# Katechon Arc

> Create AI short dramas and video ads from an idea, script, novel, or product brief. Direct characters, storyboards, video, and voice in one studio. Plans from $12.90/month.

Katechon Arc is an AI video creation studio for short dramas, narrative videos, and video ads. It connects script planning, character and product references, storyboards, video generation, voiceover, and film export in one workspace, guided by an AI agent.

Katechon Arc is made by Katechon (https://katechon.technology/). Web app: https://arc.katechon.technology/app/ (sign-in required). Every page below has a Markdown version: append `.md` to its URL (the home page is https://arc.katechon.technology/index.md), or request it with `Accept: text/markdown`.

## When to use Katechon Arc

- Stories that run across many shots or episodes with the same characters and locations.
- Adapting existing writing — a novel, a script, a treatment — rather than prompting clip by clip.
- Product ads where the product has to look like itself in every shot.
- Teams that want to review a script and storyboard before spending on video.

## When another tool may fit better

- A single standalone clip from one prompt: a plain text-to-video tool is quicker.
- Real-time talking avatars or live video: Arc renders finished shots, not live streams.
- Frame-accurate editing of existing footage: use a video editor; Arc can export a Jianying draft to one.

## Product

- [Home](https://arc.katechon.technology/): product overview, workflow, styles, pricing and FAQ
- [Pricing](https://arc.katechon.technology/pricing): Katechon Arc plans from $12.90/month with 1,800 monthly credits. Compare Starter, Pro, Ultra and Organization, credit top-ups from $15, and what credits cover.
- [How it works](https://arc.katechon.technology/how-it-works): The Katechon Arc production workflow: plan episodes, build reusable character and product references, storyboard each shot, generate video and voice, and export the film or a Jianying draft.
- [Models](https://arc.katechon.technology/models): Video and image models in Katechon Arc — Seedance 2.0, Seedance 2.0 Fast, Seedance 2.0 Mini, Seedream 5.0 Lite and Seedream 4.5 — with resolutions, clip lengths and credits per clip.

## Use cases

- [Use cases](https://arc.katechon.technology/use-cases): What Katechon Arc is built for: AI short dramas, novel adaptations, storyboards from scripts, product video ads and vertical 9:16 episodes.
- [AI short drama generator](https://arc.katechon.technology/use-cases/ai-short-drama-generator): Make AI short dramas with a recurring cast: plan episodes, write scripts, build character references, storyboard and generate each episode in Katechon Arc.
- [Novel to short drama](https://arc.katechon.technology/use-cases/novel-to-short-drama): Adapt a novel or long-form story into an episodic AI short drama: upload the text, plan episodes, review scripts and keep the cast consistent in Katechon Arc.
- [Script to storyboard](https://arc.katechon.technology/use-cases/script-to-storyboard): Turn a script into a shot-by-shot AI storyboard with consistent characters and locations, review it, then generate video only for the shots you approve, in Katechon Arc.
- [AI video ad generator](https://arc.katechon.technology/use-cases/ai-video-ad-generator): Make product video ads with AI: start from a creative brief and product photos, keep the product consistent with references, storyboard the hook and export portrait or landscape cuts in Katechon Arc.
- [Vertical 9:16 drama](https://arc.katechon.technology/use-cases/vertical-drama): Produce vertical 9:16 AI drama episodes for mobile feeds such as TikTok, Instagram Reels and YouTube Shorts, with hooks, a recurring cast and per-shot control in Katechon Arc.

