Google Gemini

Generate videos with Google’s Omni Flash and Veo 3.1 models

Generate videos using Google’s Omni Flash and Veo 3.1 models through the Gemini API.

from praisonaiagents import VideoAgent

agent = VideoAgent(llm="gemini/veo-3.1-generate-preview")
video = agent.start("A sunrise over mountains", output="sunrise.mp4")

Authentication

Set your Gemini API key before running.

export GOOGLE_API_KEY=your-key
# GEMINI_API_KEY also works

from praisonaiagents import VideoAgent

agent = VideoAgent(llm="gemini/veo-3.1-generate-preview")
video = agent.start("A city skyline at night", output="skyline.mp4")

Models

Three Veo 3.1 tiers cover cinematic quality down to cheap iteration.

Model	Description
gemini/gemini-omni-1.1-flash	Gemini Omni Flash — Google’s default video model
gemini/veo-3.1-generate-preview	Veo 3.1 Standard — cinematic quality
gemini/veo-3.1-fast-generate-preview	Veo 3.1 Fast — quicker, lower cost
gemini/veo-3.1-lite-generate-preview	Veo 3.1 Lite — cheapest iteration

Which Veo 3.1 tier should I pick?

Deprecated

Migrate to the veo-3.1 IDs above. These older models are being retired.

Model	Note
gemini/veo-2.0-generate-001	Deprecated — Gemini API shutdown 30 Jun 2026
gemini/veo-3.0-generate-preview	Deprecated — Gemini API shutdown 30 Jun 2026
gemini/veo-3.0-fast-generate-preview	Deprecated — Gemini API shutdown 30 Jun 2026

Gemini Omni Flash

Gemini Omni Flash (gemini-omni-1.1-flash) is Google’s recommended default video model. Use Veo 3.1 for cinematic pipelines and interpolation.

from praisonaiagents import VideoAgent

agent = VideoAgent(llm="gemini/gemini-omni-1.1-flash")
video = agent.start("A marble rolling on a chain-reaction track", output="marble.mp4")

Omni is served through Google’s Interactions API rather than the Veo predictLongRunning endpoint. VideoAgent reaches every provider through the shared LiteLLM video interface, so Omni is usable once your installed LiteLLM version routes gemini/gemini-omni-1.1-flash. Veo remains fully supported.

Veo 3.1 features

Veo 3.1 adds frame interpolation and reference images. Both pass straight through generate() — no extra setup.

First + last frame

from praisonaiagents import VideoAgent

agent = VideoAgent(llm="gemini/veo-3.1-generate-preview")

# First + last frame interpolation (Veo 3.1)
agent.generate(
    prompt="Sunrise timelapse",
    input_reference=start_image,  # first frame
    last_frame=end_image,         # last frame
)

Reference images

from praisonaiagents import VideoAgent

agent = VideoAgent(llm="gemini/veo-3.1-generate-preview")

# Up to 3 reference images
agent.generate(
    prompt="A cinematic dolly shot of the character",
    reference_images=[img1, img2, img3],
)

Pricing & billing

Gemini Veo bills per generated second in USD on the paid API. You are charged only when a generation succeeds.

A Google Flow / AI Plus-Ultra subscription does not cover the Gemini API. Flow UI credits are a different meter and cannot pay for API generations — direct Gemini API use is billed separately on the paid tier.

Parameters

video = agent.generate(
    prompt="Your description"
)

Gemini Veo has limited parameter control compared to OpenAI. Duration and size are handled automatically.

Features

Feature	Supported
Text-to-Video	✅
Image-to-Video	✅
First + last frame (Veo 3.1)	✅
Reference images (Veo 3.1)	✅
Video Remix	❌
Custom Duration	Handled automatically