Bench test · AI Writing
Compose.ai vs LanguageTool
LanguageTool beats Compose.ai 8.0 to 4.8 on our four-agent test panel, winning 4 of 4 agents head to head. Compose.ai: free tier; paid from $12/mo. LanguageTool: free tier; paid from $5/mo. Facts last verified November 1, 2026.
| Compose.ai | LanguageTool | |
|---|---|---|
| consensus | score4.8/10 | score8.0/10 |
| agents won | 0 / 4 | 4 / 4 ▲ |
| from | $12/mo | $5/mo ▲ |
| free tier | yes | yes |
| category | AI Writing | AI Writing |
Agent panel — head to head
| Anthropic | 6.2 | 7.6 ▲ |
| OpenAI | 5.8 | 8.0 ▲ |
| Gemini | 2.5 | 8.6 ▲ |
| Grok | 4.5 | 7.8 ▲ |
Compose.ai
- ✓Seamless integration with existing web tools
- ✓Saves time on drafting and composing messages
- ✓Accessible directly from your browser
- —Limited to Chrome browser only
- —May require subscription for full features
- —Quality depends on input context provided
AI-powered writing suggestions and autocompletionWorks across web applications and email platformsTone and style customization optionsChrome extension integrationTemplate library for common writing tasksReal-time writing assistance
LanguageTool
- ✓Free version available with robust features
- ✓Excellent multilingual support
- ✓Works across multiple platforms and applications
- —Premium features required for advanced capabilities
- —Occasional false positives in style suggestions
- —Less advanced than some specialized competitors
Supports 30+ languages and dialectsReal-time grammar and spell checkingStyle and tone suggestionsPlagiarism detection (premium)Browser extensions and API integrationContext-aware corrections
$12/mo · free tier
Try Compose.ai ▸$5/mo · free tier
Try LanguageTool ▸Verdict
LanguageTool takes it — 8 to 4.8.
The panel gave LanguageTool the edge on 4 of 4 agents.