> ## Documentation Index
> Fetch the complete documentation index at: https://docs.apisale.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Veo 3.1 Standard — First Last Frame To Video
> Google Veo 3.1 cinematic text/image-to-video with native audio; standard/Fast/Lite tiers. Optimized for first-last frame to video via apisale.
## Overview
Google Veo 3.1 cinematic text/image-to-video with native audio; standard/Fast/Lite tiers. Optimized for first-last frame to video via apisale.
**Docs** = API contract + Try it (snapshot). **[Explore](https://apisale.ai/explore)** = browser playground. **[Model page](https://apisale.ai/models/google/veo-3.1/first-last-frame-to-video)** = product examples.
## Endpoint
```http theme={null}
POST https://api.apisale.ai/v1/run/google/veo-3.1/first-last-frame-to-video
```
| | |
| -------------- | ------------------------------------------------------- |
| **Model slug** | `google/veo-3.1/first-last-frame-to-video` |
| **Category** | First-Last Frame to Video (`first-last-frame-to-video`) |
| **Lab** | Google |
| **Tier** | Standard |
| **Mode** | async |
## Pricing
**From \$0.140/sec**
apisale price is **30%** below the vendor's official list price.
| Tier | Unit | Official price | apisale price |
| ------------------------------------ | ------ | -------------- | ------------- |
| 14af1070-8326-4d35-af5b-810c5f5b80eb | second | \$0.200 | \$0.140 |
| 61b827a4-fda6-45e3-900a-3950c9753d5b | second | \$0.400 | \$0.280 |
| 42f584db-34c1-442b-957a-7782ba4310b2 | second | \$0.200 | \$0.140 |
| 1b1310e2-4efd-414a-9e2c-4d93af25b497 | second | \$0.400 | \$0.280 |
| f892a520-529f-4a9e-b62f-d6eef4a85d97 | second | \$0.400 | \$0.280 |
| 45a88b37-2a88-4669-b631-3a4cc255b34c | second | \$0.600 | \$0.420 |
**Official price** = vendor list price. **apisale price** = what you pay through apisale.
## Request
```json theme={null}
{
"input": {
"prompt": "Seamless cinematic transition from the first frame to the last frame, natural motion interpolation, consistent lighting",
"duration": "4s",
"resolution": "720p",
"aspect_ratio": "16:9",
"generate_audio": false,
"safety_tolerance": "4",
"last_frame_url": "https://assets.apisale.ai/temp/2026/07/17/475424e9-4578-45cc-b0bf-bf3f991c18b1.png",
"first_frame_url": "https://assets.apisale.ai/temp/2026/07/17/088eac17-83e2-418d-aaa6-60e92fbdedc3.png"
}
}
```
### Parameters
Fields marked \* are required. Use `Authorization: Key YOUR_API_KEY` for REST.
Optional random seed for reproducibility.
Text prompt for video generation. Maximum 4000 characters.
—
Default: `8s` Values: `4s`, `6s`, `8s`
Default: `720p` Values: `720p`, `1080p`, `4k`
Default: `auto` Values: `auto`, `16:9`, `9:16`
Default: `true`
Last frame image URL (JPEG/PNG/WebP).
First frame image URL (JPEG/PNG/WebP).
Negative prompt. Maximum 2000 characters.
Default: `4` Values: `1`, `2`, `3`, `4`, `5`, `6`
Optional HTTPS webhook when the run reaches a terminal state.
Block until completion (same Run response shape).
```json expandable theme={null}
{
"params": {
"seed": {
"type": "int",
"description": "Optional random seed for reproducibility."
},
"prompt": {
"type": "string",
"required": true,
"max_length": 4000,
"description": "Text prompt for video generation. Maximum 4000 characters."
},
"auto_fix": {
"type": "bool"
},
"duration": {
"type": "enum",
"values": [
"4s",
"6s",
"8s"
],
"default": "8s"
},
"resolution": {
"type": "enum",
"values": [
"720p",
"1080p",
"4k"
],
"default": "720p"
},
"aspect_ratio": {
"type": "enum",
"values": [
"auto",
"16:9",
"9:16"
],
"default": "auto"
},
"generate_audio": {
"type": "bool",
"default": true
},
"last_frame_url": {
"type": "media",
"required": true,
"description": "Last frame image URL (JPEG/PNG/WebP)."
},
"first_frame_url": {
"type": "media",
"required": true,
"description": "First frame image URL (JPEG/PNG/WebP)."
},
"negative_prompt": {
"type": "string",
"max_length": 2000,
"description": "Negative prompt. Maximum 2000 characters."
},
"safety_tolerance": {
"type": "enum",
"values": [
"1",
"2",
"3",
"4",
"5",
"6"
],
"default": "4"
}
}
}
```
## Submit response
Returns a **Run** with `run_id`. Poll with [GET /v1/runs/\{run\_id}](/model-apis/poll-runs) or use **Try it** above.
Unique run ID — save for polling and webhooks.
`queued` (async) or terminal state for sync runs.
Result when `status` is `succeeded` — see **Output schema** below.
### Example (async submit)
```json theme={null}
{
"run_id": "run_550e8400-e29b-41d4-a716-446655440000",
"endpoint": "google/veo-3.1/first-last-frame-to-video",
"model": "first-last-frame-to-video",
"capability": "video",
"mode": "first-last-frame-to-video",
"status": "queued",
"output": null,
"error": null,
"billing": null,
"created_at": "2026-06-27T12:00:00.000Z",
"started_at": null,
"completed_at": null,
"elapsed_ms": null
}
```
Full lifecycle: [Runs lifecycle](/model-apis/runs-lifecycle).
