# PixVerse API vs Seedance on BytePlus ModelArk

> Seedance on BytePlus ModelArk scores 59.3 (C) to PixVerse's 42.4 (E) for video generation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark
- Markdown: https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark.md (~2,600 tokens)
- Slim: https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/pixverse-vs-seedance-on-byteplus-modelark.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Seedance on BytePlus ModelArk scores 59.3 (C) on agent readiness against PixVerse API's 42.4 (E), and leads in every scored category. Both do video generation.

- PixVerse API: grade E, 42.4/100, rank #893 of 950. Markdown https://www.anchorterminal.com/tools/pixverse.md · JSON https://www.anchorterminal.com/api/v1/tools/pixverse.json
- Seedance on BytePlus ModelArk: grade C, 59.3/100, rank #553 of 950. 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 91 video comparisons: https://www.anchorterminal.com/compare/video-generation/index.md

## Which one, for what

### PixVerse API (E)

Good for: Agents doing many short edits (restyle, swap, lip sync, sound effects) on a budget.

Also in its favour:
- Runs on your own machine

Watch for: Plan prices and the dollar value of a credit sit on a JavaScript-only billing page

### 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 70
- Security & auth, 79 against 28
- Payments & pricing, 20 against 10
- Maintenance & community, 75 against 52
- Transparency & trust, 63 against 45

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 | PixVerse API | Seedance on BytePlus ModelArk | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 35 | 36 | Seedance on BytePlus ModelArk +1 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 58 | 61 | Seedance on BytePlus ModelArk +3 |
| Agent ergonomics | 13% (16.2 this run) | 70 | 85 | Seedance on BytePlus ModelArk +15 |
| Security & auth | 14% (17.5 this run) | 28 | 79 | Seedance on BytePlus ModelArk +51 |
| Payments & pricing | 10% (12.5 this run) | 10 | 20 | Seedance on BytePlus ModelArk +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 52 | 75 | Seedance on BytePlus ModelArk +23 |
| Transparency & trust | 7% (8.8 this run) | 45 | 63 | Seedance on BytePlus ModelArk +18 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **42.4 · E** | **59.3 · C** | |

## Facts side by side

| Fact | PixVerse API | Seedance on BytePlus ModelArk |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | PixVerse | BytePlus |
| Hosted endpoint | `https://app-api.pixverse.ai/openapi/v2` | `https://ark.ap-southeast.bytepluses.com/api/v3` |
| Transports | HTTP, stdio | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | none | 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 | 2026-09-24 | 2026-09-17 |
| Terms last updated | 2026-09-04 | couldn't be read |
| Privacy policy last updated | 2026-05-07 | couldn't be read |
| Customer content may train models | yes, with an opt-out | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**PixVerse API.** V6 at about $0.04 a second at 720p, with audio and clips up to 15 seconds. Plan prices and the dollar value of a credit sit on a JavaScript-only billing page.

**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

### PixVerse API

1. Generate a new UUID for Ai-trace-id on every new submit. Reuse it only to fetch the same job again
2. Poll the result endpoint. Status 1 is done, 5 generating, 7 moderation failure, 8 failed
3. Moderate prompts before calling. Repeated status 7 results can suspend the key
4. Use model v6 or c1 for new work. Older model tables still sit in the docs

### 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, PixVerse API or Seedance on BytePlus ModelArk?

Seedance on BytePlus ModelArk scores 59.3 (C) on agent readiness against PixVerse API's 42.4 (E), and leads in every scored category.

### Do PixVerse API and Seedance on BytePlus ModelArk need an API key?

Both need an API key.

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

Yes. PixVerse API has a hosted endpoint at https://app-api.pixverse.ai/openapi/v2 and Seedance on BytePlus ModelArk at https://ark.ap-southeast.bytepluses.com/api/v3.


## For agents

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

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