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Pika H3 Flex
Describe the shot and the sound, and Pika H3 Flex renders a 5–15s MP4 with dialogue, music and effects already in sync — right in your browser.
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Inside the Pika H3 Flex model
One six-step sampler draws picture and sound in the same pass; we host the weights, so all you need is a browser tab.
- Built on a retrained MiniMax H3The October 2026 release samples in only six steps, returning 5–15s footage at 24 fps with stereo sound already embedded.
- Start from words or from a stillFeed it a written prompt, an opening still, a closing frame, or both — enough to bring a photo to life or connect two shots.
- Runs hosted, no GPU neededOwn the hardware and the LoRA weights load onto the 33B base in ComfyUI; otherwise the model runs on our side, straight from your browser.
Three steps from a written shot to an MP4
Every Pika H3 Flex render follows one short loop: write it, set it up, download it.
What makes Pika H3 Flex different
Six details that change how a Pika H3 Flex render actually feels to use, from the audio pass to credit refunds.
Audio generated alongside the frames
Dialogue, score, effects and room tone come out of the same pass as the visuals, so no post-sync work is left for you.
Short sampling, more takes
Because each pass is quick, you can draft three or four readings of one beat and keep the best rather than queuing.
Draft cheaply, finish at high resolution
Test an idea in 480p or 768p, then re-render the winner in 1080p, 2K or 4K — audio and frame rate carry over untouched.
A ratio for every screen
Choose 21:9, 16:9, 1:1, 4:3, 3:4 or 9:16 up front, so a single shot suits a widescreen cut, a social post or a vertical phone screen.
Prompt enhancer you can switch off
A few words can be fleshed out by the enhancer, or turn rewriting off and a precise prompt is followed exactly as written.
Failed runs cost nothing
If a job errors out, times out or is blocked by moderation, the credits go straight back to your balance, so only completed clips are billed.
Pika H3 Flex: your questions, answered
The essentials on the model, credit pricing, clip length and running it yourself, in plain language.
What is Pika H3 Flex, and when did it arrive?
It is Pika's retrained MiniMax H3, released on 29 October 2026: six-step sampling, 5–15s clips at 24 fps, stereo sound from the same pass, and openly available LoRA weights.
Is this the official Pika website?
No — this is an independent browser studio powered by the Pika H3 Flex model, offering credits, automatic refunds and a download history. It has no affiliation with Pika Labs or MiniMax.
What does a single video cost in credits?
Pricing is per second: 2 credits at 480p, 4 at 768p, 7 at 1080p, 8 at 2K and 16 at 4K. So a 5s 768p clip is 20 credits and a 15s 4K clip is 240, shown before you start.
What is the maximum clip length?
A single render runs 5, 10 or 15 seconds at 24 fps; longer sequences are assembled from several generations, shot by shot.
Can it be run locally in ComfyUI?
You can: the LoRA weights load onto the 33B base in ComfyUI or diffusers. But a 5s 480p clip wants roughly 66–69 GiB of VRAM and 211 GB of disk, which is why most people stay on the hosted version.
How do I get a character to speak with matching lip sync?
Wrap the exact line in quotation marks, name who is speaking, then list voice, ambience and effects after Sound:. Speech and lip movement are produced as one.
Make your first Pika H3 Flex clip
Write the shot and its sound, choose 5, 10 or 15 seconds, then save an MP4 with the audio already in sync. No free tier: from $9.90 one-time or $11.90/mo billed yearly, with failed renders refunded.