## Output
When `status` is `succeeded`, `output` follows this schema:
```json expandable theme={null}
{
"type": "object",
"example": {
"videos": [
{
"url": "https://cdn.mountsea.ai/tasks/ms-example/0.mp4"
}
]
},
"required": [
"videos"
],
"properties": {
"videos": {
"type": "array",
"items": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"format": "uri"
}
}
}
}
},
"description": "Succeeded task output: single video URL."
}
```
## Example
```bash theme={null}
curl -X POST "https://api.apisale.ai/v1/run/google/veo-3.1/first-last-frame-to-video" \
-H "Authorization: Key YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"input": {
"prompt": "Seamless cinematic transition from the first frame to the last frame, natural motion interpolation, consistent lighting",
"duration": "4s",
"resolution": "720p",
"aspect_ratio": "16:9",
"generate_audio": false,
"safety_tolerance": "4",
"last_frame_url": "https://assets.apisale.ai/temp/2026/07/17/475424e9-4578-45cc-b0bf-bf3f991c18b1.png",
"first_frame_url": "https://assets.apisale.ai/temp/2026/07/17/088eac17-83e2-418d-aaa6-60e92fbdedc3.png"
}
}'
```
## Related
* [Veo 3.1 Fast — First Last Frame To Video](/api/video/google/veo-3.1/fast/first-last-frame-to-video)
* [Veo 3.1 Lite — First Last Frame To Video](/api/video/google/veo-3.1/lite/first-last-frame-to-video)
* [Runs lifecycle](/model-apis/runs-lifecycle)
* [Video API overview](/api/video)
* [Account API](/get-started/account-and-monitoring)
## OpenAPI
````yaml openapi-catalog.json POST /v1/run/google/veo-3.1/first-last-frame-to-video
openapi: 3.0.3
info:
title: apisale Model Catalog
version: '2026-09-01T09:47:50.773Z'
description: Per-model OpenAPI operations for Mintlify Try playground.
servers:
- url: https://api.apisale.ai
security: []
paths:
/v1/run/google/veo-3.1/first-last-frame-to-video:
post:
tags:
- Model catalog
- video
- Google
summary: Create Veo 3.1 Standard — First Last Frame To Video
description: >-
Google Veo 3.1 cinematic text/image-to-video with native audio;
standard/Fast/Lite tiers. Optimized for first-last frame to video via
apisale.
operationId: submit-google-veo-3-1-first-last-frame-to-video
requestBody:
required: true
content:
application/json:
schema:
type: object
required:
- input
properties:
input:
type: object
properties:
seed:
description: Optional random seed for reproducibility.
type: number
prompt:
description: >-
Text prompt for video generation. Maximum 4000
characters.
type: string
auto_fix:
type: boolean
duration:
type: string
enum:
- 4s
- 6s
- 8s
default: 8s
resolution:
type: string
enum:
- 720p
- 1080p
- 4k
default: 720p
aspect_ratio:
type: string
enum:
- auto
- '16:9'
- '9:16'
default: auto
generate_audio:
type: boolean
default: true
last_frame_url:
description: Last frame image URL (JPEG/PNG/WebP).
type: string
format: uri
first_frame_url:
description: First frame image URL (JPEG/PNG/WebP).
type: string
format: uri
negative_prompt:
description: Negative prompt. Maximum 2000 characters.
type: string
safety_tolerance:
type: string
enum:
- '1'
- '2'
- '3'
- '4'
- '5'
- '6'
default: '4'
required:
- prompt
- last_frame_url
- first_frame_url
example:
prompt: >-
Seamless cinematic transition from the first frame to the
last frame, natural motion interpolation, consistent
lighting
duration: 4s
resolution: 720p
aspect_ratio: '16:9'
generate_audio: false
safety_tolerance: '4'
last_frame_url: >-
https://assets.apisale.ai/temp/2026/07/17/475424e9-4578-45cc-b0bf-bf3f991c18b1.png
first_frame_url: >-
https://assets.apisale.ai/temp/2026/07/17/088eac17-83e2-418d-aaa6-60e92fbdedc3.png
webhook_url:
type: string
format: uri
sync:
type: boolean
default: false
example:
input:
prompt: >-
Seamless cinematic transition from the first frame to the last
frame, natural motion interpolation, consistent lighting
duration: 4s
resolution: 720p
aspect_ratio: '16:9'
generate_audio: false
safety_tolerance: '4'
last_frame_url: >-
https://assets.apisale.ai/temp/2026/07/17/475424e9-4578-45cc-b0bf-bf3f991c18b1.png
first_frame_url: >-
https://assets.apisale.ai/temp/2026/07/17/088eac17-83e2-418d-aaa6-60e92fbdedc3.png
responses:
'201':
description: Run accepted
content:
application/json:
schema:
$ref: '#/components/schemas/RunObject'
security:
- ApiKeyAuth: []
components:
schemas:
RunObject:
type: object
required:
- run_id
- endpoint
- model
- capability
- mode
- status
- created_at
properties:
run_id:
type: string
description: Unique run identifier
endpoint:
type: string
description: Model slug
model:
type: string
capability:
type: string
mode:
type: string
status:
type: string
enum:
- queued
- processing
- succeeded
- failed
- timeout
- cancelled
output:
type: object
nullable: true
error:
type: object
nullable: true
properties:
type:
type: string
description: Machine-readable error code
code:
type: number
description: HTTP status
message:
type: string
billing:
type: object
nullable: true
properties:
amount:
type: string
currency:
type: string
enum:
- usd
created_at:
type: string
format: date-time
started_at:
type: string
format: date-time
nullable: true
completed_at:
type: string
format: date-time
nullable: true
elapsed_ms:
type: number
nullable: true
securitySchemes:
ApiKeyAuth:
type: apiKey
in: header
name: Authorization
description: Key sk-... (native REST) or Bearer sk-... (vendor SDKs)
````