The core of the movie-making process here was prompting the AI models and getting clips back, Alimzhanov said. Each prompt would generate about 15 seconds of footage. Those 15 seconds needed to be generated a number of times, with tweaks to the prompt to get the best possible version. The first 25 minutes of the movie required 16,181 initial video generations, which ended up as 253 final shots. One of the biggest difficulties in making longer-form films with AI is maintaining consistency across the outputs. AI models can be unpredictable, and a feature-length film can't have scenes that look completely different from one moment to the next.
Because of that, every prompt had to be extremely long and detailed. Each one would typically start with a prefix that defined requirements like style (8k IMAX, photorealistic), lighting (natural light only, "contre-jour" backlight, camera on shadow side) and the type of camera it should look like it was being shot on ("cine lens," 180-degree shutter motion blur). The lighting was key to avoiding the AI sheen that typically gets branded as "slop," said Alimzhanov. AI-generated video tends to over-light scenes in an unnatural way. That prefix would also have to remind the AI to obey the laws of physics with wording like: "gravity and inertia respected -- mass has real weight, correct contact shadows, no floating props." The individual prompts were, on average, 3,000 words each.
One aspect of what Higgsfield has built, and sells to clients, is an AI tool that generates these complex, detailed prompts. Users can enter a page from the original script, and the Higgsfield tool will return with a prompt that could be thousands of words long, designed to create production-quality outputs. And all that prompting is how the company racked up a $400,000 AI compute bill on the project. Co-founder and CEO Alex Mashrabov, however, noted that working with "cloud" providers, like Nebius and CoreWeave, rather than big hyperscalers, helped it keep costs from going even higher. You can watch the trailer for Hell Grind on YouTube and judge the results for yourself.
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