HappyScribe vs Hello8: Which Subtitle Platform Delivers Real Quality?
Both platforms offer transcription and subtitles — but the approach to quality couldn't be more different. Here's an honest comparison to help you decide.
What is HappyScribe?
HappyScribe is a transcription and subtitle platform trusted by over 6 million users. It offers AI-powered transcription in 120+ languages with optional human proofreading, a meeting notetaker for Zoom, Meet, and Teams, and a web-based collaborative editor. It is a solid general-purpose tool for converting speech to text.
What is Hello8?
Hello8 is a subtitling and video localization platform built around its AI Reviewer. It transcribes and translates in 90+ languages and checks reading speed, timing and typography on every file. The AI Reviewer then reads each subtitle for grammar, translation and glossary mistakes and leaves comments you approve in one click.
At a Glance
A high-level overview before we get into the details.
Feature-by-Feature Comparison
A side-by-side look at what each platform offers for professional subtitle workflows.
AI that fixes your video. Not just answers questions.
Most platforms bolt on a chatbot that answers questions about your file. Hello8's AI watches your video, reads your subtitles, and tells you exactly what to fix — then lets you apply the fix in one click.
Passive AI (Q&A)
You type a prompt, you get a wall of text. The AI is completely disconnected from the subtitle editor.
- You have to know what to look for and write a prompt
- Returns a long list of suggestions in plain text, disconnected from the subtitles
- No way to apply fixes — you manually locate each subtitle and edit it yourself
Active AI (Hello8)
The AI reviews your entire subtitle file proactively. It posts comments directly on problematic subtitles — each with the exact issue and a proposed fix.
- AI scans your subtitle file and posts comments on each problematic subtitle
- Each comment pinpoints the exact issue (e.g. "Incorrect comma separating the subject from its verb") with a proposed solution
- Click "Apply" to fix instantly — or click any comment to jump to that subtitle in the editor
How it works
Problem detected
AI scans your video and subtitles for timing, accuracy, and style issues
AI analyzes
Full context review — audio, video, and subtitle tracks together
Suggestion ready
A specific fix is proposed with a clear explanation
One-click apply
Accept the fix instantly. No copy-pasting or manual edits
Subtitle Quality Assurance
Getting the transcription right is only half the job. Subtitles also need to meet reading speed, line length, and typographic standards.
HappyScribe: Per-Caption Warnings
HappyScribe flags individual captions that exceed configurable thresholds.
- Colour-coded warnings on individual captions that exceed CPS or CPL limits
- Configurable presets for different broadcast standards
- No bulk auto-fix or project-level overview of subtitle health
Hello8: Project-Level QA Dashboard
Hello8 treats subtitle quality as a system-wide concern, not a per-caption afterthought.
- Full CPS (characters per second) and CPL (characters per line) dashboard showing min, average, and max across the entire file
- OK / Warning / Alert breakdown so you see the overall health of your subtitle file at a glance
- One-click auto-fix that adjusts timing and splits long lines across the entire project
Why Teams Choose Hello8
Hello8 was purpose-built for professional subtitling and localization — not adapted from a general transcription tool.
AI + Optional Human Review
AI handles transcription and translation. Add human review when you need it — expert linguists refine accuracy, tone, and cultural context.
Subtitle-First Engineering
Hello8's editor is built around reading speed, timing precision, and typographic quality. CPS and CPL validation happen automatically — not as an afterthought.
Language-Specific QA
French guillemets, English curly quotes, German capitalization rules — Hello8 validates against the typographic standards of each target language.
90+ Languages, One Workflow
Transcription, translation, and subtitling all in one platform. No jumping between tools for different steps.
Enterprise-Grade Security
Encryption at rest and in transit, secure file handling, and data removal controls. Your content stays yours.
Dedicated Project Support
For large-scale projects, get a dedicated project manager, custom style guides, and SLA guarantees. Not just a self-serve platform.
Hello8 Is the Right Choice If You Need…
HappyScribe works well for quick transcription jobs. But if your subtitles will be seen by an audience, Hello8 is built for that standard.
Broadcast-ready subtitles that meet CPS and timing standards
Professional localization for documentaries, corporate videos, or marketing content
A single platform that handles transcription, translation, and subtitling
Consistent quality across 90+ languages with language-specific validation
An AI Reviewer that catches conjugation, grammar, and translation issues like a human would
Enterprise security and dedicated project management for large volumes
Frequently Asked Questions
Is HappyScribe cheaper than Hello8?
HappyScribe's AI-only transcription starts at $0.20/min with up to 85% accuracy. Hello8 targets higher accuracy with its AI Reviewer catching grammar, conjugation, and translation issues automatically. For projects where quality matters — and re-work costs more than getting it right the first time — Hello8 delivers better value.
Can HappyScribe do subtitle QA like Hello8?
HappyScribe focuses on transcription accuracy but doesn't include automated subtitle-specific QA. Hello8 validates reading speed (CPS), characters per line (CPL), and language-specific typographic rules on every subtitle file.
Does Hello8 support as many languages as HappyScribe?
HappyScribe supports 120+ languages for AI transcription. Hello8 supports 90+ languages with full transcription, translation, and subtitle validation — including language-specific QA rules for each target language.
Can I use Hello8 for meeting transcription?
Hello8 is optimized for video and media content — subtitles and professional translations. If you primarily need meeting notes and real-time transcription, HappyScribe or a dedicated meeting tool may be a better fit.
How does Hello8's human review work?
AI generates the initial transcription and translation. Hello8's AI Reviewer then checks for conjugation, grammar, translation, and hesitation issues, leaving comments you can approve in one click. For projects that need it, you can add human review as an option — expert linguists refine accuracy, tone, and cultural context.
More Comparisons
Further reading
Best Professional Subtitling Services in 2026
An honest comparison of 6 subtitling services for different use cases. From enterprise studios to independent filmmakers, here's how to choose.
Read articleAI Subtitle Review: How It Works and Why It Matters
Manual subtitle review takes 3-4x the video duration. Learn how AI review catches grammar, conjugation, and translation errors with one-click fixes.
Read articleUsing ChatGPT to review your subtitles. The trap.
ChatGPT, Claude, and Gemini can't check timing, reading speed, or translation accuracy. Here's what AI chatbots actually miss when you paste subtitles into a chat window.
Read article
Ready to See the Difference?
Book a call with our team and see how Hello8 delivers subtitles you don't have to fix.