AI writing assistant for people writing in English as a second language

If you’re looking for an AI writing assistant for someone learning English, try Cambridge Write & Improve first. It’s free and made specifically for English learners: it gives feedback on your writing, offers practice tasks at different levels, and tracks progress over time. (writeandimprove.com)

For quick edits to emails or other everyday writing, DeepL Write can suggest clearer wording and phrasing in British or American English. (support.deepl.com)

Tip: Ask the tool to explain why it changed something, then revise the draft yourself—that way you’re learning, not just correcting.

If you're looking for an AI writing assistant for ESL writers, the main choice is between tools that fix errors and tools that teach. Here's what's available and what to weigh.

Options by need

• Natural phrasing: DeepL Write is aimed at sentences that are correct but still sound translated. One review says it is particularly useful when a sentence is understandable but still feels translated or slightly unnatural. Wordtune suits learners who know what they want to say but not how to say it. It offers several reworded versions in different tones (more formal, more casual, shorter, longer).
• Learning from corrections: Linguix is marketed to non-native writers, and one review notes its suggestions are framed to teach idiomatic English rather than just correct errors. QuillBot's grammar checker shows the correction in place, so a learner can see what changed and why.
• Multilingual support: LanguageTool supports 30+ languages including English, German, French, Spanish, which helps if you want to check or compare in your first language.
• Budget: LanguageTool's free tier is genuinely usable, more capable than Grammarly Free for many types of corrections.
• Industry mainstream: Grammarly is still the broadest option. One 2026 roundup calls it the gold standard with the best accuracy and seamless integration everywhere.

Learning vs. ghostwriting

The biggest risk for ESL writers is letting the tool write for them. One study of 51 EFL learners found that the group using ChatGPT for planning and feedback exhibited better writing proficiency in terms of content, structure and language use, but the same study had students do the drafting on their own. A useful assistant should explain why a change was made, not just replace the text.

If you're building one

Some researchers have already built tools for this. One team created an app to reduce the cognitive barriers EFL learners face when producing written English. Its preliminary results suggested it is a potentially useful tool for English language learners who need more structured assistance than traditional word processors.

Pricing and features change often, and many of these sources are 2026 review blogs rather than official pages, so check each tool's current plans before recommending it.

Are you looking for a tool to use, a recommendation for a class or team, or help designing or pitching a product like this? If it's the last one, I can outline features, target users, and how it would differ from Grammarly and DeepL.

For people writing in English as a second language (ESL), the best AI tools are those that don’t just "fix" your writing, but help you learn and build confidence.

Because no single tool is perfect, many experienced writers use a "stack"—a combination of 2–3 tools that handle different parts of the writing process (e.g., one for grammar, one for natural phrasing, and one for deep editing).

Recommended AI Tools by Category

How to Build Your Workflow

Instead of relying on a tool to do the work for you, try this three-step workflow to improve your actual language skills:

1. The "Native Thought" Draft

Don't struggle to translate in your head while you type. Many professionals find it more effective to write the first draft in their native language to capture the nuance and depth of their ideas. Then, use an AI tool (like ChatGPT or DeepL Write) to translate it into natural-sounding English.

2. The Feedback Layer (Learning Mode)

Use tools like Grammarly or LanguageTool to check your work. The most valuable feature here is the explanation. When the tool suggests a change, read why it is suggesting it. This helps you avoid making the same mistake twice and builds your "intuition" for English grammar and register.

3. The "Naturalness" Check

Grammatically correct English can sometimes sound "stiff" or robotic.

• Ask the AI directly: If you are using a chatbot like ChatGPT, don't just ask it to "fix my grammar". Instead, use a prompt like: "I am writing this for a [colleague/client/professor]. Does this sound natural? Does it sound too formal or too casual? How could I phrase this more clearly?"
• Readability Tools: Use Hemingway Editor to see if your sentences are too complex. It highlights long, complicated sentences that might be difficult for native speakers to follow.

Important Reminders for ESL Writers

• Academic/Professional Integrity: Always check your school or workplace policy regarding AI. Using AI to edit your work or explain concepts is usually encouraged, but submitting work entirely generated by AI can often violate academic integrity or professional standards.
• Human in the Loop: Never copy and paste without reviewing. AI can sometimes hallucinate or change the meaning of your original thought. Always treat the AI as a "writing coach" rather than a replacement for your own voice.
• Regional Nuance: Remember that tools often lean toward US English. If you are writing for a British, Australian, or other international audience, be sure to verify your spelling and terminology preferences in the tool's settings.

If you’re looking for an AI writing assistant for people who write in English as a second language, try Cambridge Write & Improve first. It’s free, designed for English learners, and gives feedback on writing with hints for revision. You can choose practice tasks at different levels, make changes, and resubmit to track your progress against the CEFR scale. ¹²

For everyday writing—such as emails, documents, and messages—Grammarly offers grammar and clarity suggestions, tone adjustments, and paragraph rewrites. Its site also describes multilingual support, including translation and writing assistance in more than 20 languages. ¹¹

A simple way to choose:

• For learning and practice: Write & Improve.
• For polishing writing across apps: Grammarly.

To get the most learning value, write your own draft first, review the suggestions, and make the edits you understand rather than accepting every rewrite automatically.