> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zerotwo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported Languages

> ZeroTwo supports 11 languages for both the interface and AI responses.

ZeroTwo is built for a global audience. You can use ZeroTwo in 11 languages — your language setting affects both the interface text and ZeroTwo's default response language.

***

## Supported Languages

ZeroTwo currently supports the following 11 languages:

| Language           | Native Name | Code | RTL |
| ------------------ | ----------- | ---- | --- |
| English            | English     | en   | No  |
| Spanish            | Español     | es   | No  |
| French             | Français    | fr   | No  |
| German             | Deutsch     | de   | No  |
| Portuguese         | Português   | pt   | No  |
| Russian            | Русский     | ru   | No  |
| Arabic             | العربية     | ar   | Yes |
| Hebrew             | עברית       | he   | Yes |
| Hindi              | हिन्दी      | hi   | No  |
| Japanese           | 日本語         | ja   | No  |
| Chinese Simplified | 中文          | zh   | No  |

***

## How to Change Your Language

<Steps>
  <Step title="Open Settings">
    Click your avatar or the Settings icon to open the Settings dialog
  </Step>

  <Step title="Go to Personalization">
    Select the **Personalization** tab
  </Step>

  <Step title="Select Language">
    Find the **Language** dropdown and select your preferred language
  </Step>

  <Step title="Changes take effect immediately">
    The interface updates instantly. No page reload required.
  </Step>
</Steps>

***

## RTL (Right-to-Left) Support

Arabic and Hebrew are fully supported with **right-to-left layout rendering**. When you select Arabic or Hebrew as your language:

* The entire ZeroTwo interface mirrors to RTL layout
* Text input fields, menus, panels, and navigation all render correctly in RTL
* Canvas mode supports RTL text editing
* AI responses in Arabic and Hebrew render with proper RTL alignment

<Info>
  RTL support applies to the ZeroTwo interface. The behavior of embedded third-party content (e.g., web search sources) depends on those sources' own RTL support.
</Info>

***

## Response Language Behavior

Your language setting affects both the interface and ZeroTwo's default response language. Here's how it works in practice:

**When language is set to English:**

* The interface shows in English
* ZeroTwo responds in English by default

**When language is set to Spanish:**

* The interface shows in Spanish
* ZeroTwo responds in Spanish by default

**When you write in a different language than your setting:**
ZeroTwo typically responds in the language you **wrote in**, regardless of your setting. For example, if your setting is English but you write a message in French, ZeroTwo will usually reply in French.

**To force a specific response language:** include it explicitly in your prompt: "Respond in German", "Répondez en français", "日本語で答えてください"

***

## AI Model Language Support

Most major AI models support multilingual input and output. However, quality varies:

| Language Support Level       | Models / Notes                                         |
| ---------------------------- | ------------------------------------------------------ |
| Excellent (all major models) | English                                                |
| Very good                    | Spanish, French, German, Portuguese, Japanese, Chinese |
| Good                         | Arabic, Russian, Hindi                                 |
| Variable                     | Hebrew (quality depends on the specific model)         |

<Note>
  English typically gets the best results across all 95+ models. For other languages, results are generally excellent but may vary between models. Some models are specifically stronger in certain languages — for example, Qwen models excel at Chinese, Japanese, and Korean; DeepSeek models have strong Chinese language support.
</Note>

***

## Tips for Multilingual Use

<Tip>
  If you're working in multiple languages in the same session, you can **explicitly specify the language in each prompt** regardless of your global setting: "Answer this in Spanish:", "Translate to Japanese:", etc. This gives you precise per-message control.
</Tip>

**Choosing the right model for non-English languages:**

* **Chinese (Simplified):** Qwen Max, DeepSeek Chat, GLM 4.6 (ZAI)
* **Japanese:** Qwen Max, Claude Sonnet, GPT-4o
* **Arabic:** GPT-4o, Claude Sonnet
* **Hindi:** GPT-4o, Claude Sonnet, Gemini Pro
* **Russian:** GPT-4o, Claude Sonnet, Mistral Large

**For translation tasks:** any premium model handles translation well. GPT-4o and Claude Sonnet are particularly reliable for nuanced translation work.