Dual Mode — compare two models, keep the best
TL;DR: Enable Dual Mode, select two models, generate both simultaneously. Two results appear side by side. Click the one you prefer, import to timeline, discard the other. Half the guesswork, same generation time.
Why compare models instead of picking one
Section titled “Why compare models instead of picking one”Every model has a different aesthetic, motion character, and quality ceiling. Choosing blindly means generating, evaluating, switching, generating again — linear iteration that compounds time and cost.
Dual Mode runs two models in parallel from the same source clip and the same prompt. You see both results before committing to either. The comparison happens before anything touches your timeline.
What Dual Mode is and isn’t
Section titled “What Dual Mode is and isn’t”Is: Two different models generating simultaneously from the same source, same prompt, same settings where shared. Results appear side by side for comparison.
Isn’t: Two versions of the same model with different settings — Dual Mode requires two different models. It also isn’t a split-screen preview — two separate cards, each openable in Premiere’s Source Monitor.
Step 1 — Enable Dual Mode
Section titled “Step 1 — Enable Dual Mode”Scroll below the model controls in the modelBridge panel. Find the Dual Mode section with a toggle switch.
Toggle label: “Generate with two models simultaneously and compare results”
When enabled, a secondary model selector expands below the toggle.
Step 2 — Select your two models
Section titled “Step 2 — Select your two models”Your primary model is already selected in the main model dropdown. The secondary model has its own searchable dropdown inside the Dual Mode section — browse installed models grouped by category.
Rules:
- Both models must be the same category — text-to-video with text-to-video, image-to-video with image-to-video
- You cannot select the same model twice
- Incompatible models are hidden from the dropdown automatically
The dropdown shows compatibility tiers:
- No badge — fully compatible, shared inputs cover everything
- Warning badge — secondary model needs extra inputs. Additional fields appear below for you to fill in
When both models are selected, an Activated badge appears and a schema diff shows: shared inputs, primary-only fields, and secondary-only fields.
Step 3 — Check the combined cost estimate
Section titled “Step 3 — Check the combined cost estimate”The cost badge above Generate updates to show the combined cost across both models — e.g., ”~$2.40 · 2 models” — with a breakdown per model below.
Each model bills separately on fal.ai. Dual Mode costs roughly double a single generation at the same settings.
Step 4 — Select your source clip
Section titled “Step 4 — Select your source clip”Click your source clip on the Premiere timeline as normal. Both models use the same source clip — there’s no way to assign different sources per slot.
Step 5 — Generate both simultaneously
Section titled “Step 5 — Generate both simultaneously”Click Generate. Both models fire at the same time — parallel API calls, same prompt, same source clip.
A single shared progress indicator shows generation status. If one model finishes before the other, its card shows the result while the other shows “Generating…”
If one slot fails: A red error state appears on the failed card with a Retry [model name] button. The successful result is still available.
If both fail: A Retry both button appears alongside per-slot retry options.
Step 6 — Compare results side by side
Section titled “Step 6 — Compare results side by side”Both results appear as two cards in the preview panel. Each card shows:
- Video thumbnail or player
- Model name and category label
- Badge state (Imported, Saved, Discarded)
To preview full-screen: Click a card to select it — it opens in Premiere’s Source Monitor. Switch between the two by clicking each card. Audio players are mutually exclusive — playing one pauses the other.
Evaluate on the things that matter for your shot:
- Which composition works better for the cut?
- Which motion character fits the edit’s energy?
- Which model’s aesthetic is closer to your visual system?
Step 7 — Import the winner, discard the other
Section titled “Step 7 — Import the winner, discard the other”Click the card you prefer to select it. Then click Import to Timeline.
The first import replaces your source clip at its original timecode and scale. If you want to import the second result too, it inserts at the playhead.
Options per card:
- Import to Timeline — replaces source clip or inserts at playhead
- Save to Project Bin — saves without touching the timeline
- Save both — saves both results to Project Bin
- Discard (×) — removes the card from preview
After both cards are handled, the preview closes automatically.
When to use Dual Mode
Section titled “When to use Dual Mode”Use it when:
- You’re trying a model category for the first time and want a reference point
- Two model families have meaningfully different aesthetics and you can’t decide without seeing both
- The shot is important enough to justify double the cost
- You’ve been iterating on one model without progress
Don’t use it when:
- You already know which model you want
- You’re in the middle of background generations — Dual Mode requires zero active jobs before starting
- You want to compare different settings on the same model — Dual Mode doesn’t support this
Cost discipline in Dual Mode
Section titled “Cost discipline in Dual Mode”Dual Mode costs roughly twice a single generation. Use it deliberately:
- Scout with single generations first. Lock your prompt and source before running Dual Mode.
- Check the cost breakdown before generating.
- Tag to client/project before generating. Both model costs log as separate rows in the Billing tab.
In real projects
Section titled “In real projects”New model category, first project: Select Kling v3 Pro as primary, Minimax as secondary. Same source image, same prompt. Generate both, compare motion character in Source Monitor. Pick the aesthetic that fits — you now know which model to use for the remaining shots.
Mood film, two directions: Two model families with different stylization tendencies. Run Dual Mode on the hero establishing shot. Show both to the creative director. Decision made before any further generation.
Agency pitch, fast turnaround: Run Dual Mode on the first shot to establish the model choice. Lock that model for the remaining shots — single generation for each.
Iterating on a stubborn shot: You’ve run four generations on one model and it keeps missing. Enable Dual Mode with a different model family as secondary. See immediately whether the problem is the prompt or the model.
Limitations
Section titled “Limitations”| Limitation | What it means |
|---|---|
| Two different models required | Cannot compare settings variants of the same model |
| Same source for both slots | No way to assign different source clips per model |
| Same category required | Cannot compare text-to-video with image-to-video |
| Blocks background generations | Requires zero active jobs before starting |
| No per-slot progress | Single shared progress indicator during generation |
| Cost logs as two separate rows | Dual generation costs aren’t linked as a pair in Billing |
| State resets on panel reload | Dual Mode configuration doesn’t persist between sessions |
Common failure modes — if one or both slots fail during generation.
Building a signature look — once you’ve chosen your model via Dual Mode, lock the visual system.
From moodboard to locked shot — where Dual Mode fits in a full generation pass.