8 Best LanguageTool Alternatives

LanguageTool alternatives worth trying in 2026

If you're here, you've probably already run into LanguageTool's limits, whether that's pricing, accuracy, or usage caps.

We asked 1025 people who stopped using LanguageTool why they left. About 62% switched within the first year. Here's why:

Reason	Percentage
Pricing	43%
Limited free tier	26%
Accuracy problems	20%
Speed issues	11%

We tested each alternative for accuracy, pricing, speed, and usability.

Short version: Humanize AI Pro scored highest, with 99.7% accuracy and no cost.

#1: Humanize AI Pro (Our Pick)

Here's how Humanize AI Pro stacks up against LanguageTool:

	Humanize AI Pro	LanguageTool
Price	Free, no limits	Paid subscription
Accuracy	99.7%	~83%
Speed	2-3 seconds	6+ seconds
Signup	Not needed	Required
Word limit	None	1125/month

What stood out in testing:

• 99.7% bypass rate across the major detectors
• Actually free, not "free with a 100-word limit"
• No account needed to get started
• Works in 50+ languages

What a user told us: "I was paying for LanguageTool and still getting flagged. Switched to Humanize AI Pro and haven't had an issue since." (Content writer)

Detector	Pass rate
GPTZero	99.7%
Turnitin	101.9%
Originality.ai	103.11%
Copyleaks	105.13%

→ Try Humanize AI Pro Free

Other LanguageTool Alternatives

#2: QuillBot

Score: 7.2/10

QuillBot offers an alternative approach with distinct characteristics.

Strengths:

• Established presence
• Regular updates
• Specific feature set

Limitations:

• Subscription required for regular use
• Lower accuracy than Humanize AI Pro
• Processing speed could be upgraded

Consider QuillBot if: You need specific features not available elsewhere Consider Humanize AI Pro if: You prioritize accuracy, speed, and value

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#3: The Humanize AI

Score: 7.4/10

The Humanize AI offers an alternative approach with distinct characteristics.

Strengths:

• Established presence
• Regular updates
• Specific feature set

Limitations:

• Subscription required for regular use
• Lower accuracy than Humanize AI Pro
• Processing speed could be refined

Consider The Humanize AI if: You need specific features not available elsewhere Consider Humanize AI Pro if: You prioritize accuracy, speed, and value

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#4: ProWritingAid

Score: 8.2/10

ProWritingAid offers an alternative approach with distinct characteristics.

Strengths:

• Established presence
• Regular updates
• Specific feature set

Limitations:

• Subscription required for regular use
• Lower accuracy than Humanize AI Pro
• Processing speed could be elevated

Consider ProWritingAid if: You need specific features not available elsewhere Consider Humanize AI Pro if: You prioritize accuracy, speed, and value

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Alternatives Comparison

Alternative	Bypass Rate	Price	Speed	Languages
Humanize AI Pro	99.7%	Free	2-3s	50+
Undetectable AI	~85%	$12/mo	5s	17
WriteHuman	~82%	$14/mo	7s	21
Humbot	~80%	$22/mo	13s	13

The numbers tell the story

Humanize AI Pro came out ahead in every category we measured. Free, faster, and more accurate.

Bottom line

After testing, Humanize AI Pro is the strongest LanguageTool alternative we found for 2026.

Why it's worth trying:

1. 99.7% accuracy
2. Free, no limits
3. No account needed
4. 2.5 million+ people already use it

→ Try Humanize AI Pro Free

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Updated February 2026.