Best AI Subtitle Translators, Compared Hands-On
We build subtitle software ourselves and test every tool here with the same real-world .srt files. Last updated 2026-07-19.
TL;DR: for personal use or a first draft, a free browser-based translator covers you. Pay for a tool when you need human review (Happy Scribe), AI dubbing with cloned voices (Rask AI, ElevenLabs), or burned-in styled captions (VEED, Submagic).
| Tool | Best for | Languages | Formats | Free tier |
|---|---|---|---|---|
| Happy Scribe | Accuracy-critical subtitles with optional human review | 80+ (translation), human review available | SRT, VTT, TXT, DOCX | Trial minutes |
| Maestra | Large language coverage, free SRT translator tool | 125+ (vendor claim) | SRT, VTT | Effectively none: signup grants ~0 usable credits (our account showed Total Credits Left: 0, couldn't finish a single 2-min file). Public MP3-to-text page gives a 1-min masked preview only, no export. Verified in-app 2026-07-22 |
| Rask AI | AI dubbing / full video localization with voice cloning | 130+ (vendor claim) | Video in/out, SRT | Trial |
| ElevenLabs | Voice quality in AI dubbing | 90+ dubbing (Dubbing v2, vendor claim), verified 2026-07-28 | Audio/Video, SRT export | $0/mo, 10k credits, but that is only 0.4 min of Dubbing v2 (~24 seconds). Free-tier dubs are watermarked automatically; v2 has no watermark-discount option. Verified 2026-07-28 |
| VEED | Editing video + subtitles in one browser timeline | 100+ (vendor claim) | SRT, VTT, TXT, Video | Free plan with watermark |
| Submagic | Styled captions for TikTok/Reels/Shorts | 100+ (vendor claim) | Video, SRT | Trial |
| Subly | Broad language coverage on a budget | 255 (vendor claim) | SRT, VTT, TXT | Trial |
| Kapwing | Editing subtitles inside a video timeline | 100+ (vendor claim) | SRT, VTT, Video | Free plan with limits |
Language counts are vendor claims; we verify real quality per language in individual reviews. Pricing changes often, so check the vendor page for current numbers.
Mini-verdicts
Happy Scribe
transcription-subtitles
Strong on transcription + subtitle export; human-made option is the differentiator. Visit Happy Scribe →
Maestra
transcription-subtitles
Transcription quality matched Happy Scribe in our test (0.91% WER on the clean-clip preview, same eyes/eye artifact). But free tier is a pure funnel: 0 usable credits after signup, whereas Happy Scribe's free tier gives 10 real exportable minutes. This access gap is the real differentiator, not accuracy. Visit Maestra →
Rask AI
dubbing-localization
High ticket: dubbing plans cost far more than subtitle-only tools. Visit Rask AI →
ElevenLabs
dubbing-localization
Best-known voice engine. Key economics finding: AI dubbing costs an order of magnitude more than subtitling: $2.23-4.91 per minute on Dubbing v2 vs ~$0.20/min for AI transcription elsewhere. A 2-minute clip quoted 54,000 credits, 5.4x the entire free monthly allowance. Unlike Maestra, the cost is shown before you confirm, so nothing is spent by surprise. Visit ElevenLabs →
VEED
video-editor
General-purpose editor; subtitle translation is one feature among many. Visit VEED →
Submagic
short-form-captions
Creator-oriented; animated caption styles. Visit Submagic →
Subly
transcription-subtitles
Language-count claim is the highest we have seen, so verify quality per language. Visit Subly →
Kapwing
video-editor
Frequently recommended for timeline-based subtitle editing. Visit Kapwing →
How we test
Every tool gets the same three files: a 20-minute tech tutorial (clean speech), a 15-minute two-person podcast (crosstalk), and a 5-minute short with slang. We score translation quality, timing fidelity, export formats and real price per finished minute. We build translation software ourselves, including a bilingual-subtitles browser extension, so we know where these tools cut corners. More on our process.
When you don't need to pay at all
If you already have an .srt file and just need it in another language for personal viewing, our free SRT translator does it in your browser with no upload and no quota. Paid tools earn their money on transcription from audio, human review, dubbing and styled captions, not on translating an existing subtitle file.
Disclosure: some links above are affiliate links. They never change our rankings: several top picks here pay us nothing.