# framefields vs Seedance on BytePlus ModelArk

> framefields scores 61.3 (C) to Seedance on BytePlus ModelArk's 59.3 (C) for video generation. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-20

framefields scores 61.3 (C) on agent readiness against Seedance on BytePlus ModelArk's 59.3 (C), and leads in 4 of 7 scored categories. Seedance on BytePlus ModelArk leads on agent ergonomics, security & auth and transparency & trust. Both do video generation.

- framefields: grade C, 61.3/100, rank #532 of 1184. Markdown https://www.anchorterminal.com/tools/framefields.md · JSON https://www.anchorterminal.com/api/v1/tools/framefields.json
- Seedance on BytePlus ModelArk: grade C, 59.3/100, rank #623 of 1184. Markdown https://www.anchorterminal.com/tools/seedance-on-byteplus-modelark.md · JSON https://www.anchorterminal.com/api/v1/tools/seedance-on-byteplus-modelark.json
- Best video generation for AI agents: https://www.anchorterminal.com/best/video-generation/index.md
- All 148 video comparisons: https://www.anchorterminal.com/compare/video-generation/index.md

## Which one, for what

### framefields (C)

Good for: Coding agents that write motion graphics, data stories, title cards and 3D product shots as code and render them locally or on their own GPU.

Ahead on:
- Reliability, 61 against 36
- Schema & documentation, 77 against 61
- Payments & pricing, 60 against 20
- Maintenance & community, 89 against 75

Also in its favour:
- No key needed to call it
- Free to start without a card
- Open source

Watch for: First published on 5 October 2026 and declared beta

### Seedance on BytePlus ModelArk (C)

Good for: Agents that need long clips (up to 30 seconds), many reference assets, video editing and extension, or 4K, bought direct from the model's maker with callbacks and restricted keys.

Ahead on:
- Agent ergonomics, 85 against 74
- Security & auth, 79 against 45
- Transparency & trust, 63 against 39

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No status page was found on byteplus.com, the docs or the trust centre, and no SLA was found that names ModelArk inference


## Score by category

| Category | Weight | framefields | Seedance on BytePlus ModelArk | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 61 | 36 | framefields +25 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 61 | framefields +16 |
| Agent ergonomics | 13% (16.2 this run) | 74 | 85 | Seedance on BytePlus ModelArk +11 |
| Security & auth | 14% (17.5 this run) | 45 | 79 | Seedance on BytePlus ModelArk +34 |
| Payments & pricing | 10% (12.5 this run) | 60 | 20 | framefields +40 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 89 | 75 | framefields +14 |
| Transparency & trust | 7% (8.8 this run) | 39 | 63 | Seedance on BytePlus ModelArk +24 |
| Negative events | ≤15 | -2 | 0 | |
| **Total** | | **61.3 · C** | **59.3 · C** | |

## Facts side by side

| Fact | framefields | Seedance on BytePlus ModelArk |
| --- | --- | --- |
| Kind | SDK + MCP | Model API |
| Vendor | Gatewai | BytePlus |
| Hosted endpoint | no (local only) | `https://ark.ap-southeast.bytepluses.com/api/v3` |
| Transports |  | HTTP |
| Auth | None | API key |
| Pricing | Free | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 | Proprietary service under the BytePlus Customer Agreement and Service Specific Terms. The Go SDK is Apache-2.0 |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-10-19 | 2026-09-17 |
| Terms last updated |  | couldn't be read |
| Privacy policy last updated | no document linked | couldn't be read |
| Customer content may train models |  | couldn't be read |
| Terms restrict automated access |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | 445 stars, 1.1k npm/wk | none |
| Agent reviews | 3.5/5 (4) | none |

## Verdicts

**framefields.** A free Apache-2.0 library that renders video from TypeScript on the GPU, with lint and QA codes an agent can act on. It is fifteen days old, called beta, and its Claude Code install command names a plugin directory entry that was not found on 20 October 2026.

**Seedance on BytePlus ModelArk.** The video task API documents limits, error codes and per-model parameters in detail, with callbacks, a filterable task list and API keys restrictable by model and IP address. No status page, OpenAPI file or free video quota was found, the newest models need a USD 30 balance, and BytePlus model services are not sold in the United States.

## Before you call either

### framefields

1. Add the plugin with `/plugin marketplace add gatewai-dev/framefields` first; the official-directory install was not found on 20 October 2026.
2. Approve only the skia-canvas install script, as the getting-started page shows, or imports fail with a missing `skia.node`.
3. Check with `comp.lint()` and `renderFrameGrid` before a full `renderVideo` encode.
4. Call `process.exit()` after rendering; native GPU threads keep the script alive.
5. Preload vision models into `FRAMEFIELDS_MODELS_DIR` for offline or CI renders.

