Flux vs Krea vs LetzAI vs Runway
A side-by-side look at Flux, Krea, LetzAI and Runway for filmmakers: what each one can do, what it costs, and where they actually differ.
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Image model family for accurate text and photoreal stills, plus FLUX 3 video with native audio
- Price
- Pay per image on the API, from $0.014 (FLUX.2 klein 4B). Open weights are free for non-commercial use; commercial open-weights licences are quoted by sales.
- Learning
- Moderate
- Best for
- Key art and concept frames where legible text in the image matters
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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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Canvas for AI filmmakers: storyboard, generate multi-model shots, cut and share previews.
- Price
- From EUR 8.25/mo billed yearly (EUR 99/yr, Beginner); Canvas needs a paid plan
- Learning
- Easy
- Best for
- Storyboards and animatics for pitch decks, shot by shot
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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
The short version
Where they differ
- Flux is the only one without AI agent.
- Flux is the only one without chat assistant.
- Flux is the only one without third-party models.
All 4 offer: text to image, text to video, image to video, upscaling, public API.
Feature by feature
Flux vs Krea vs LetzAI vs Runway: capabilities
| Flux | Krea | LetzAI | Runway | |
|---|---|---|---|---|
| Price | Pay per image on the API, from $0.014 (FLUX.2 klein 4B). Open weights are free for non-commercial use; commercial open-weights licences are quoted by sales. | Basic $9/mo; Pro $35/mo ($21 yearly); Business $200/mo ($160 yearly); see the vendor's pricing page for other plans | From EUR 8.25/mo billed yearly (EUR 99/yr, Beginner); Canvas needs a paid plan | Free (125 one-time credits); Standard $15/mo ($12/mo billed annually) |
| Infinite canvas | No | Yes | Yes | Not confirmed |
| Node / flow builder | No | Yes | Partial | Yes |
| AI agent | No | Yes | Yes | Yes |
| Chat assistant | No | Yes | Yes | Yes |
| Team collaboration | Not confirmed | Yes | Yes | Yes |
| Text to image | Yes | Yes | Yes | Yes |
| Image editing | Yes | Yes | Partial | Yes |
| Text to video | Yes | Yes | Yes | Yes |
| Image to video | Yes | Yes | Yes | Yes |
| Video to video | Partial | Partial | Partial | Yes |
| Native audio in video | Yes | Yes | Partial | Partial |
| Lip-sync | Yes | Not confirmed | Not confirmed | Not confirmed |
| Voice / TTS | Partial | Yes | Not confirmed | Yes |
| Music & SFX | Partial | Yes | Not confirmed | Yes |
| Upscaling | Yes | Yes | Yes | Yes |
| Character consistency | Partial | Partial | Not confirmed | Partial |
| Camera control | Partial | Not confirmed | Partial | Not confirmed |
| Custom training | Yes | Yes | Partial | Partial |
| Third-party models | No | Yes | Yes | Yes |
| Public API | Yes | Yes | Yes | Yes |
| MCP server | Yes | Not confirmed | Not confirmed | Yes |
| Mobile app | Not confirmed | Not confirmed | Not confirmed | Yes |
| Desktop / local | Yes | Not confirmed | No | No |
| Open source | Partial | Partial | No | No |
| Free tier | Partial | Yes | Partial | Yes |
| Commercial use | Partial | 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
Flux
| Open weights, non-commercial | Freeone-time download |
|---|---|
| API pay-as-you-go | From $0.014 per imagepay-per-image |
| Builder (open-weights licence) | Contact saleslicence |
| Platform (open-weights licence) | Contact saleslicence |
| Professional (open-weights licence) | Contact saleslicence |
| Enterprise | Contact salescustom |
Krea
| Free | $0monthly |
|---|---|
| Basic | $9monthly or yearly |
| Pro | $35 list / $21 yearlymonthly or yearly |
| Business | $200 list / $160 yearlymonthly or yearly |
| Enterprise | Customcustom |
LetzAI
| Beginner | EUR 8.25/moyearly (EUR 99/yr) |
|---|---|
| Fun | EUR 20.75/moyearly (EUR 249/yr) |
| Pro | EUR 62.42/moyearly (EUR 749/yr) |
| Ultra | EUR 165.83/moyearly (EUR 1,990/yr) |
| Enterprise Basic | EUR 416.67/moyearly (EUR 5,000/yr) |
| Enterprise Plus | EUR 1,250/moyearly (EUR 15,000/yr) |
Runway
| Free | $0none |
|---|---|
| Standard | $15monthly |
| Pro | $35monthly |
| Max | $95monthly |
The verdict
Which one should you pick?
Flux
Pick it for
- Key art and concept frames where legible text in the image matters
- Environment plates and set-design variations at 2K or 4K, priced per megapixel
- Studios that want open weights and custom LoRAs running locally in ComfyUI
Stands out
- Open weights: FLUX.2 [dev] and the klein models can be downloaded, self-hosted and fine-tuned, with LoRA rights on the licensed tiers. Midjourney is closed.
- Pay per image with no subscription: FLUX.2 [klein] 4B from $0.014 per image, FLUX.2 [pro] from $0.03. Midjourney and Adobe Firefly sell monthly plans.
Watch out
- Video is new. FLUX 3 Video availability and FLUX 3 Image early access have been described differently across sources, and video pricing is not published
- Open-weights models are non-commercial by default, and commercial use needs a licence quoted by sales
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
LetzAI
Pick it for
- Storyboards and animatics for pitch decks, shot by shot
- Testing one shot across several video models on the same board before committing credits
- Agency client review with preview links and comments
Stands out
- One workspace for storyboard, generation, shot-by-shot video animation and client previews, with no export step between tools
- Multi-model access in one subscription: 40 active base models on the models page, including Seedance 2.5, Kling V3, Veo 3.1, Flux and Nano Banana
Watch out
- Canvas and the assistant need a paid plan, and assistant chat draws from the credit balance
- Credits are non-refundable and generation prices can change without notice
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
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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