Head-to-head comparison
Aegisub vs Captions
Two of the captioning tools podcasters reach for. Here's how they differ on pricing, features, audience, and the trade-offs that actually matter day-to-day.
Free, advanced subtitle editor with karaoke timing
Best for: Post-production subtitle work with precise timing and ASS karaoke styling
AI video editor that leans hard into avatars and automated end-to-end edits.
Best for: AI avatar videos
At a glance
The honest trade-offs
Aegisub
Pros
- Free and open source
- Unmatched ASS and karaoke styling control
- Active again in 2026 with portable builds
Watch-outs
- Dense UI with steep learning curve
- No built-in speech recognition
- Mac builds lag the Windows experience
Captions
Pros
- Custom AI avatars quick to produce
- End-to-end automation from script to clip
- Mobile-first product is genuinely usable
Watch-outs
- Captions no longer the main focus
- AI avatars look uncanny at long length
- Less suited to real podcast workflows
Which one should you pick?
Pick Aegisub if
You’re building around post-production subtitle work with precise timing and ass karaoke styling. Aegisub is the canonical open-source subtitle editor and still the right tool for ASS work — karaoke timing, fansub-grade styling, frame-accurate adjustments. The official repo woke up again in 2026 after years of slow activity, with portable 3.
Pick Captions if
You’re building around ai avatar videos. Captions has pivoted from a captions app into a full AI video platform with synthetic avatars at the center. For marketers and small businesses producing high volumes of talking-head videos without filming, it's compelling.
Also worth comparing
Or see all Aegisub alternatives.
Frequently asked
What does Aegisub do better than Captions?
Aegisub's standout is "Free and open source". Captions doesn't make that promise — it leans into "Custom AI avatars quick to produce" instead. If the first sentence describes your workflow, pick Aegisub; if the second does, pick Captions.
What are the trade-offs?
Aegisub: dense ui with steep learning curve. Captions: captions no longer the main focus. Whether either matters depends entirely on what you actually need — neither is a deal-breaker by itself.
Do they support the same platforms?
Aegisub works on Windows where Captions doesn't. Captions works on Web, iOS, Android where Aegisub doesn't. If you're on a specific OS or device, that may decide for you.
Can I use Aegisub and Captions together?
Both are captioning tools so most teams pick one. Some workflows do combine them — for example, using Aegisub for one show or episode type and Captions for another. Worth trying both free tiers before committing.