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Gemini Omni Flash 1.1 vs LTX 2.5

Pick Gemini Omni Flash for cheap exploring and a character that keeps its voice. Pick LTX 2.5 for the final pass of a shot you already found, written as a shot brief.

A woman leaning back against a door she has just closed, late afternoon light on the floor.
Made with Gemini Omni Flash 1.1 in this studio.
A first frame from an LTX clip: steam rising off a cup on a cold morning.
Made with LTX 2.5 in this studio.

Side by side

Gemini Omni Flash 1.1LTX 2.5
Made byGoogle DeepMindLightricks
Best forA character that keeps its look and voice across clipsClips with picture and sound from one shot brief
Price here, fromVideo 2,000 crVideo 3,120 cr
Strong atSound in the same pass · A character that keeps its voice · Cheap at the bottom endSound and picture in one pass · It understands a shot brief · Quality-optimised by design
Variants in the studio44

Prices are in credits at the default settings, worked out the same way as the button in the studio. Every run shows its own price before you press it.

Which one to pick

Finding the shot: Gemini Omni Flash 1.1Gemini Omni Flash is cheap at the bottom end, good for many tries.
The final pass: LTX 2.5LTX 2.5 is quality-optimised by design and built for the last render.
A detailed shot brief: LTX 2.5LTX 2.5 understands a shot brief: subject, camera, light and sound.
A recurring voice: Gemini Omni Flash 1.1Gemini Omni Flash keeps a character's voice across clips.

Where each falls short

Gemini Omni Flash 1.1

  • Google publishes no list of limitations for this model, so none is invented here.
  • Three to ten seconds per generation. For longer, build a script so the shots belong together.
  • The reference ingress takes images and clips, not audio. If the sound has to come from a clip you supply, this is not the one.

LTX 2.5

  • Lightricks publishes no list of limitations for this model, so none is invented here.
  • It is built for the final pass, which means it is not the cheapest way to explore. Find the shot on a cheaper model first.
  • The rate is per second and rises with resolution. The Studio shows both before you run.

Questions

Do both make sound?

Yes. Both generate audio in the same pass as the picture.

Which is cheaper?

Gemini Omni Flash at its bottom tier. LTX 2.5 is priced per second and rises with resolution; both amounts are on this page.

How do I use them together?

Explore on Gemini Omni Flash, then render the shot you chose on LTX 2.5 with the same brief.

Read on

All about Gemini Omni Flash 1.1Video with sound made in the same pass, from a frame, a prompt or a reference.All about LTX 2.5Video and audio generated together in one pass, from a shot brief.Run both on the same inputRun one prompt and one start frame through six AI video models at once and compare the clips side by side. Find the best model for your shot before you scale.Kling vs Gemini Omni Flash: AI video with sound

Try Gemini Omni Flash 1.1 and LTX 2.5 side by side

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