The Cheapest Top-Tier Video AI of 2026: Testing Grok Imagine Video 1.5

On June 17, xAI released Grok Imagine Video 1.5 to the public. The model immediately outranked Seedance 2.0, Kling, and Veo 3.1 — and this at a price 7 times lower than OpenAI's rates.

We analyzed the capabilities and tested the model on real-world tasks — the results are in this article.

What makes Imagine Video 1.5 interesting

The key addition in 1.5 is native audio. Dialogue, lip sync, and sound effects are generated together without separate post-production. Previously this was an extra step — you had to merge video with audio manually or through third-party services.

The core mechanic is image-to-video: you provide a starting frame and describe the motion, and the model animates the scene taking into account physics, camera movement, and atmosphere. Each frame is generated sequentially based on the previous ones, resulting in stable motion and a reasonably smooth picture.

A 6-second clip at 720p generates in approximately 25 seconds. According to xAI, that's 2–4 times faster than competitors. For anyone testing dozens of creative variants, the difference is noticeable. Maximum clip length is 15 seconds in a single pass. Longer scenes are assembled via Extend from Frame: the model continues the video from the final frame of the previous clip, preserving lighting and motion.

Quality is currently 720p at 24fps — 1080p hasn't been added yet. Three new features have appeared in the interface: folders in the left sidebar, multiple parallel generations, and archive search without manual scrolling.

In practice, this is currently the most affordable top-tier model on the market. The current leaderboard places Grok Imagine 1.5 above Seedance 2.0, Kling 3.0, and Veo 3.1 in tests by real users.

Grok Imagine Video 1.5 tests

You can test the model via the official website on desktop and through the mobile app. Video generation is unavailable without a paid plan. A single 15-second video via fal.ai costs $0.84, while a SuperGrok subscription starts at $30 per month. If you don't need an AI agent, the choice of workflow is obvious.

For this article, we used Replicate, which has no minimum deposit and charges $0.008 per second of video. A 15-second video comes out to approximately $1.5.

Nutra prompt

(0-4s) Extreme close-up of a woman's face — tired eyes, dull skin, no makeup. She sighs. Kitchen background, morning light. A white supplement bottle sits blurred in the foreground.

(4-8s) Time-lapse dissolve — same woman, same kitchen, 30 days later. Skin glows, eyes bright, she smiles naturally. The bottle now in sharp focus — label readable, nearly empty.

(8-12s) Medium shot — she steps on a scale, looks down, looks up with a genuine smile. Not overdone. Real.

(12-15s) Slow push-in to the supplement bottle on the counter. Clean white label, green accent. Morning sunlight hits it. Ambient uplifting music swells softly. Single text overlay fades in: «30 days. Real results.»

Audio: soft ambient morning sounds, birds, subtle motivational swell. No voiceover.

The result came out decent, but in some frames the video compresses and looks a bit off.

Gambling prompt

(0-3s) Guy on a couch late at night, phone in hand. Screen shows Chicken Road — chicken jumping across frying pans. He leans in, tense. Low beat starts.

(3-7s) Chicken lands the last pan — x47 multiplier flashes. He shoots up from the couch, both hands in the air. «NO WAY!» Face — pure shock turning into a huge grin.

(7-10s) Close-up of phone screen. Coins cascade, balance ticking up in real time. He tilts the phone toward camera — balance visible. Coin sounds, celebration jingle kicks in.

(10-13s) He looks straight at camera, points at the phone. «Bro. Just play it.» Laughs. Thumbs up.

(13-15s) Cut to black. Chicken Road logo center frame. Text fades in:

«Think you can go further?»
«Play now →»

Single punchy audio sting on cut to black.

Audio arc: low tension beat (0-6s) → sharp win sound (7s) → coin cascade + celebration (7-10s) → casual laugh (10-13s) → one clean final sting (13-15s).

The gambling result came out at a comparable level. Viewed through the eyes of an average user, it definitely cuts through banner blindness.

Crypto prompt

(0-4s) Extreme close-up — green candles pumping on a dark trading screen. Numbers climbing. Reflection of the chart visible in someone's eyes. Tense ambient electronic hum builds slowly.

(4-8s) Camera pulls back — young guy in a modern apartment, city lights through floor-to-ceiling windows behind him. He's still, focused. One hand on the desk. Chart still rising on screen.

(8-11s) Phone buzzes on the desk. He glances down — push notification: «Your position is up 340%». He exhales slowly. Leans back. Half-smile. Not screaming — just knowing.

(11-13s) Close-up of phone screen — portfolio balance, green across the board. His thumb hovers over «Withdraw». Single clean notification ping cuts through the music.

(13-15s) Cut to dark background. Minimal logo center. Text appears:

«The move was obvious.
Were you in?»

«Start trading →»

Low electronic sting fades out.

Audio arc: dark ambient build (0-8s) → phone buzz (8s) → single notification ping (11s) → clean fade to silence with final sting (13-15s).

The crypto video would have been close to perfect if not for the recurring format issues and the opening frame.

E-commerce prompt

(0-3s) White box on a clean white surface, soft studio light. Hands enter frame — deliberate, unhurried. Fingers find the pull tab. Satisfying paper-on-paper sound as the lid slides off.

(3-7s) First reveal — iPhone 17 Pro lying in white foam. Camera slow push-in. Titanium finish catches the light. No rush. Just the phone and the silence before the music hits.

(7-10s) Hands lift the phone. Rotate it slowly — side profile, back camera block, front screen. Each angle held for a beat. Screen lights up automatically. Soft chime. Studio light reflects off the chassis like jewelry.

(10-12s) Phone placed center frame, screen facing camera. Wallpaper glows. Close-up on the camera lens cluster — sharp, premium, cinematic rack focus.

(12-15s) Cut to white background. iPhone 17 Pro silhouette. Text fades in clean:

«New drop. Zero compromises.»
«Get yours now →»

Gentle product reveal music swells and cuts clean.

Audio arc: paper unboxing ASMR (0-3s) → near silence with soft ambient (3-7s) → single chime on screen wake (7s) → music swell (10-15s) → clean cut.

In the editorial team's view, this is the case where the model handled the task best — though there are a couple of moments where the motion looked unnatural. Overall, the result is worth attention and testing with real prompts.

Takeaways

Grok Imagine Video 1.5 doesn't look like a revolution in video generation just yet, but it's a genuinely top-tier tool for rapid video creative testing. For $1–1.5 on Replicate you can get a 15-second clip that outperforms most AI-generated video in terms of quality.

The main issue for now is unstable formatting on certain frames and artifacts. But these can be fixed through settings adjustments and iteration.