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Documentation Index

Fetch the complete documentation index at: https://docs.lettherebe.app/llms.txt

Use this file to discover all available pages before exploring further.

LTB ships with two Google DeepMind models for shot generation. Both run on the same infrastructure but split along a speed-versus-detail axis. Use Flash to scan many candidates, then switch to Pro on the keeper before animation.

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The two models

UI labelImplementationCommon nameStrength
Progemini-3-pro-image-previewNano Banana ProDetail, consistency, final-frame quality
Flashgemini-3.1-flash-image-previewGemini 3.1 Flash ImageFast candidates, lower token cost
Flash is the panel default. The lighter token cost makes it cheap to scan many candidates per beat. When a Flash candidate captures the right composition, re-render the same beat in Pro for the master.

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Token cost by resolution

1 token = $0.05. Costs are per generation. Flash adds a 0.5K step that Pro does not — useful for layout-only checks. At 4K, Flash costs about 36% less than Pro per call.
The Pro pricing collapses 1K and 2K to the same 3.20 tokens. Render Pro at 2K whenever you do not specifically need 1K — the cost is the same and the resolution is higher.

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When to use which

Pick the model from the job, not the budget. Flash earns its keep on volume; Pro earns it on the one shot that gets animated.
SituationModel
Scanning many candidates per beatFlash
Rendering a Character or Subject referencePro
Promoting a beat candidate to masterPro
Finishing a Cinematic Shots or Edit passPro
Layout-only check, before any prompt workFlash 0.5K
Run Flash first at 1K to compare nine candidates for 14.4 tokens (0.72).Promotethekeeper,thenre−renderthesamebeatin‘Pro2K‘for‘3.2tokens‘(0.72). Promote the keeper, then re-render the same beat in `Pro 2K` for `3.2 tokens` (0.16). Total cost for one master shot — about $0.88, versus $1.44 if every candidate had been Pro.

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Where to switch

The model picker lives on the bottom panel of the Image mode. Open any beat, expand the panel options, and switch between Pro and Flash. The same picker is available in Create, Shots, Edit, and Upscale modes.

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Capture spec

FileRatioStatePriority
models/image/01-selector.png4:3Bottom panel with Pro / Flash selector exposedP0
models/image/02-pro-vs-flash.pngColumns 2Same prompt rendered in Pro and Flash, side by sideP1

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Video models

Fourteen image-to-video models with full pricing.

Image mode

Generate shots beat by beat.