Free AI Video ToolsFree AI Video Tools

Veo 3.1 Prompt Generator

Structured JSON prompts engineered for Google's Veo 3.1, including its native audio.

⚡ Best for
Dialogue, native audio, and cinematic camera moves / transitions.
🆕 Latest update
Veo 3.1 (and 3.1 Fast) sharpened audio sync and prompt adherence; in 2026 head-to-heads it wins the audio + lip-sync round outright.
💡 Top tip
Always write a dedicated audio block (ambient + SFX + a short dialogue line). Veo generates sound from the same prompt, leaving it blank wastes its biggest edge.
💰 Cost
Prompt is free here. Veo runs in Gemini, AI Studio, and Flow; on aggregators it's a premium tier (~58–88 credits/clip) vs cheaper models like Kling.
✅ Verdict
The best all-rounder for talking-head and cinematic work, roughly tied with Seedance, just keep shots to ~8s.

Free · no signup · ⌘/Ctrl + Enter to generate

Veo 3 prompt: turn a one-line idea into a Veo 3.1-ready JSON prompt with this free tool, complete with a negative prompt, then paste it straight into Veo.

Veo 3.1 is Google DeepMind's flagship text- and image-to-video model, and the one thing that sets it apart in a prompt is native audio, Veo generates synchronized sound, dialogue, and ambience from the same prompt that drives the picture. It also has unusually strong prompt adherence, which is exactly why a structured, field-based brief outperforms a one-line description here.

Veo 3.1 runs in Google's Gemini app, Google AI Studio, and Flow, plus the major AI video platforms that route to it. This tool writes the prompt; you paste it into whichever Veo surface you use.

Verdict

Is Veo 3.1 powerful?Yes. It wins the audio and lip-sync round in 2026 head-to-heads and nails cinematic transitions and camera moves.
Is it easy to prompt?Fairly. It follows a structured brief closely, and a JSON prompt works better than a one-liner.
Is it the best for everyone?No. For physics-heavy action, Seedance and Kling rate higher. Veo shines on dialogue, audio, and transitions.
Worth using in 2026?Yes. It is the cinematic baseline, especially for talking-head clips, ads, and reveals.

Use Veo if you…

  • You make talking-head or dialogue clips that need real lip-sync
  • You want native audio (ambient, SFX, speech) from a single prompt
  • You do ad hooks or reveals that lean on transitions and camera moves
  • You want strong prompt adherence from a structured brief

Pick another model if you…

  • You need a long, multi-beat action shot in one take (the ~8s cap rushes it)
  • You want physics-heavy stunts, where Seedance or Kling land cleaner
  • You want the cheapest possible cost per clip

Feature snapshot

CapabilityRatingTake
Native audio + lip-syncExcellentIts clearest edge; wins the audio round.
Cinematic transitionsExcellentBest model for start-frame to end-frame reveals.
Camera controlStrongLiteral: 'wide-angle dolly in' executes as written.
Prompt adherenceStrongFollows a detailed JSON brief closely.
Physics-heavy actionModerateCinematic frames, but floaty on hard stunts.
Clip lengthLimitedAbout 8 seconds per clip; chain shots for longer.

Pros

  • Native audio, describe dialogue, sound effects, and ambience and Veo renders them in sync (it wins the audio/lip-sync round in 2026 comparisons)
  • Best-in-class cinematic transitions (start-frame → end-frame) and precise camera moves like 'wide-angle dolly in'
  • Strong prompt adherence: it follows a detailed structured brief closely instead of improvising
  • Real-world physics and photorealism on par with the top models; reliable 1080p/4K output

Cons

  • Capped at ~8 seconds per clip, longer action sequences get rushed or sped up, so chain shots instead
  • Has a habit of adding audio or motion you didn't ask for; state what you want (and what you don't) explicitly
  • Can subtly sharpen/alter your input image on image-to-video; water particles and fast physics occasionally look off

What's new in Veo 3.1

Across the 2026 model rankings, Veo 3.1 (and the cheaper Veo 3.1 Fast) is treated as the cinematic baseline everything else is measured against. The headline upgrade over 3.0 is audio: reviewers consistently single out Veo for the most natural ambient layering and the cleanest lip-sync, to the point that it takes the dedicated 'audio and lip-sync' round in side-by-side tests even against Seedance and Kling.

The trade-off that comes up in every test is the ~8-second cap. When a prompt asks for a multi-beat sequence (run, jump, land), Veo compresses it into 8 seconds and the action logic suffers. The fix the reviewers use is to stop fighting it: write one beat per clip and chain clips in the edit.

How Veo compares to other AI video models

Where Veo 3.1 sits against the rest of the field on value and output quality, and how it scores capability by capability. Hover or tap any model for the detail.

Higher qualityLower qualityPremium $$$Best value
ModelRealismMotion & physicsAudio & lip-syncCamera controlValue
Seedance+ image
LTX
Veo 3.1
Kling 3.0
Sora 2+ image
Runway
Luma
Grok+ image
PixVerse
Happy Horse
Pika

Scores are our editorial read of 2026 head-to-head tests, on a 1-5 scale, not vendor benchmarks. Every model shown is a video generator; a few (marked + image) also create stills. Use it to pick which model to write a prompt for, then generate on whichever platform hosts it.

