Post-editing is the task of reviewing and correcting machine-translated text so it meets a required quality standard, rather than translating the source text from scratch.
Why Post-Editing Matters
Post-editing matters because it is the step that turns raw machine translation into publishable, professional-grade text. Machine translation alone can misread context, mistranslate specialized terminology, or produce phrasing that reads unnaturally; post-editing is where a trained linguist catches and fixes those problems before the content reaches its audience.
The translation industry recognizes two levels of post-editing, standardized under ISO 18587. Light post-editing fixes only major errors — mistranslations, omissions, factual mistakes — without polishing style, and suits content where a reader just needs the gist. Full post-editing goes further: the linguist also corrects style, tone, and fluency so the result reads as if it had been translated by a human from the start.
Post-editing is the general industry term for this review-and-correct step; MTPE (Machine Translation Post-Editing) is the same process named explicitly for machine translation output. Post-editing isn’t the only way to get a human-quality translation, though — the alternative is a linguist translating from the source text natively, with no AI draft to edit, then having that translation independently reviewed.
A Concrete Example
An online retailer translates 5,000 product descriptions from English into Italian using Taia’s AI translator. Before publishing them on its Italian storefront, the retailer sends the batch to Taia’s Essential tier. A professional Italian linguist post-edits the machine translation: correcting product-specific terms, fixing grammar the AI got wrong, and smoothing phrasing so descriptions read naturally to Italian shoppers — a full post-editing pass, not a light one.
How Post-Editing Works in Taia
Taia’s Essential tier is a full post-editing pass over the AI-generated draft by one professional linguist, not ISO 17100 certified. Taia’s Enhanced and Ultimate tiers work differently — a native translator works from the source text rather than editing an AI draft, with independent review (Enhanced) or independent review plus proofreading (Ultimate), and both are ISO 17100 certified. See professional translation services for tier-by-tier pricing and what each includes.