Fluen AI Subtitle Generator
Ranked in AI Video Caption Generators ·Free plan· paid from $21.58/mo
About
Fluen AI Subtitle Generator turns uploaded audio and video into timed subtitles, offers an editor and exports subtitle files or captioned video. Inputs include MP4, MOV, MKV, AVI, MP3, WAV, M4A and FLAC. Editing includes millisecond-precise timeline changes, speaker labels, filler-word removal and custom glossaries; detected voices can be renamed or reassigned. Fluen translates captions into more than 50 languages with context-aware formatting and language-specific re-segmentation. Export options include SRT, WebVTT, TTML, SBV, ITT, EBU STL, SSA, plain text and burned-in MP4. It supports batch processing, shared project workspaces, a REST API, outbound webhooks and Zapier connections to more than 9,000 apps. The free plan allows three files up to 90 minutes each and does not require a credit card, but exporting subtitles or video requires a paid plan. Premium costs $259.00 per year; Team costs $499.00 per year. Assets are retained for 30 days on Free, 90 days on Premium and 180 days on Team.
Who it is for
Fluen lists content creators, podcasters, media and post-production teams, agencies, language service providers, e-learning and corporate communications among its audiences. Teams needing API access, integrations or shared review workflows may find its listed capabilities relevant.
What is good
- Accepts common video and audio formats
- Exports multiple subtitle formats and captioned MP4
- REST API, webhooks and Zapier connections
- Shared workspaces include permissions, reviews and notes
- Free trial requires no credit card
What to know first
- Free tier exports require a paid plan
- Free files are limited to 90 minutes each
- Premium costs $259.00 per year
- Team costs $499.00 per year
Verdict
Fluen combines transcription, subtitle editing, translation and several export paths with API and app integrations. The free tier permits limited processing but not exports; paid annual plans list specific minute allowances and retention periods.
Compared on AI video caption generators
Facts
- Minute-Based Billing
- Fluen charges by the minute of subtitles produced, not by videos or file size.fluen.ai · 28 Sept 2026
- Free Trial Limit
- The free plan supports up to 3 files, with each file up to 90 minutes.fluen.ai · 28 Sept 2026
- Free Trial Card
- The free trial does not require a credit card.fluen.ai · 28 Sept 2026
- Free Translation Limit
- Free users can translate each file into up to 3 languages and see the first 15 minutes of each translation.fluen.ai · 28 Sept 2026
- Paid Export Requirement
- Subtitle and video exporting require a paid plan on the free tier.fluen.ai · 28 Sept 2026
- Upload Formats
- Supported inputs include MP4, MOV, MKV, AVI, MP3, WAV, M4A, and FLAC.fluen.ai · 28 Sept 2026
- Speaker Detection
- The system detects distinct voices and supports renaming, reassignment, dash markers, or disabling detection.fluen.ai · 28 Sept 2026
- Translation Languages
- Captions can be translated into more than 50 languages with context-aware formatting.fluen.ai · 28 Sept 2026
- Caption Accuracy
- Fluen reports accuracy of up to 99.2%.fluen.ai · 28 Sept 2026
- Batch Processing
- Multiple files can be uploaded and processed in the background.fluen.ai · 28 Sept 2026
- Zapier Integration
- Zapier connects Fluen with more than 9,000 apps.fluen.ai · 28 Sept 2026
- REST API Access
- Programmatic access is available through a REST API and outbound webhooks.fluen.ai · 28 Sept 2026
- Premiere Pro Plugin
- A Premiere Pro plugin provides captions and translation inside the edit.fluen.ai · 28 Sept 2026
- Shared Workspaces
- Team members can access shared project files with permissions, reviews, approvals, and notes.fluen.ai · 28 Sept 2026
- Media Privacy
- Media is private to the account, and a Data Processing Agreement is available on request.fluen.ai · 28 Sept 2026
- Media Retention
- Media retention is 30 days for Free, 90 days for Premium, and 180 days for Team.fluen.ai · 28 Sept 2026
- Support Response
- Priority support is typically provided within one business day.fluen.ai · 28 Sept 2026
- Core function
- Fluen turns uploaded video or audio into timed subtitles, provides a built-in editor, and exports subtitle files or captioned video.fluen.ai · 28 Sept 2026
- Languages and accuracy
- The site reports 50+ supported languages, 1,500,000+ minutes processed, and a 99.2% accuracy rate.fluen.ai · 28 Sept 2026
- Multi-engine transcription
- Fluen routes each file to the speech engine it considers best for the content type, language, and audio quality.fluen.ai · 28 Sept 2026
- Subtitle editing
- The editor supports millisecond-precise timeline editing, natural segmentation, speaker labels, filler-word removal, and custom glossaries.fluen.ai · 28 Sept 2026
- Translation
- Fluen translates subtitles into 50+ languages with context-aware translation and language-specific re-segmentation.fluen.ai · 28 Sept 2026
- Exports
- Exports include SRT, WebVTT, TTML, SBV, ITT, EBU STL, SSA, burned-in MP4, and plain text.fluen.ai · 28 Sept 2026
- Integrations
- Fluen connects to more than 9,000 apps through Zapier and offers REST API access with outbound webhooks.fluen.ai · 28 Sept 2026
- Premiere Pro
- The free Premiere Pro plugin supports Premiere Pro 25.6 and newer on macOS and Windows; captioning uploads sequence audio rather than footage.fluen.ai · 28 Sept 2026
- Input limits
- Paid plans have no stated file-length or file-size restriction on the pricing page, while Free files are limited to 90 minutes each.fluen.ai · 28 Sept 2026
- Privacy
- Fluen says media is private to the account and offers a Data Processing Agreement on request.fluen.ai · 28 Sept 2026
- Data retention
- Free assets are stored for 30 days and Premium assets for 90 days, while subtitle tracks remain accessible indefinitely after asset removal.fluen.ai · 28 Sept 2026
- Review sharing
- Users can create optional public review links for individual tracks that expire after 72 hours.fluen.ai · 28 Sept 2026
- Target users
- Fluen lists content creators, podcasters, media and post-production teams, agencies and LSPs, e-learning, and corporate communications as audiences.fluen.ai · 28 Sept 2026
- Support
- Support is primarily by email; the terms say paid-plan responses typically target 24–48 business hours and support operates Monday to Friday, 10 am–4 pm CET.fluen.ai · 28 Sept 2026
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Where it ranks on Inferse
Sources
- fluen.ai/help/how-pricing-works· checked 28 Sept 2026
- fluen.ai/pricing· checked 28 Sept 2026
- fluen.ai/subtitle-generator· checked 28 Sept 2026
- fluen.ai/features/output· checked 28 Sept 2026
- fluen.ai/premiere-pro-plugin· checked 28 Sept 2026
- fluen.ai/faq· checked 28 Sept 2026
- fluen.ai/terms· checked 28 Sept 2026