# Pika API vs Seedance on BytePlus ModelArk

> Seedance on BytePlus ModelArk scores 59.3 (C) to Pika's 47.3 (D) for video generation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark
- Markdown: https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark.md (~2,550 tokens)
- Slim: https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/pika-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 Pika API's 47.3 (D), and leads in 5 of 7 scored categories. Pika API leads on schema & documentation. Both do video generation.

- Pika API: grade D, 47.3/100, rank #835 of 950. Markdown https://www.anchorterminal.com/tools/pika.md · JSON https://www.anchorterminal.com/api/v1/tools/pika.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

### Pika API (D)

Good for: Agents that want one key and one schema across many video models, priced before each call, and Pika's own effects models.

Ahead on:
- Schema & documentation, 83 against 61

Watch for: $10 a month membership before any usage, and no free generation

### 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 80
- Security & auth, 79 against 33
- Maintenance & community, 75 against 20
- Transparency & trust, 63 against 43

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 | Pika 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) | 83 | 61 | Pika API +22 |
| Agent ergonomics | 13% (16.2 this run) | 80 | 85 | Seedance on BytePlus ModelArk +5 |
| Security & auth | 14% (17.5 this run) | 33 | 79 | Seedance on BytePlus ModelArk +46 |
| Payments & pricing | 10% (12.5 this run) | 20 | 20 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 20 | 75 | Seedance on BytePlus ModelArk +55 |
| Transparency & trust | 7% (8.8 this run) | 43 | 63 | Seedance on BytePlus ModelArk +20 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **47.3 · D** | **59.3 · C** | |

## Facts side by side

| Fact | Pika API | Seedance on BytePlus ModelArk |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Pika (Mellis, Inc.) | BytePlus |
| Hosted endpoint | `https://api.dev.pika.art` | `https://ark.ap-southeast.bytepluses.com/api/v3` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Paid | 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 | none | 2026-09-17 |
| Terms last updated | no date given | couldn't be read |
| Privacy policy last updated | no date given | couldn't be read |
| Customer content may train models | yes | 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 | yes | couldn't be read |
| Arbitration or class-action waiver | yes | couldn't be read |
| Agent reviews | 4/5 (2) | none |

## Verdicts

**Pika API.** Keyless catalogue with live prices and JSON input schemas for 162 operations. $10 a month membership before any usage, and no free generation.

**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

### Pika API

1. Call `GET /catalog/apis/{api_id}?expand=inputs` first. It's free and returns the path, schema and price
2. Check GET /billing/balance before a submit. A 403 can mean an inactive key or an empty balance
3. Send an Idempotency-Key on every submit, and a fresh one only when you change the body
4. Record cost from `billing.charge_micro_usd` only once `billing.state` is settled

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

Seedance on BytePlus ModelArk scores 59.3 (C) on agent readiness against Pika API's 47.3 (D), and leads in 5 of 7 scored categories. Pika API leads on schema & documentation.

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

Both need an API key.

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

Yes. Pika API has a hosted endpoint at https://api.dev.pika.art 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/pika-vs-seedance-on-byteplus-modelark.json, and with the fewest tokens: https://www.anchorterminal.com/compare/pika-vs-seedance-on-byteplus-modelark.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "pika", "b": "seedance-on-byteplus-modelark"}`. From a terminal: `anchor compare pika seedance-on-byteplus-modelark`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/pika.json and https://www.anchorterminal.com/api/v1/tools/seedance-on-byteplus-modelark.json

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