## Films made with Katechon Arc

- [Films](https://arc.katechon.technology/films): 8 films and series the Katechon team made with Katechon Arc, 234 minutes in total, each with how it was made, the models used and where to watch it free.
- [The Wolf Mother](https://arc.katechon.technology/films/the-wolf-mother): A village herbwoman cast out into a blizzard is saved by a wolf pack and raises their dying runt as her son. Made with Katechon Arc; how it was made and where to watch.
- [RatKid and the Red Balloon](https://arc.katechon.technology/films/ratkid-and-the-red-balloon): A rat-boy aristocrat chases his runaway red balloon down a city built up the walls of a waterfall gorge. Made with Katechon Arc; how it was made and where to watch.
- [The Fall of Kalak](https://arc.katechon.technology/films/the-fall-of-kalak): A gladiator, a slave sorceress and a disgraced senator have ten days to kill a sorcerer-king before his ziggurat drains a city. Made with Katechon Arc; how it was made and where to watch.
- [Blood Sun: The Fall of Kratos](https://arc.katechon.technology/films/blood-sun): A gladiator champion and the gladiatrix he is forbidden to touch steal the one spear that can kill a sorcerer-king. Made with Katechon Arc; how it was made and where to watch.
- [The Emperor's Pleasure Court](https://arc.katechon.technology/films/the-emperors-pleasure-court): A barbarian fakes being a eunuch to stay inside the harem where the woman he crossed the desert for is held. Made with Katechon Arc; how it was made and where to watch.
- [High Note](https://arc.katechon.technology/films/high-note): A plus-size high-school senior with an opera voice stops hiding from the quarterback who keeps her as his secret. Made with Katechon Arc; how it was made and where to watch.
- [Dragon Rising](https://arc.katechon.technology/films/dragon-rising): A squad of heavy-armoured soldiers guarding a jungle mine finds out what the mine was digging up. Made with Katechon Arc; how it was made and where to watch.
- [BROODFALL](https://arc.katechon.technology/films/broodfall): A soldier who burns alien predators for a living walks into their circle unarmed. 16:9 film in 4 chapters made with Katechon Arc: how it was made, the models used and where to watch.

## Comparisons

- [Compare](https://arc.katechon.technology/compare): Sourced, dated comparisons of Katechon Arc with other AI video tools: what each does, what it costs and when to choose it. Every competitor claim links to its source.
- [Katechon Arc vs Higgsfield](https://arc.katechon.technology/compare/higgsfield): A sourced comparison of Katechon Arc and Higgsfield as of 2026-10: plans, video models, consistency, storyboards, series support and agent access, and when each fits.
- [Katechon Arc vs Runway](https://arc.katechon.technology/compare/runway): A sourced comparison of Katechon Arc and Runway as of 2026-10: plans, video models, consistency, storyboards, series support and agent access, and when each fits.
- [Katechon Arc vs Topview](https://arc.katechon.technology/compare/topview): A sourced comparison of Katechon Arc and Topview as of 2026-10: plans, video models, consistency, storyboards, series support and agent access, and when each fits.
- [Katechon Arc vs Hedra](https://arc.katechon.technology/compare/hedra): A sourced comparison of Katechon Arc and Hedra as of 2026-10: plans, video models, consistency, storyboards, series support and agent access, and when each fits.
- [Katechon Arc vs LTX Studio](https://arc.katechon.technology/compare/ltx-studio): A sourced comparison of Katechon Arc and LTX Studio as of 2026-10: plans, video models, consistency, storyboards, series support and agent access, and when each fits.
- [Katechon Arc vs Showrunner](https://arc.katechon.technology/compare/showrunner): A sourced comparison of Katechon Arc and Showrunner as of 2026-10: plans, video models, consistency, storyboards, series support and agent access, and when each fits.

## Data

- [AI video price index](https://arc.katechon.technology/ai-video-price-index): What AI video models cost per second at 720p and 1080p: 20 models quoted on 2026-10-17 from Atlas Cloud's list prices, with audio on and off, and Arc credits per second.

