Veo 3.1 Fast

dialogue-sceneslip-syncprototyping

Google DeepMind · Latent Diffusion Transformer · v3.1 FastverifiedVerified pricing

Built for dialogue scenes and lip sync. Reasonable for serious production work.

$0.10/sec

best verified rate via FAL.ai at 720p–1080p

Ceiling

1080p

Duration

4–8s

Price source

FAL.ai

Text-to-VideoImage-to-VideoAudioLipsyncExtend

Best for

Dialogue scenes and lip sync

Native audio, and 8s clips support short narrative work.

Watch out for

Supports text-to-video and image-to-video but not video-to-video

Starting cost

$0.100/sec

About $0.50 for a 5-second clip at the verified starting tier.

Quick facts for AI assistants

Citation-ready model facts

These facts are generated from the current model record, provider verification metadata, and the page update timestamp.

Canonical URL: https://vidscore.dev/models/veo-3-fast
Current verdict: Built for dialogue scenes and lip sync. Reasonable for serious production work.
Verified pricing: $0.10/sec via FAL.ai at 720p–1080p
Provider evidence: FAL.ai (Verified); Replicate (Reported); WaveSpeed (Reported)
Best fit: dialogue-scenes, lip-sync, prototyping
Primary limitation: Supports text-to-video and image-to-video but not video-to-video
Last updated: 2026-04-14

Pricing

The default rate first, with provider details one click away.

3 providers, 5 tiers

$0.100/sec

Verified default on FAL.ai · 720p–1080p

No cheaper comparable public rate found.

Audio: $0.150/sec

All provider rates

Expand for every tier, audio surcharge, and verification note.

3 providersexpand_more

FAL.aiDefault rate

Fast · Verified · HIGH trust

Open provideropen_in_new

Text-to-Video720p–1080p

$0.100/s

Text-to-Video720p–1080pAudio

$0.150/s

Checked 2026-04-14

Replicate

Fast · Reported by provider · HIGH trust

Open provideropen_in_new

Text-to-Video720p–1080p

$0.100/s

Checked 2026-04-14

WaveSpeed

Fast · Reported by provider · MEDIUM trust

Open provideropen_in_new

Text-to-Video720p–1080p

$0.80

Text-to-Video720p–1080pAudio

$1.20

Checked 2026-04-10

Should you choose it?

Why pick Veo 3.1 Fast, and why pass?

Use this as a sanity check before you compare it against the closest alternatives.

thumb_upWhy choose it

Native audio generation with lip-synced dialogue — inherited from Veo 3.1's joint audio-visual architecture
Cost-effective at $0.10/sec without audio or $0.15/sec with native audio — significantly cheaper than Veo 3.1 Standard
Verified 720p and 1080p API output with the same 8-second single-generation ceiling as Veo 3.1 Standard
Up to 30% faster generation than Veo 3.1 Standard while maintaining strong quality
Strong prompt adherence for complex multi-element scenes with realistic physics

infoWhy skip it

Supports text-to-video and image-to-video but not video-to-video
Maximum 8 seconds per generation — extend feature adds 7 seconds per step (up to 30s total via Vertex AI)
Lower visual fidelity than Veo 3.1 Standard — optimized for speed over maximum quality
Higher-resolution 1080p jobs take longer than 720p iteration passes
Not self-deployable (closed source, no model weights available)

Prompt playbook

auto_fix_highStart with these three moves

Scan the quick playbook first. Open the full guide only when you need deeper do/don't rules or example prompts.

1
Prompt like a film director calling a shot — describe what the camera sees and feels, including shot type, subject, action, context, style/lighting, and audio cues in one cohesive paragraph.
2
Keep dialogue short and natural — something that can realistically be spoken in about 8 seconds. Packing too much dialogue causes characters to speak unnaturally fast.
3
Use quotation marks for specific speech and describe sound effects with clarity — 'Character says: [exact words]' works better than embedding quotes directly in scene descriptions.

Open the full prompt guide

Extra prompt tips, best practices, common mistakes, and example prompts.

expand_more

More tips

4Add '(no subtitles)' to your prompt to prevent unwanted text overlays when using dialogue — the model sometimes defaults to rendering subtitle text.
5Use detailed negative prompts to describe what you do not want — 'wall, frame' means exclude walls and frames, rather than instructive phrasing like 'no walls.'

✓ Do this

Include all six prompt elements: cinematography (shot type, camera movement), subject (distinct traits), action (start to finish), context (location, time, weather), style/lighting (genre, palette), audio (dialogue, SFX, ambient)
For consistent characters across generations, keep the character's detailed physical description identical in each prompt — more unique and specific descriptions yield better visual continuity
Aim for 100-200 words per prompt — enough detail to guide the model without contradictory instructions that dilute quality
Use the Fast tier ($0.10-$0.15/sec) for iteration and prototyping, reserving standard Veo 3 ($0.20-$0.40/sec) for final deliverables
Specify artistic style explicitly — 'shot on 35mm film,' 'Japanese anime style,' or 'ultra-realistic rendering' for consistent aesthetic output

✗ Avoid this

Maximum ~8 seconds per generation — native extend feature on Vertex AI adds 7 seconds per step (up to 30s total)
No camera control panel — camera behavior is inferred entirely from prompt text
No video-to-video capability — text-to-video and image-to-video only
Text rendering within video (signs, subtitles) is not reliably supported
Lower fidelity than Veo 3.1 Standard — optimized for speed over maximum visual quality

Example prompts

Dialogue / Character

“Medium close-up of a young woman sitting at a rainy café window. She stirs her coffee, looks up, and says: 'I think it's going to clear up soon.' Warm amber interior lighting contrasts with blue-grey rain outside. Handheld camera with gentle sway. Rain pattering on glass, distant thunder, café jazz in background.”

Nature / Documentary

“Slow-motion close-up of a hummingbird hovering at a red flower, wings blurred with motion. Camera holds perfectly still, shallow depth of field. Soft buzzing of wings, gentle garden ambience. Golden hour backlight creates a rim glow around the bird. Nature documentary style, fine feather detail.”

Cinematic / Sci-Fi

“Wide establishing shot of a neon-lit Tokyo street at night. A man in a long coat walks away from camera, reflected in rain-slicked pavement. Synthwave music pulses softly. Camera tracks slowly behind at street level. Blade Runner aesthetic, anamorphic lens flare, teal and orange color grading.”

Based on the official prompt guide →

Background reads after the decision

Reviews, pricing breakdowns, and market context if you want extra reading after the model and compare pages.

Veo 3 Pricing 2026: API Pricing, Cheapest Buying Path & Subscription Costs→Veo 3 vs Kling v3: Which AI Video Model Wins? (2026)→State of AI Video — April 2026→Veo 3 Review: Google's AI Video Model in 2026→

FAQexpand_more

How much does Veo 3.1 Fast cost?

Veo 3.1 Fast currently starts at the verified comparable rate of $0.10/sec on FAL.ai (720p–1080p). A 5-second video at that tier costs about $0.50.

Where can I use Veo 3.1 Fast?

Via API on FAL.ai and WaveSpeed and Replicate.

How do I get good results with Veo 3.1 Fast?

Prompt like a film director calling a shot — describe what the camera sees and feels, including shot type, subject, action, context, style/lighting, and audio cues in one cohesive paragraph. See the prompt guide below.