Hedra vs Krea vs Runway vs Sync.so
A side-by-side look at Hedra, Krea, Runway and Sync.so for filmmakers: what each one can do, what it costs, and where they actually differ.
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Character video AI: a portrait plus audio becomes a directed talking or acting performance
- Price
- From $20/mo (Basic, 2,000 credits); Pro $50/mo; Ultra $100/mo; Teams $75/mo; Enterprise custom
- Learning
- Easy
- Best for
- Talking-character explainers and spokesperson videos from a single portrait
-
Multi-model AI canvas, agent and API for images, video and upscaling
- Price
- Basic $9/mo; Pro $35/mo ($21 yearly); Business $200/mo ($160 yearly); see the vendor's pricing page for other plans
- Learning
- Moderate
- Best for
- Pre-visualization: moodboards, look development and concept stills for a shoot
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Gen-4.5 video, Aleph 2.0 video editing and an agent that builds whole ad campaigns
- Price
- Free (125 one-time credits); Standard $15/mo ($12/mo billed annually)
- Learning
- Easy
- Best for
- Previs and shot tests with Gen-4.5 before committing to a shoot
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Lip sync, dubbing and image-to-talking-video for footage you already shot
- Price
- Free (3 gens/month, 20s max); Hobbyist $5/mo; Creator $19/mo; per-second usage on top (sync-3 $0.107 to $0.133/sec by plan)
- Learning
- Easy
- Best for
- Redubbing a finished spot or doc for several language markets
The short version
Where they differ
- Sync.so is the only one without AI agent.
- Sync.so is the only one without text to image.
- Sync.so is the only one without text to video.
All 4 offer: image to video, public API, free tier.
Feature by feature
Hedra vs Krea vs Runway vs Sync.so: capabilities
| Hedra | Krea | Runway | Sync.so | |
|---|---|---|---|---|
| Price | From $20/mo (Basic, 2,000 credits); Pro $50/mo; Ultra $100/mo; Teams $75/mo; Enterprise custom | Basic $9/mo; Pro $35/mo ($21 yearly); Business $200/mo ($160 yearly); see the vendor's pricing page for other plans | Free (125 one-time credits); Standard $15/mo ($12/mo billed annually) | Free (3 gens/month, 20s max); Hobbyist $5/mo; Creator $19/mo; per-second usage on top (sync-3 $0.107 to $0.133/sec by plan) |
| Infinite canvas | Yes | Yes | Not confirmed | No |
| Node / flow builder | Not confirmed | Yes | Yes | No |
| AI agent | Yes | Yes | Yes | No |
| Chat assistant | Yes | Yes | Yes | Partial |
| Team collaboration | Yes | Yes | Yes | Partial |
| Text to image | Yes | Yes | Yes | No |
| Image editing | Partial | Yes | Yes | No |
| Text to video | Yes | Yes | Yes | No |
| Image to video | Yes | Yes | Yes | Yes |
| Video to video | Partial | Partial | Yes | Yes |
| Native audio in video | Yes | Yes | Partial | No |
| Lip-sync | Yes | Not confirmed | Not confirmed | Yes |
| Voice / TTS | Not confirmed | Yes | Yes | Yes |
| Music & SFX | Not confirmed | Yes | Yes | No |
| Upscaling | Not confirmed | Yes | Yes | No |
| Character consistency | Yes | Partial | Partial | Partial |
| Camera control | Yes | Not confirmed | Not confirmed | No |
| Custom training | Not confirmed | Yes | Partial | No |
| Third-party models | Yes | Yes | Yes | Partial |
| Public API | Yes | Yes | Yes | Yes |
| MCP server | Yes | Not confirmed | Yes | Yes |
| Mobile app | Not confirmed | Not confirmed | Yes | Not confirmed |
| Open source | No | Partial | No | No |
| Free tier | Yes | Yes | Yes | Yes |
| Commercial use | Yes | Yes | Not confirmed | Not confirmed |
Each column comes from that tool's own researched page. "Not confirmed" means the vendor doesn't say.
