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 4.8
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 Translate → Batch Translate
• Configure options in the dialog
• All selected segments are translated

Note

Supervertaler has multiple batch scopes (selected / not-started / etc.). Start with Translate → 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 the ⚙️ Settings tab
2. Open 🤖 AI Settings
3. Choose your preferred provider under 🤖 LLM Provider Selection and the model under 📦 Model Selection

There is no Save button: the change is saved a moment after you make it.

Where to check which model is in use

The status bar shows the current model. Project → 📋 Project Info… lists it too, with its provider, at the top of the AI & Prompts section, and the Batch Translate dialog shows it as 📊 Current LLM.

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 (see Sending Terms to the AI)
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

Slightly garbled tags are repaired for you. Some models return a numbered inline tag a little wrong: < 1>, </ 1 >, <1 />, or HTML-escaped as <1>. Since v1.10.372, AI translations – batch, single-segment and FuzzyFixer – are repaired as they arrive, and each such tag is put back into its exact form instead of ending up in your target as plain text. Only tags that the source segment really contains are touched, so an ordinary < or > in the text is left alone. A tag pair left empty, with the words outside it, is not guessed at: the tag check still reports it.

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.

Supervertaler logs the tokens and cost of every AI call. The Batch Translate dialog shows an estimate before you start, and Project → 📋 Project Info… shows what the project has cost so far. See Token Usage & Costs.

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 →