Alconost MQM Annotation Tool

Alconost MQM Annotation Tool is a Content & Design tool that provides a free, secure, and offline-capable MQM annotation tool for translation quality evaluation. It supports TSV/JSONL, granular error categorization, and reporting.

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At a glance

Pricing

Free · Enterprise

Free tier

Yes

API

Yes

Skill level

Technical

About

What is Alconost MQM Annotation Tool?

The Alconost MQM Annotation Tool is a free, secure, and offline-capable solution for evaluating translation quality. It enables users to upload translation outputs, annotate errors according to MQM guidelines, and export structured annotations for detailed analysis. The tool supports granular error categorization, including Accuracy, Fluency, Terminology, and Style, with severities like Minor, Major, and Critical. It converts annotations into a Quality Score (%) by normalizing error penalties by translation length, ensuring consistent scoring across languages. The tool also offers reporting and analytics, including error distribution charts and session timing estimates, and supports API integration for automated import and export of data in formats like JSONL, TSV, and CSV.

Best used for

Ideal for localization providers, linguists, and product managers who need to evaluate human and machine translation quality, annotate errors according to MQM guidelines, and generate detailed quality reports. Especially valuable for those requiring a secure, offline-capable tool with API integration for automated workflows and granular error analysis.

Common actions

evaluate translation quality

annotate translation errors

analyze translation performance

automate quality assessment

techlanguagesAPI

Capabilities

Key features

MQM-based error annotation
Granular error categorization
Quality scoring & analytics
TSV/JSONL data support
API for import/export
Offline-capable

Target Audience

writercontent creatorproduct managerdeveloper

Integrations

Not yet documented

Pricing & Plans

Free · Enterprise

Not publicly disclosed. Check alconost.mt for current pricing.

FAQs

What is MQM and how does this tool utilize it?

MQM (Multidimensional Quality Metrics) is an error-based framework for translation quality evaluation. This tool allows users to annotate errors based on MQM guidelines, categorizing them by type (e.g., Accuracy, Fluency) and severity (Minor, Major, Critical) to provide a fine-grained, reproducible evaluation of translation quality.

How is the Quality Score calculated by the Alconost MQM Annotation Tool?

The tool calculates a Quality Score (%) by converting MQM annotations into a single score. It normalizes error penalties by translation length using XLM-R SentencePiece tokens. This ensures fair and consistent scoring across all languages, with adjustable error weights for Critical, Major, and Minor errors.

Can I integrate the MQM Annotation Tool into my existing localization workflow?

Yes, the tool offers a simple REST API for integration. You can programmatically create projects, upload content in TSV, CSV, JSONL, or raw JSON formats, and retrieve annotated data and metrics in standard formats like JSONL, TSV, and CSV, automating your localization quality workflow.

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