Plans
Pricing compared
Hedra
| Free | $0monthly |
|---|---|
| Basic | $20monthly |
| Pro | $50monthly |
| Teams | $75monthly |
| Ultra | $100monthly |
| Enterprise | Customcustom |
Krea
| Free | $0monthly |
|---|---|
| Basic | $9monthly or yearly |
| Pro | $35 list / $21 yearlymonthly or yearly |
| Business | $200 list / $160 yearlymonthly or yearly |
| Enterprise | Customcustom |
Runway
| Free | $0none |
|---|---|
| Standard | $15monthly |
| Pro | $35monthly |
| Max | $95monthly |
Sync.so
| Free | $0monthly |
|---|---|
| Hobbyist | $5monthly |
| Creator | $19monthly |
| Growth | $49monthly |
| Scale | $249monthly |
| Enterprise | Customannual |
The verdict
Which one should you pick?
Hedra
Pick it for
- Talking-character explainers and spokesperson videos from a single portrait
- UGC-style ads and product walkthroughs with an illustrated or AI-generated presenter
- Music videos and animated shorts where a character must sing or talk on camera
Stands out
- Built for character performance first: one portrait plus audio gives lip-sync, expression and gesture, and it works on illustrated characters as well as photos.
- Character-3 clips run up to 10 minutes per generation, far longer than most single-shot video models, and are priced per second at 2.5c (540p), 5c (720p) or 6.25c (1080p).
Watch out
- Output tops out at 1080p on Character-3 and Omnia, below 4K-capable rivals
- Credits expire monthly and do not roll over, according to third-party reviews
Krea
Pick it for
- Pre-visualization: moodboards, look development and concept stills for a shoot
- Producers who want Seedance, Nano Banana and ChatGPT Image in one account instead of three subscriptions
- Motion designers generating short hero clips with a reference image and a generated soundtrack
Stands out
- One compute balance covers Krea's own models plus third-party image and video models (Seedance 2.5, Nano Banana Pro, ChatGPT Image 2, Kling, Topaz), so you do not need a separate subscription per model.
- Canvas, node workflows and the Krea Agent sit in the same product, so a brief can be run as a chat or built as a visual graph.
Watch out
- Compute units are opaque: per-model costs are not published, so budgeting video is guesswork
- Native video is capped at 720p for Seedance 2.5; 1080p and 4K need Seedance 2.0
Runway
Pick it for
- Previs and shot tests with Gen-4.5 before committing to a shoot
- Fixing finished footage with Aleph 2.0, such as swapping backgrounds or wardrobe across a clip
- Agency ad and campaign work using Agent, Brand Kits and Projects
Stands out
- Gen-4.5 and Aleph 2.0 sit in one credit pool with third-party models such as Kling 3.0, Seedance 2.5, Wan 3.0 and Nano Banana Pro, so you can compare models without separate subscriptions.
- Aleph 2.0 edits existing footage rather than generating new clips, which keeps the rest of a shot stable.
Watch out
- Credits burn fast: about 12 credits per second for Gen-4.5 and about 28 for Aleph 2.0
- Single generations run about 10 seconds, so longer scenes need stitching
Sync.so
Pick it for
- Redubbing a finished spot or doc for several language markets
- Fixing a flubbed line or matching new VO to an existing take
- Lip syncing an AI-generated or photo-based character to a recorded performance
Stands out
- Lipsync is the whole product: it works on footage you already shot, so you don't regenerate the performance or the shot.
- sync-3 is stated to output up to 4K at 60fps, and the model handles multiple speakers by identifying who is talking before syncing the face.
Watch out
- Lipsync only: no generation, no shot creation, no soundtrack or music
- Free tier output is watermarked and capped at 20 seconds
Each column comes from that tool's own researched page, checked against vendor pricing and changelog pages (oldest check: ). Sources are listed on each tool's page.
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