Where machine translation works well
For internal reference, quick comprehension of incoming material, or low-stakes content, machine translation is fast and often good enough — modern AI translation tools have improved significantly for major language pairs like Portuguese and English.
Where the stakes change the calculus
Legal contracts, regulatory filings, financial disclosures, and anything that will be scrutinized, signed, or submitted to an authority benefit from human translation with independent review — the cost of an error in these documents is usually far higher than the cost of professional translation.
A blended approach
Many professional translation workflows now use machine translation as a first pass, followed by human review and editing — combining speed with the judgment and terminology consistency that automated tools still lack for nuanced or high-stakes content.
Key takeaways
- Machine translation suits low-stakes, internal, or reference content.
- High-stakes documents — legal, financial, regulatory — still benefit from human translation and review.
- A blended workflow (machine draft, human review) is increasingly common.
Need help with this?
Machine translation has improved a lot — but the right choice depends on what's at stake in the document.