Can Veo 3.1 Fast generate videos from a text description?

Yes. Veo 3.1 Fast lists text as an input and video as an output, so a text description is enough to start a generation.

Can Veo 3.1 Fast turn a still image into a video?

Yes. Veo 3.1 Fast accepts image input, so a still image can be used as the starting frame.

Can Veo 3.1 Fast use an existing video as a reference?

Yes. Veo 3.1 Fast accepts video input, so an existing clip can be supplied as a reference.

Can videos generated by Veo 3.1 Fast include sound?

Yes. Veo 3.1 Fast declares audio together with video in its output modalities, so generated clips can carry sound.

When was Veo 3.1 Fast released as a video generation model?

Veo 3.1 Fast was released on 2025-10-15.

How is video generation with Veo 3.1 Fast billed?

Video generation with Veo 3.1 Fast is billed per second at 0.12 USD, in batch mode. Different resolutions or durations can land on different rates.

Can Veo 3.1 Fast create portrait-oriented videos?

Yes. Veo 3.1 Fast lists portrait aspect ratios (9:16), so vertical video is supported.

Model detail

Veo 3.1 Fast

Provided by Google

Pay-as-you-go

Google's mid-tier video generation model balancing speed and quality. Veo 3.1 Fast generates high-quality video from text or image prompts with native synchronized audio, offering faster turnaround than Veo 3.1 at lower cost. Supports first-frame and last-frame conditioning, multiple resolutions and aspect ratios, and SynthID watermarking.

Model specs

Model ID: veo-3.1-fast-generate-preview

Context length: –
Max output: –
I/O modalities
Released: 2026-04

API endpoints

One MixRoute gateway, OpenAI-compatible

Gemini /v1beta/models/{model}:generateContent POST
OpenAI-compatible /v1/chat/completions POST

Pricing

Flat rate, unit: /1M Tokens

Input

$75.0000 /1M Tokens

Completion

$75.0000 /1M Tokens

Selection summary

Quickly judge whether it fits your workload

What is this model good for?

Google's mid-tier video generation model balancing speed and quality

What should you check before using it?

Check duration, resolution, and aspect ratio limits

Model type: video. Verify supported features and quotas with the provider documentation. Released 2025-10-15.

Why use it through MixRoute?

Swap the base URL, keep the Veo 3.1 Fast client

MixRoute serves Veo 3.1 Fast on the OpenAI-compatible endpoint /v1/chat/completions; point your existing client at https://api.mixroute.ai/v1 with the model ID veo-3.1-fast-generate-preview and re-run your integration tests.

Capabilities & compatibility

Unconfirmed capabilities stay "Unknown," no guesses

Vision input

Veo 3.1 Fast can process image inputs alongside text.

EX Pass a base64-encoded image in a image_url content part alongside text messages.

OpenAI SDK

Call Veo 3.1 Fast through MixRoute's OpenAI-compatible endpoint.

EX Change base_url to https://api.mixroute.ai/v1; everything else follows the OpenAI style.

Token cost estimator

Live estimate from this page's pricing, not an actual bill

Input tokens

Output tokens

Requests / month

Cache hit rate –

This model has no cache-read price; caching is not counted

FAQ

Veo 3.1 Fast is a video generation model from Google. It accepts text, image, video and returns video, audio.

Get started

01

Create an API key

Generate a key in the Console; one key calls every model.
02

Set the base URL

Fully OpenAI SDK-compatible; just swap the URL to connect.

https://api.mixroute.ai/v1
03

Specify the model ID

In the request's model field, enter:

veo-3.1-fast-generate-preview

Create an API key

New users get $5 in free credits

Test this model and alternate routes with the same request format

Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.

Create an API key View integration docs