• ChatGPT
  • Gemini
  • Grok
  • DeepSeek
  • Claude
62+ models

Punctuation Checkfix commas and punctuation online

AI places commas, dashes, colons, and semicolons correctly according to Russian grammar rules. Paste your text — get a corrected version.

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62+ models in one place
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Ready-made prompts

Examples created by our users

5 840 texts created today

Why Moleculs.ai

A straightforward way to work with AI

What punctuation errors does AI fix?

Not sure if you need a comma there? AI checks your text against the rules and explains every correction.

  • Commas and Set-Off Phrases

    Correct comma placement around introductory words and participial phrases.

  • Dashes and Hyphens

    Correct use of dashes in compound sentences and explanatory clauses.

  • Colons and Semicolons

    Punctuation for lists, explanations and complex sentences.

  • Quotation Marks and Parentheses

    Correct formatting of quotes, titles and parenthetical notes.

  • Dialogue

    Formatting dialogue and quotes according to punctuation rules.

  • Check the Whole Document

    Upload the full text - the AI checks every sentence.

All of it in one window. Pick a task, write a short prompt, and get a draft you can quickly shape into exactly what you need.

How Moleculai checks punctuation

  1. Step 01

    Paste your text

    From a single sentence to a whole document.

    Paste your text
  2. Step 02

    Ask it to add punctuation

    Say you need punctuation fixed to standard rules.

    Ask it to add punctuation
  3. Step 03

    Get the punctuated text

    The AI returns a version with commas and dashes placed correctly.

    Get the punctuated text
  4. Step 04

    Walk through the tricky spots

    Ask it to explain why a mark belongs exactly there.

    Walk through the tricky spots

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