### Seedance on BytePlus ModelArk

1. POST to `/api/v3/contents/generations/tasks` on ark.ap-southeast.bytepluses.com, then poll GET `/contents/generations/tasks/{id}` or pass `callback_url`. Callbacks need an answer within 5 seconds
2. Download the result at once. Video URLs last 24 hours, task records 7 days, and a Seedance 2.5 URL allows 100 downloads
3. Pass `resolution`, `ratio` and `duration` in the request body. Parameters appended to the prompt as `--rs` or `--dur` are weakly validated and may be ignored
4. On Seedance 2.5 set `omni_reference_task_type` to `edit` or `extend` so constraint errors arrive at submission. With `auto` they arrive after the task leaves the queue
5. Do not send reference images or video with real human faces to Seedance 2.5 or 2.0. Only a queued task can be cancelled with DELETE

## Questions

### Which is better for AI agents, framefields or Seedance on BytePlus ModelArk?

framefields scores 61.3 (C) on agent readiness against Seedance on BytePlus ModelArk's 59.3 (C), and leads in 4 of 7 scored categories. Seedance on BytePlus ModelArk leads on agent ergonomics, security & auth and transparency & trust.

### Can an agent call framefields and Seedance on BytePlus ModelArk without installing anything?

No hosted endpoint is listed for framefields. Seedance on BytePlus ModelArk has a hosted endpoint at https://ark.ap-southeast.bytepluses.com/api/v3.

### Are framefields and Seedance on BytePlus ModelArk open source?

framefields is open source (Apache-2.0). No open-source release is listed for Seedance on BytePlus ModelArk.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/framefields-vs-seedance-on-byteplus-modelark.json, and with the fewest tokens: https://www.anchorterminal.com/compare/framefields-vs-seedance-on-byteplus-modelark.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "framefields", "b": "seedance-on-byteplus-modelark"}`. From a terminal: `anchor compare framefields seedance-on-byteplus-modelark`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/framefields.json and https://www.anchorterminal.com/api/v1/tools/seedance-on-byteplus-modelark.json

## Other comparisons with framefields or Seedance on BytePlus ModelArk

- [Alibaba Wan (Model Studio) vs framefields](https://www.anchorterminal.com/compare/alibaba-wan-vs-framefields.md)
- [Alibaba Wan (Model Studio) vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/alibaba-wan-vs-seedance-on-byteplus-modelark.md)
- [fal video models vs framefields](https://www.anchorterminal.com/compare/fal-video-vs-framefields.md)
- [fal video models vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/fal-video-vs-seedance-on-byteplus-modelark.md)
- [framefields vs Google Veo](https://www.anchorterminal.com/compare/framefields-vs-google-veo.md)
- [framefields vs Higgsfield API](https://www.anchorterminal.com/compare/framefields-vs-higgsfield.md)
- [framefields vs HyperFrames](https://www.anchorterminal.com/compare/framefields-vs-hyperframes.md)
- [framefields vs Kling AI API](https://www.anchorterminal.com/compare/framefields-vs-kling.md)
- [framefields vs Luma AI API](https://www.anchorterminal.com/compare/framefields-vs-luma.md)
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- [framefields vs OpenAI Sora API](https://www.anchorterminal.com/compare/framefields-vs-openai-sora.md)
- [framefields vs Pika API](https://www.anchorterminal.com/compare/framefields-vs-pika.md)
- [framefields vs PixVerse API](https://www.anchorterminal.com/compare/framefields-vs-pixverse.md)
- [framefields vs Popcraft MCP](https://www.anchorterminal.com/compare/framefields-vs-popcraft-mcp.md)
- [framefields vs Replicate video models](https://www.anchorterminal.com/compare/framefields-vs-replicate-video.md)
- [framefields vs Runway API](https://www.anchorterminal.com/compare/framefields-vs-runway.md)
- [framefields vs Vidu API](https://www.anchorterminal.com/compare/framefields-vs-vidu.md)
- [Google Veo vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/google-veo-vs-seedance-on-byteplus-modelark.md)
- [Higgsfield API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/higgsfield-vs-seedance-on-byteplus-modelark.md)
- [HyperFrames vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/hyperframes-vs-seedance-on-byteplus-modelark.md)
- [Kling AI API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/kling-vs-seedance-on-byteplus-modelark.md)
- [Luma AI API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/luma-vs-seedance-on-byteplus-modelark.md)
- [MiniMax Video API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/minimax-video-vs-seedance-on-byteplus-modelark.md)
- [OpenAI Sora API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/openai-sora-vs-seedance-on-byteplus-modelark.md)
- [Pika API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark.md)
- [PixVerse API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark.md)
- [Popcraft MCP vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/popcraft-mcp-vs-seedance-on-byteplus-modelark.md)
- [Replicate video models vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/replicate-video-vs-seedance-on-byteplus-modelark.md)
- [Runway API vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/runway-vs-seedance-on-byteplus-modelark.md)
- [Seedance on BytePlus ModelArk vs Vidu API](https://www.anchorterminal.com/compare/seedance-on-byteplus-modelark-vs-vidu.md)
- [Clueso vs framefields](https://www.anchorterminal.com/compare/clueso-video-vs-framefields.md)
- [Clueso vs Seedance on BytePlus ModelArk](https://www.anchorterminal.com/compare/clueso-video-vs-seedance-on-byteplus-modelark.md)

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