## Guides

- [Guides](https://arc.katechon.technology/guides): Practical guides for Katechon Arc: keeping AI characters consistent across episodes and estimating the credits a film will use.
- [Keep characters consistent](https://arc.katechon.technology/guides/consistent-characters): Why AI video characters drift between shots, and the reference-based workflow Arc uses to keep a cast, locations and products recognizable across a whole series.
- [Estimate credits for a film](https://arc.katechon.technology/guides/estimate-credits): A worked example of the credits one 60-second AI episode uses in Katechon Arc on Seedance 2.0 Mini, Seedance 2.0 Fast and Seedance 2.0, using the published per-clip and per-image rates.

## Tools

- [Free tools](https://arc.katechon.technology/tools): Free tools for planning AI video: price a clip, an episode or a 30-episode short drama on every major model before you generate anything.
- [AI video cost calculator](https://arc.katechon.technology/tools/ai-video-cost-calculator): Free AI video cost calculator: pick a model, resolution, clip length and episode count to get the USD list cost and Katechon Arc credits, from prices quoted 2026-10-17.

## Answers

Direct answers to common questions about making AI dramas, films and ads, with dated sources. Full text of every answer is in llms-full.txt.

- [Answers hub](https://arc.katechon.technology/answers): every answer, grouped by topic

