $16)
Writesonic
- Lower starting price at $16 on flat billing, with a free plan
- Includes SEO optimisation, which Copy.ai lacks
- Matches Copy.ai across templates, brand voice, browser extension, team workspaces, multilingual output, and API
- Positioned for SEO blog posts and agencies
- No plagiarism checker
- Its stated focus is SEO content rather than sales or GTM workflows
At a glance
AI workflows for go-to-market teams.
Founded 2020 · From $36 · 6/8 tracked features
Best for: sales copy, GTM workflows
See Copy.ai alternatives →AI writer focused on SEO content.
Founded 2020 · From $16 · 7/8 tracked features
Best for: SEO blog posts, agencies
See Writesonic alternatives →FAQ
Is Copy.ai cheaper than Writesonic?
No. Copy.ai starts at $36 and Writesonic starts at $16; both use flat billing and offer a free plan.
Does either tool have an SEO mode?
Only Writesonic has SEO optimisation. Copy.ai does not offer it.
Do Copy.ai and Writesonic include plagiarism checkers?
No. Neither tool lists a plagiarism checker among its features.
Which tool is better for sales copy?
Copy.ai lists sales copy and GTM workflows as its best-for use cases, while Writesonic focuses on SEO blog posts and agencies.
Do both tools offer a public API and team workspaces?
Yes. Both list team workspaces and a public API, along with templates, brand voice, a browser extension, and multilingual output.
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Data last reviewed: pending verification. All AI Writing tools →