AI Translation Overview

Supervertaler integrates with leading AI language models for high-quality translation.

Supported Providers

Provider	Models
OpenAI	GPT-5.5, GPT-5.4 Mini
Anthropic	Claude Sonnet 4.6, Claude Haiku 4.5, Claude Opus 4.7
Google	Gemini 3.1 Flash-Lite, Gemini 2.5 Pro, Gemini 3.1 Pro (Preview), Gemma 4 26B MoE
Mistral	Mistral Large, Mistral Small
DeepSeek	DeepSeek V4 Pro, DeepSeek V4 Flash
OpenRouter	200+ models via a single API key
Ollama	TranslateGemma, Qwen 3, Aya Expanse (local, free)
Custom	Any OpenAI-compatible endpoint

See Supported LLM Providers for setup instructions for each provider.

Quick Start

1. Set up API keys

2. Open a project with segments to translate

3. Select a segment

4. Press Ctrl+T to translate

Translation Methods

Single Segment

Translate one segment at a time:

• Select a segment

• Press Ctrl+T or click Translate button

• AI translation appears in the target cell

• Review, edit, and confirm

Batch Translation

Translate multiple segments at once:

• Select segments (Shift+click for range)

• Press Ctrl+Shift+T or use Edit → Batch Translate

• Configure options in the dialog

• All selected segments are translated

:::note Supervertaler has multiple batch scopes (selected / not-started / etc.). Start with Edit → Batch Translate → Translate all not-started & pre-translated. :::

TM + AI Hybrid

Combine Translation Memory with AI:

1. TM matches are checked first

2. High matches (e.g., >90%) are used directly

3. Lower matches are AI-translated with TM context

4. No matches use pure AI translation

Prompts

Prompts control how the AI translates. A good prompt includes:

• Translation direction (source → target language)

• Domain/subject matter

• Style guidelines

• Terminology rules

• Special instructions

Example Prompt

You are a professional Dutch-to-English translator specializing 
in technical documentation. 

Maintain formal register. Use American English spelling. 
Keep all formatting tags like {1}, <b>, </b> in place.

Translate naturally while preserving the original meaning.

See Creating Prompts and Prompt Manager for more.

Provider Selection

In Settings

1. Go to Settings tab

2. Find LLM Settings

3. Choose your preferred Provider and Model

4. Save settings

Per-Translation

When batch translating, you can choose the provider in the dialog.

Quality Tips

Get Better Results

1. Use specific prompts - Include domain, style, and rules

2. Provide context - Enable "include context" for surrounding segments

3. Add termbase terms - Attach terminology for consistent translations

4. Post-edit - AI is great but not perfect; always review

Common Issues

Issue	Solution
Wrong terminology	Add terms to termbase, include in prompt
Inconsistent style	Be more specific in your prompt
Tags removed/moved	Explicitly tell AI to preserve tags
Too literal	Ask for "natural, fluent" translation

Cost Management

API costs

Cloud providers typically charge by usage (tokens). Pricing and free tiers change over time, so treat each provider dashboard as the source of truth.

Reducing Costs

1. Use Ollama (local) when appropriate

2. Translate only what you need (for example not-started segments)

3. Pre-translate with TM when you have good matches

4. Use smaller/faster models for drafts, larger models for final passes

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Learn More

Single Segment

Translate one at a time →

Batch Translation

Translate in bulk →

Creating Prompts

Write effective prompts →

Local AI (Ollama)

Free, private AI →