Where Veo wins, and where it doesn't

Veo wins on dialogue, native audio, camera control, and transitions. In the transition test (messy office → bright studio), it's called the best model for the job, which makes it ideal for ad hooks and thumbnail-to-scene reveals. Its camera grammar is literal: 'wide-angle dolly in' executes as a wide-angle dolly in.

Where it slips: pure physics-heavy action. In the dirt-bike-off-a-cliff and shirt-removal-into-water tests, Veo produced cinematic single frames but floaty or incomplete physics (the rider vanished; the shirt didn't come off cleanly). For those shots, Seedance and Kling rate higher. And because it sharpens the input image, image-to-video can drift slightly from your source.

The audio hack most people miss

Veo's defining feature is that it co-generates audio with the video, but a prompt that doesn't mention sound leaves it to chance, and Veo will often invent audio you didn't want. The highest-leverage move is to write the audio explicitly as three parts: an ambient bed (e.g. 'low café murmur'), specific SFX tied to the action (e.g. 'ceramic cup on a wooden saucer'), and a short dialogue line in quotes with a tone note. Keep spoken lines short so they fit comfortably inside 8 seconds.

How to write a great Veo prompt

Veo 3 prompt examples

Idea: “A barista finishing a latte in a cozy café, morning light.”, here's the kind of JSON prompt this tool writes for Veo 3.1:

{
  "shot": "medium close-up, slow dolly-in",
  "subject": "a barista pouring the final leaf of latte art into a white ceramic cup",
  "environment": "warm independent café at 8am, steam rising, blurred patrons behind",
  "lighting": "soft golden window light from camera-left, gentle highlights on the crema",
  "camera": "35mm lens, shallow depth of field, f/2.0, subtle handheld micro-movement",
  "motion": "the milk stream tapers and stops; barista sets the cup down and looks up",
  "audio": {
    "ambient": "low café murmur, distant espresso machine hiss",
    "sfx": "ceramic cup settling on a wooden saucer",
    "dialogue": "barista (soft, warm): \"one oat latte, enjoy.\""
  },
  "style": "photoreal, cinematic, shallow focus, natural color grade",
  "negative_prompt": "no text overlays, no logos, no extra fingers, no fast cuts, no warped cup, no harsh flicker"
}

Veo 3.1 prompt FAQs

Does Veo 3.1 support JSON prompts?

Yes. Veo responds well to structured, field-based prompts, subject, environment, camera, lighting, audio, motion, and a negative prompt. Structured input is parsed more reliably than one long sentence, so this generator outputs Veo prompts in JSON by default. Paste the JSON straight into Gemini, AI Studio, or Flow.

How do I prompt Veo 3's native audio?

Add an audio block with three parts: ambient sound (the background bed), specific SFX (discrete sounds tied to the action), and dialogue (lines in quotes with a tone note). Veo generates the audio in sync from that same prompt, it's the feature that most separates a great Veo clip from a generic one, and in 2026 head-to-heads Veo wins the audio round, so never leave it blank.

Why does my Veo action scene look rushed?

Veo is capped at about 8 seconds per clip. If your prompt asks for several actions in sequence, it compresses them and the physics break down. Write one clear beat per clip (≈8 seconds) and chain multiple clips together in editing rather than asking for one long take.

Is this Veo prompt generator free?

Yes, writing the prompt is completely free with no signup. Generating the video happens inside Google's Veo (Gemini, AI Studio, or Flow), which has its own free and paid tiers.

New to AI video? Read the image-to-video guide for the one rule that beats everything, or browse all the free prompt tools.

Other model prompt generators

Seedance 2.0 Prompt Generator

Cinematic, audio-paired prompts engineered for ByteDance's Seedance 2.0, the current value king.

Open

Kling 3.0 Prompt Generator

Structured prompts built for Kling 3.0, the value-and-consistency pick for people, motion, and multi-shot cuts.

Open

Runway Gen-4.5 Prompt Generator

Control-first prompts for Runway Gen-4.5, the filmmaker's pick for precise camera moves.

Open

Grok Imagine Prompt Generator

Fast, cheap prose prompts built for xAI's Grok Imagine, the value pick for testing ideas.

Open

Pika 2.1 Prompt Generator

Prose prompts tuned for Pika 2.1, realism, consistency, and the Ingredients feature.

Open

Luma Ray 3.2 Prompt Generator

Cinematic, HDR-ready prose prompts engineered for Luma Ray 3.2, with keyframes for controlled transitions.

Open

PixVerse V6 Prompt Generator

Prompts built for PixVerse V6 (punchy social clips) and C1 (character consistency across shots).

Open

LTX-2.3 Prompt Generator

Prose prompts built for LTX-2.3, Lightricks' open-source, audio-and-video, run-it-yourself engine.

Open

Happy Horse 1.1 Prompt Generator

Prose prompts tuned for Alibaba's Happy Horse 1.1, native audio, one clean beat, and a likely open-source future.

Open

Sora 2 Prompt Generator

Cinematic, true-to-life prose prompts engineered for OpenAI's Sora 2.

Open