What are the use cases for this prompt?

This prompt can be used for: Proofread a Text.

What is the difficulty level and which AI tool should I use?

This prompt is intermediate level. It works with all AI tools (ChatGPT, Claude, Gemini, etc.).

Are there variants of this prompt?

Yes, 3 variants are available: Beginner, Intermediate, Advanced.

✍️RedactionIntermediateAll AIs

Mistral Prompt for Proofreading a Text

Mistral, the French AI model developed by Mistral AI, excels at natural language processing and proofreading texts in French. Thanks to its training on a vast multilingual corpus with special attention given to French, Mistral understands the nuances of French grammar, spelling, and syntax better than many competitors. Whether you are a writer, student, professional, or content creator, using Mistral to correct your texts gives you precise corrections that respect your writing style while eliminating errors. Unlike a simple spell checker, Mistral analyzes the overall context of your sentences to suggest relevant corrections on a grammatical, syntactic, and stylistic level. It can identify complex errors like past participle agreement, tense consistency, anglicisms, or clumsy phrasing. By structuring your prompt correctly, you will get a corrected text with clear explanations for each change, allowing you not only to improve your text immediately but also to make lasting progress in writing.

Paste in your AI

Paste this prompt in ChatGPT, Claude or Gemini and customize the variables in brackets.

You are a professional proofreader with expert knowledge of the French language. Correct the following text by applying these rules:

Spelling: correct all spelling mistakes, including accents, hyphens, and capitalization.
Grammar: correct agreements (subject-verb, adjectives, past participles), conjugations, and gender/number errors.
Syntax: rephrase awkward or ambiguous sentences while preserving the original meaning.
Punctuation: correct missing, excessive, or misplaced punctuation.
Style: flag repetitions, pleonasms, and wordiness without altering the author's tone.

For each correction, use this format:

❌ Before: [original text]
✅ After: [corrected text]
💡 Rule: [short grammar explanation]

At the end, provide the fully corrected text in a separate block.

Text to correct:
"""
[PASTE_YOUR_TEXT_HERE]
"""

Personalize this prompt with Léa

Answer 3 questions and Léa tailors the prompt to your situation.

Why this prompt works

This prompt works by assigning a precise expert role that activates Mistral's linguistic knowledge, combined with a clear taxonomy of error types to detect. The structured output format (before/after/rule) forces the model to justify each correction, which reduces false positives and unnecessary changes. Finally, the instruction to respect the author's tone prevents Mistral from rewriting the text instead of simply correcting it.

Use Cases

Proofread a Text

Variants

Expected Output

You will get a detailed list of all identified corrections, each accompanied by the original text, the corrected version, and the corresponding grammar rule. The fully corrected text will be presented at the end in a separate block, ready to copy and paste. The corrections will cover spelling, grammar, syntax, punctuation, and stylistic suggestions.

Frequently Asked Questions

Which Mistral model should I choose for text correction?

For French text correction, Mistral Large delivers the best results thanks to its deep understanding of grammatical and stylistic nuances. Mistral Medium offers a good compromise between quality and speed for everyday texts. Mistral Small may suffice for simple spelling corrections, but it might miss complex syntax errors or stylistic subtleties. If you're using the API, Mistral Large is recommended for important documents.

Can Mistral correct a long text without losing quality?

Mistral handles texts of moderate length (up to 2,000–3,000 words) well, with no noticeable drop in quality. For longer texts, it's best to divide them into logical sections (chapters, thematic paragraphs) and submit them separately. This allows the model to stay focused on each segment and avoid omissions. Remember to provide the text's overall context at the start of each section so Mistral maintains terminological consistency.

How can I stop Mistral from rewriting my text instead of just correcting it?

The key is to be explicit in your prompt: specify that you only want corrections, not a rewrite. Add instructions like "preserve the author's tone and style," "only rephrase grammatically incorrect sentences," or "flag stylistic suggestions separately without applying them." If Mistral still changes your text too much, you can also ask it to categorize its interventions into "mandatory corrections" and "optional suggestions" so you retain control over the final result.