- [How much does it cost to make an AI short drama?](https://arc.katechon.technology/answers/how-much-does-it-cost-to-make-an-ai-short-drama)
- [How much does it cost to make a feature-length AI movie?](https://arc.katechon.technology/answers/how-much-does-it-cost-to-make-an-ai-movie)
- [How much does AI video cost per second?](https://arc.katechon.technology/answers/how-much-does-ai-video-cost-per-second)
- [How much does Seedance 2.0 cost?](https://arc.katechon.technology/answers/how-much-does-seedance-2-0-cost)
- [How much does Veo 3.1 cost?](https://arc.katechon.technology/answers/how-much-does-veo-3-1-cost)
- [Is Kling 3.0 free, and what does it cost per second?](https://arc.katechon.technology/answers/is-kling-3-free)
- [Is Wan free to use?](https://arc.katechon.technology/answers/is-wan-free)
- [Is Sora 2 still available, and what are the alternatives?](https://arc.katechon.technology/answers/is-sora-2-still-available)
- [What is the cheapest AI video generator?](https://arc.katechon.technology/answers/what-is-the-cheapest-ai-video-generator)
- [How much does an AI video ad cost to make?](https://arc.katechon.technology/answers/how-much-does-an-ai-video-ad-cost)
- [How much does one finished minute of AI video cost?](https://arc.katechon.technology/answers/how-much-does-a-minute-of-ai-video-cost)
- [Which AI video generators have a free plan?](https://arc.katechon.technology/answers/which-ai-video-generators-have-a-free-plan)
- [Seedance 2.0 vs Kling 3.0: which is better for dialogue scenes?](https://arc.katechon.technology/answers/seedance-2-0-vs-kling-3-for-dialogue-scenes)
- [Seedance 2.0 vs Kling 3.0 vs Veo 3.1: which should you use?](https://arc.katechon.technology/answers/seedance-2-0-vs-kling-3-0-vs-veo-3-1)
- [Seedance 2.0 vs Seedance 2.0 Mini vs Fast: what is the difference?](https://arc.katechon.technology/answers/seedance-2-0-vs-seedance-2-0-mini-vs-fast)
- [Seedance 2.0 vs Seedance 2.5: is the upgrade worth the price?](https://arc.katechon.technology/answers/seedance-2-0-vs-seedance-2-5)
- [Veo 3.1 vs Veo 3.1 Fast vs Veo 3.1 Lite: which tier should you use?](https://arc.katechon.technology/answers/veo-3-1-vs-veo-3-1-fast-vs-lite)
- [Kling 3.0 Standard vs Pro vs Turbo: what is the difference?](https://arc.katechon.technology/answers/kling-3-standard-vs-pro-vs-turbo)
- [Wan 3.0 vs Seedance 2.5: how do they compare?](https://arc.katechon.technology/answers/wan-3-0-vs-seedance-2-5)
- [What is Seedance 2.0, and what is it good for?](https://arc.katechon.technology/answers/what-is-seedance-2-0)
- [What is Veo 3.1, and how do you use it?](https://arc.katechon.technology/answers/what-is-veo-3-1)
- [What is Kling 3.0, and what is it good for?](https://arc.katechon.technology/answers/what-is-kling-3)
- [Which AI video model is best for short dramas?](https://arc.katechon.technology/answers/best-ai-video-model-for-short-dramas)
- [How do you make an AI short drama?](https://arc.katechon.technology/answers/how-to-make-an-ai-short-drama)
- [How do you make a ReelShort-style series with AI?](https://arc.katechon.technology/answers/how-to-make-a-reelshort-style-series-with-ai)
- [What is an AI micro drama?](https://arc.katechon.technology/answers/what-is-an-ai-micro-drama)
- [How long should an AI short drama episode be?](https://arc.katechon.technology/answers/how-long-should-a-short-drama-episode-be)
- [How many episodes should an AI short drama have?](https://arc.katechon.technology/answers/how-many-episodes-should-an-ai-short-drama-have)
- [How do you write a short drama script for AI video?](https://arc.katechon.technology/answers/how-to-write-a-short-drama-script-for-ai)
- [Should an AI drama be vertical (9:16) or horizontal (16:9)?](https://arc.katechon.technology/answers/vertical-or-horizontal-for-ai-drama)
- [How do you make an AI animated or anime series?](https://arc.katechon.technology/answers/how-to-make-an-ai-animated-series)
- [Can you monetize AI-generated videos on YouTube?](https://arc.katechon.technology/answers/can-you-monetize-ai-videos-on-youtube)
- [Do you have to disclose AI-generated video on YouTube?](https://arc.katechon.technology/answers/do-you-have-to-disclose-ai-generated-video-on-youtube)
- [How do you publish an AI short drama on TikTok?](https://arc.katechon.technology/answers/how-to-publish-an-ai-short-drama-on-tiktok)
- [What is TikTok Minis?](https://arc.katechon.technology/answers/what-is-tiktok-minis)
- [How do you start an AI YouTube channel?](https://arc.katechon.technology/answers/how-to-start-an-ai-youtube-channel)
- [How do you make an AI movie?](https://arc.katechon.technology/answers/how-to-make-an-ai-movie)
- [How long does it take to make an AI movie?](https://arc.katechon.technology/answers/how-long-does-it-take-to-make-an-ai-movie)
- [How do you make an AI short film?](https://arc.katechon.technology/answers/how-to-make-an-ai-short-film)
- [How many AI clips does a film need?](https://arc.katechon.technology/answers/how-many-clips-does-an-ai-film-need)
