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Pika H3 Flex
Pika H3 Flex writes picture and sound in one pass: describe the shot and get a 5, 10 or 15 second clip with dialogue, music and effects already in sync. It returns a watermark-free MP4 at up to 4K.
What Is Pika H3 Flex?
Pika H3 Flex is a text-to-video and image-to-video model Pika released on 29 October 2026. It is a post-trained take on MiniMax H3, tuned for quick repeatable passes instead of one long render: the model denoises in six steps and turns out five, ten or fifteen second clips at 24 fps with stereo audio, so dialogue, score, effects and room tone are generated alongside the frames rather than bolted on in an editor. The model works natively at 480p or 768p, and the hosted service lifts results to 1080p, 2K or 4K while holding the audio and the frame rate. Pika also published the weights as LoRA adapters on the 33B H3 base, so the same model can be run locally. This site runs the hosted build, which means a browser is the only requirement — no GPU, no ComfyUI, no waiting list.
- Sound arrives with the framesDialogue, music, effects and ambience are produced in the same pass as the picture, so the clip needs no sound design stage and nothing has to be lined up against a timeline afterwards.
- Six steps, short takesSampling runs in six denoising steps, which is what makes a five second idea cheap enough to throw away and reshoot with a different camera move.
- 480p drafts, 4K finalsExplore a look at 480p or 768p, then re-run the keeper at 1080p, 2K or 4K — the higher tiers are upscaled from the 768p render, so audio and motion stay as they were.
How to Use Pika H3 Flex
Three decisions take an idea to a finished file: what happens in the shot, how long it runs and how sharp it should be. The tool handles the rest in a single pass, and the credit price is shown before anything starts rendering.
Why Creators Reach for Pika H3 Flex
Most short-form work dies in the gap between the picture and the soundtrack: the frames are finished long before anyone scores them. This model closes that gap by generating both at once, which turns a clip into a single decision instead of a two-stage production. The other half is pacing. Six denoising steps and a fifteen second ceiling mean the loop of try, look, adjust stays fast, and a 480p draft costs little enough that abandoning a bad idea is normal. Failed runs return their credits, so the budget goes to the takes that actually finished.
Audio without a second tool
Room tone, footsteps, a music bed and spoken lines come out of the same generation as the frames, so a finished clip is never a silent file waiting for a sound pass.
First frame, last frame, or neither
Start from a prompt alone, or pin a first frame, a last frame or both to animate a still, keep a face consistent or bridge two shots into one move.
Three lengths, six ratios
Five, ten or fifteen seconds at 24 fps, framed for 16:9, 9:16, 1:1, 4:3, 3:4 or 21:9 — vertical for feeds, wide for a title sequence, square for a carousel.
Iteration priced by the second
Credits are charged per second of output rather than per attempt, so a five second probe costs a fraction of the fifteen second final you keep.
Failed runs give credits back
If a generation errors, times out or trips the safety filter, the credits return to the balance on their own — you are only billed for clips that actually arrive.
Premium Plans & Pricing
Choose the perfect plan for your AI Video/Image Generator needs and start creating professional videos.
Basic-Yearly
$0.015/credit
Includes these features:
- 7200 credits per year
- High quality AI image Generator
- Powerful AI Video Generation
- AI video effect features
- Commercial License
- Fast generation queue
- Private generations
- Valid for 1 year
- Cancel anytime
/Year
Pro-Yearly
$0.013/credit
Includes these features:
- 25200 credits per month
- High quality AI image Generator
- Powerful AI Video Generation
- AI video effect features
- Commercial License
- Fast generation queue
- Private generations
- Valid for 1 year
- Cancel anytime
/Year
Max-Yearly
$0.01/credit
Includes these features:
- 54000 credits per year
- High quality AI image Generator
- Powerful AI Video Generation
- AI video effect features
- Commercial License
- Fast generation queue
- Private generations
- Valid for 1 year
- Cancel anytime
/Year
Pika H3 Flex — Frequently Asked Questions
Answers on what the model is, whether a free tier exists, how long a clip runs, how the audio is made, which image inputs are accepted and what happens when a render fails.
What is Pika H3 Flex?
Pika H3 Flex is an AI video model Pika released on 29 October 2026. It is a post-trained version of MiniMax H3 built for fast iteration: six denoising steps, five to fifteen second clips at 24 fps, synchronised stereo audio, and text, first-frame or last-frame inputs. The weights were published openly as LoRA adapters on the H3 base.
Is there a free trial?
No. Every render costs real GPU time, so the generator runs on paid plans and credit packs only. A one-time pack starts at $9.90, monthly plans start at $11.90 per month billed yearly, and pack credits never expire.
How long can a Pika H3 Flex video be?
Each generation is five, ten or fifteen seconds at 24 fps. The model is built for short high-iteration shots rather than one long take, so a longer edit is assembled from several clips.
Does it really generate sound?
Yes. Audio is produced in the same pass as the picture — dialogue, music, effects and ambience — rather than being dubbed in afterwards, which is why footsteps and room tone line up with what is on screen.
Can I animate one of my own photos?
Switch to image to video and supply a start frame, an end frame or both. The model fills the motion between them, which is how a still portrait becomes a moving shot or a character stays recognisable across cuts.
What happens if a generation fails?
If the model returns an error, a safety block or a timeout, that generation's credits go back to your balance automatically. Only clips that finish are charged.
Can I get a refund?
If you have paid but have not yet used our AI product to generate results, a refund is possible. However, if results have already been generated, the balance can be refunded.
Write the Shot. Hear It Back.
Describe one shot, pick five, ten or fifteen seconds, and the generator returns an MP4 with dialogue, score and effects already sitting where they belong. Download it watermark-free at up to 4K — and a failed run costs nothing.