# Aleph 2.0 on Eden Gen

> Runway Aleph 2.0 is an in-context video editing model from Runway. It applies text instructions and keyframe-guided edits across existing footage while preserving details that are 

- Model id: `aleph-2`
- Kind: video
- Maker: Runway
- Best for: video
- Use for: Runway Aleph 2.0 is an in-context video editing model from Runway. It applies text instructions and keyframe-guided edits across existing footage while preserving details that are not meant to change....
- Speed: standard
- Features: Text to video

## Pricing

- 720p: $0.302 per second

Example: one 5 s take at 720p costs $1.51; four of them cost $6.05.
Prices are for the Solo plan on the best connected route today. POST /v1/estimate returns the exact price for your workspace before a take; that is the price charged.
Failed or blocked takes are refunded automatically. Prepaid credit expires 6 months after purchase and is not refundable.

## Parameters

- `resolution`: "720p" (default "720p")
- `duration` (seconds): 5, 8, 10 (default 5)
- `aspect_ratio`: "16:9", "9:16", "21:9", "1:1"
- `count`: 1, 2 or 4 takes per run
- `references`: no references. Each item is `{ "asset_id" | "url" | "take_id" | "element_id", "role": "reference" }`.
- `project_id`: the project the cost lands on (defaults to the key's project, then the newest one).
- `webhook_url`, `metadata`: optional.
- `tags`: up to 10 labels for usage reports, e.g. `{ "client": "acme", "campaign": "q4" }` (or header `X-Takes-Tags: client=acme,campaign=q4`).

Unsupported values return HTTP 400 with `param` and `supported` in the error, so you can correct and resend.

## Call it

```bash
curl -X POST https://edengen.ai/v1/takes \
  -H "Authorization: Bearer $TAKES_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Prefer: wait=60" \
  -d '{"model":"aleph-2","prompt":"Slow dolly in on a rain-soaked neon street at night, handheld feel, no music, no cut","resolution":"720p","duration":5,"aspect_ratio":"16:9"}'
```

Check the price first with `POST https://edengen.ai/v1/estimate` (same body). Poll `GET https://edengen.ai/v1/takes/{id}` or pass `webhook_url`.
Never resend a create to check progress: a new request is a new paid take unless it carries the same Idempotency-Key.

## More

- All models: https://edengen.ai/llms.txt
- OpenAPI: https://edengen.ai/v1/openapi.json
- MCP server (OAuth, no key needed): https://edengen.ai/mcp