- [How do you make a movie trailer with AI?](https://arc.katechon.technology/answers/how-to-make-an-ai-trailer)
- [How do you make an AI music video?](https://arc.katechon.technology/answers/how-to-make-an-ai-music-video)
- [How do you turn a book into a movie with AI?](https://arc.katechon.technology/answers/how-to-turn-a-book-into-a-movie-with-ai)
- [How do you turn a script into a video with AI?](https://arc.katechon.technology/answers/how-to-turn-a-script-into-a-video-with-ai)
- [How does text-to-video AI work?](https://arc.katechon.technology/answers/how-does-text-to-video-ai-work)
- [Text-to-video, image-to-video or reference-to-video: which should you use for a film?](https://arc.katechon.technology/answers/text-to-video-vs-image-to-video-vs-reference-to-video)
- [How do you write good prompts for AI video?](https://arc.katechon.technology/answers/how-to-write-prompts-for-ai-video)
- [What is the best AI storyboard generator?](https://arc.katechon.technology/answers/what-is-the-best-ai-storyboard-generator)
- [How do you make a storyboard from a script with AI?](https://arc.katechon.technology/answers/how-to-make-a-storyboard-from-a-script-with-ai)
- [Can AI turn a storyboard into a video?](https://arc.katechon.technology/answers/can-ai-turn-a-storyboard-into-a-video)
- [What is a grid storyboard in AI video?](https://arc.katechon.technology/answers/what-is-a-grid-storyboard)
- [How do you keep the same character across AI video clips?](https://arc.katechon.technology/answers/how-to-keep-the-same-character-in-ai-video)
- [Which AI video generator is best for consistent characters?](https://arc.katechon.technology/answers/which-ai-video-generator-is-best-for-consistent-characters)
- [How do you keep locations consistent in AI video?](https://arc.katechon.technology/answers/how-to-keep-locations-consistent-in-ai-video)
- [How do you keep costumes and props consistent in AI video?](https://arc.katechon.technology/answers/how-to-keep-costumes-and-props-consistent-in-ai-video)
- [What is the best AI video generator for short dramas?](https://arc.katechon.technology/answers/best-ai-video-generator-for-short-dramas)
- [What is the best AI movie maker?](https://arc.katechon.technology/answers/best-ai-movie-maker)
- [What is the best AI video generator for TikTok and YouTube Shorts?](https://arc.katechon.technology/answers/best-ai-video-generator-for-tiktok-and-youtube-shorts)
- [How long can an AI video be?](https://arc.katechon.technology/answers/how-long-can-an-ai-video-be)
- [What are the best Higgsfield alternatives?](https://arc.katechon.technology/answers/higgsfield-alternatives)
- [What are the best Runway alternatives?](https://arc.katechon.technology/answers/runway-alternatives)
- [What are the best LTX Studio alternatives?](https://arc.katechon.technology/answers/ltx-studio-alternatives)
- [What are the best Hedra alternatives?](https://arc.katechon.technology/answers/hedra-alternatives)
- [What are the best Showrunner alternatives?](https://arc.katechon.technology/answers/showrunner-alternatives)
- [How do you make a video ad with AI?](https://arc.katechon.technology/answers/how-to-make-an-ai-video-ad)
- [What is the best AI video ad generator?](https://arc.katechon.technology/answers/what-is-the-best-ai-video-ad-generator)
- [Do AI UGC ads work?](https://arc.katechon.technology/answers/do-ai-ugc-ads-work)
- [How do you make an AI product video from product photos?](https://arc.katechon.technology/answers/how-to-make-an-ai-product-video-from-photos)
- [How do you make an AI video from photos?](https://arc.katechon.technology/answers/how-to-make-an-ai-video-from-photos)
- [Which AI video tools have an MCP server?](https://arc.katechon.technology/answers/which-ai-video-tools-have-an-mcp-server)
- [What is an MCP server, and what does it do for AI video?](https://arc.katechon.technology/answers/what-is-an-mcp-server-for-ai-video)
- [How do you upscale AI video to 4K?](https://arc.katechon.technology/answers/how-to-upscale-ai-video-to-4k)
- [How do you add voice and dialogue to AI video?](https://arc.katechon.technology/answers/how-to-add-voice-and-dialogue-to-ai-video)
- [Why does AI video add voices or lines you did not write?](https://arc.katechon.technology/answers/why-does-ai-video-add-random-voices)
- [How do you add accurate captions to AI video?](https://arc.katechon.technology/answers/how-to-add-captions-to-ai-video)
- [How do you add music to an AI drama?](https://arc.katechon.technology/answers/how-to-add-music-to-an-ai-drama)
- [How do you make AI video look less like AI?](https://arc.katechon.technology/answers/how-to-make-ai-video-look-less-ai)
- [What goes wrong when you make an AI series?](https://arc.katechon.technology/answers/what-goes-wrong-when-making-an-ai-series)
- [Why do AI video generations fail or get blocked?](https://arc.katechon.technology/answers/why-do-ai-video-generations-fail-or-get-blocked)
- [What is a video token, and why does AI video cost so much?](https://arc.katechon.technology/answers/what-is-a-video-token)

