Veo 3.1 Fast Extend Video revolutionizes video generation by streamlining the extension workflow. This iteration delivers identical extend capabilities as prior versions but at a fraction of the cost and with dramatically faster iteration times. Optimized for creators needing quick refinements, it introduces flexible audio on/off modes to support both silent visuals and full soundtracks.
For teams prioritizing speed, cost-efficiency, and editorial control, Veo 3.1 Fast redefines iterative video creation. It’s not just faster, it’s smarter: preserving context, supporting multimodal choices, and integrating seamlessly into high-volume workflows. Whether you're scaling ad campaigns or prototyping film sequences, Veo 3.1 Fast delivers studio-quality extensions at developer-friendly speeds.
Veo 3.1 Fast Extend focuses on efficiency without sacrificing quality, targeting real-time workflows.
Independent tests on standard datasets (e.g., UCF-101, Kinetics-400) highlight Veo 3.1's edge in speed and economy.
This model prioritizes speed and flexibility for iterative creative processes.
Veo 3.1 excels in fast-paced production environments requiring quick video tweaks.
vs. Veo 3.0: Veo 3.1 Fast delivers nearly identical visual quality but with 40% faster inference and 30% lower cost per second. Audio control (on/off) is now user-configurable, whereas Veo 3.0 always included audio.
vs. Kling AI: Veo 3.1 undercuts Kling's pricing by 40% while matching 1080p quality and adding audio modes Kling lacks natively. Kling supports longer base generations, but Veo's extend iteration crushes it in real-time editing speed.
Extending short AI-generated videos is a documented use case for this model, letting creators continue an existing Veo-generated clip rather than starting over.
Building longer cinematic sequences is another stated use case, since the model extends previously generated footage into a longer finished video.
Social media ad continuation is also listed, with examples such as extending ads, promos, and Shorts/Reels with extra moments or alternate endings.
Rapid iteration for fast-turn video production is a documented fit, especially for workflows that need quick creative feedback and speedy turnaround.
import requests, time headers = {"Authorization": "Bearer " + AIMLAPI_KEY} job = requests.post( "https://api.aimlapi.com/v2/video/generations", headers=headers, json={ "model": "veo3.1/fast/extend-video", "prompt": "A serene timelapse of clouds over a mountain range" }, ).json() gid = job["id"] while True: res = requests.get(f"https://api.aimlapi.com/v2/video/generations?generation_id={gid}", headers=headers).json() if res.get("status") in ("completed", "error"): break time.sleep(5) print(res["video"]["url"])
const headers = { Authorization: `Bearer ${process.env.AIMLAPI_KEY}`, "Content-Type": "application/json", }; const job = await (await fetch("https://api.aimlapi.com/v2/video/generations", { method: "POST", headers, body: JSON.stringify({ "model": "veo3.1/fast/extend-video", "prompt": "A serene timelapse of clouds over a mountain range" }), })).json(); let res; do { await new Promise((r) => setTimeout(r, 5000)); res = await (await fetch(`https://api.aimlapi.com/v2/video/generations?generation_id=${job.id}`, { headers })).json(); } while (!["completed", "error"].includes(res.status)); console.log(res.video.url);
# submit the generation — the response contains the job "id" curl -X POST https://api.aimlapi.com/v2/video/generations \ -H "Authorization: Bearer $AIMLAPI_KEY" \ -H "Content-Type: application/json" \ -d '{"model":"veo3.1/fast/extend-video","prompt":"A serene timelapse of clouds over a mountain range"}' # then poll until status is "completed" — video.url holds the result curl "https://api.aimlapi.com/v2/video/generations?generation_id={id}" -H "Authorization: Bearer $AIMLAPI_KEY"
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Output | |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
Veo 3.1 Fast Extend Video This page | Video generation |
Veo 3.1 Fast Extend Video takes video as input and returns video.
Veo 3.1 Fast Extend Video is priced at $0.13 / sec (variable).
Veo 3.1 Fast Extend Video is billed per generation — a fixed charge per output rather than by prompt length.
Veo 3.1 Fast Extend Video was built by Google.
Send a request to v2/video/generations with veo3.1/fast/extend-video as the model id.
Yes. Veo 3.1 Fast Extend Video is served through AI/ML API, so the same key and endpoint format used for other models applies.
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