Head-to-head comparison
Captions vs Subsai
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.
AI video editor that leans hard into avatars and automated end-to-end edits.
Best for: AI avatar videos
Whisper-powered subtitle tool with web UI and CLI
Best for: Self-hosters running Whisper locally for subtitle generation
At a glance
The honest trade-offs
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
Subsai
Pros
- Genuinely free and self-hosted
- Supports Whisper and faster-whisper variants
- Web UI, CLI, and Python package options
Watch-outs
- Requires technical setup
- Local GPU recommended for reasonable speed
- No styling or burn-in beyond basic export
Which one should you pick?
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.
Pick Subsai if
You’re building around self-hosters running whisper locally for subtitle generation. Subsai wraps Whisper and its faster variants into a usable subtitle generator with web UI, CLI, and Python package — the cleanest single project for running captioning locally without depending on cloud services. Active community, MIT-style license.
Also worth comparing
Or see all Captions alternatives.
Frequently asked
What does Captions do better than Subsai?
Captions's standout is "Custom AI avatars quick to produce". Subsai doesn't make that promise — it leans into "Genuinely free and self-hosted" instead. If the first sentence describes your workflow, pick Captions; if the second does, pick Subsai.
What are the trade-offs?
Captions: captions no longer the main focus. Subsai: requires technical setup. Whether either matters depends entirely on what you actually need — neither is a deal-breaker by itself.
Do they support the same platforms?
Captions works on Web, iOS, Android where Subsai doesn't. Subsai works on Windows where Captions doesn't. If you're on a specific OS or device, that may decide for you.
Can I use Captions and Subsai together?
Both are captioning tools so most teams pick one. Some workflows do combine them — for example, using Captions for one show or episode type and Subsai for another. Worth trying both free tiers before committing.