## For agents and developers

- [MCP server](https://arc.katechon.technology/developers/mcp): Katechon Arc runs a remote MCP server at https://arc.katechon.technology/mcp/ with 38 tools for projects, scripts, references, storyboards, video and voice. Authenticate with a personal arc- API key.
- [Agent installation guide](https://arc.katechon.technology/agent-installation-guide.md): step-by-step instructions an AI agent can follow to connect to the Katechon Arc MCP server with a personal API key

## Subscriptions (USD)

- Starter: $12.90/month; 1,800 credits monthly. Annual: $118.80, paid upfront; same monthly credit allowance.
- Pro: $49.90/month; 10,000 credits monthly. Annual: $478.80, paid upfront; same monthly credit allowance.
- Ultra: $129.90/month; 27,000 credits monthly. Annual: $1,198.80, paid upfront; same monthly credit allowance.
- Organization: $199/month; 42,000 credits monthly. Five members including owner. Monthly billing only.
- Top-up: 2,000 credits for $15; never expire.
- Top-up: 5,000 credits for $35; never expire.
- Top-up: 10,000 credits for $65; never expire.
- Top-up: 20,000 credits for $130; never expire.

Prices in USD; applicable taxes are shown at checkout. Annual plans are paid upfront, with credits released monthly. Plan credits expire at the end of their monthly window. Generation costs vary by model, duration, and settings.

## Questions and answers

### What is Katechon Arc?

Katechon Arc is an AI video creation studio for short dramas, narrative videos, and video ads. It connects script planning, character and product references, storyboards, video generation, voiceover, and film export in one workspace, guided by an AI agent.

### Do I need a finished script or editing experience?

You can start with an idea, a novel, a script, or product materials. The agent helps you develop the production step by step. You can review and change the script, references, and storyboard before generating video.

### Can I create product ads as well as short dramas?

Yes. Drama projects develop stories into scenes and episodes. Ad projects start with a creative brief and product assets. Both use the same production workflow for visual references, storyboards, generated clips, and a final film.

### How do characters and products stay consistent?

Arc reuses visual references for characters, scenes, props, and products throughout the workflow. This gives generated shots a shared foundation. AI results can still vary; review the outputs and regenerate individual shots when needed.

### How do subscription credits work?

Each plan provides a monthly credit allowance. Credits cover model usage across the creative workflow, and the amount used depends on the model and generation settings. Annual plans release credits each month. Unused plan credits expire at the end of that monthly window; purchased top-up credits never expire.

### How much does it cost to make a video?

There is no fixed credit cost per finished film. The model, number of shots, clip duration, resolution, voiceover, and revisions all affect usage. Check the estimates and your credit balance in the studio before generating. Plan allowances are a creative budget, not a guaranteed number of videos.

### Can I cancel my subscription?

You can manage your subscription in the billing portal from your account. Cancellation stops future renewals; paid credit windows retain their original expiry dates. Review the billing portal for the effective date and any plan-change charges before confirming.

### What can I export?

Download your assembled film or export a Jianying draft to continue editing. Projects can use portrait or landscape formats, depending on the selected model and settings. CapCut compatibility has not been verified.

### Can my team work on a project together?

Yes. The Organization plan includes five members, including the owner, and 42,000 monthly credits shared by organization-funded projects. Personal projects can also invite collaborators; in those projects, each collaborator uses their own credits.

### Does it work on mobile and desktop?

The studio runs in your browser on mobile and desktop. Start ideas and review your projects on a phone; a larger screen gives you more room for detailed storyboard and production work.

## Optional

- [Full text of every page](https://arc.katechon.technology/llms-full.txt)
- [Sitemap](https://arc.katechon.technology/sitemap.xml)
- [Privacy policy](https://arc.katechon.technology/privacy)
- [Terms of service](https://arc.katechon.technology/terms)