Bench test · AI Writing
Grammarly vs QuillBot
Same rack, same rubric, four independent agents. Here's how they measure up — and which we'd pick.
| Grammarly | QuillBot | |
|---|---|---|
| consensus | score9.0/10 | score7.9/10 |
| agents won | 4 / 4 ▲ | 0 / 4 |
| from | $12/mo | $10/mo ▲ |
| free tier | yes | yes |
| category | AI Writing | AI Writing |
Agent panel — head to head
| Anthropic | 8.2 ▲ | 7.2 |
| OpenAI | 8.8 ▲ | 7.8 |
| Gemini | 9.4 ▲ | 9.2 |
| Grok | 9.5 ▲ | 7.3 |
Grammarly
- ✓Catches errors missed by other tools
- ✓Improves writing clarity and professionalism
- ✓Works across multiple platforms seamlessly
- —Premium features require paid subscription
- —Can be overly cautious with style suggestions
- —Occasional false positives in corrections
Grammar and spelling correctionTone detection and adjustmentClarity and readability suggestionsPlagiarism detectionAudience-specific writing guidanceBrowser and app integration
QuillBot
- ✓Easy-to-use interface with instant results
- ✓Flexible modes for different writing contexts
- ✓Affordable freemium model available
- —Free version has limited daily usage
- —May occasionally produce awkward phrasing
- —Requires subscription for full feature access
Multiple paraphrasing modes (Standard, Fluency, Creative, Formal, Simple)Grammar and spell checkingPlagiarism detectionTone adjustment (Professional, Academic, Creative, etc.)Summarization toolCitation generation
$12/mo · free tier
Try Grammarly ▸$10/mo · free tier
Try QuillBot ▸Verdict
Grammarly takes it — 9 to 7.9.
The panel gave Grammarly the edge on 4 of 4 agents.