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Pika's H3 Flex video model ported to Apple Silicon Macs

By PulseAugur Editorial · [1 sources] ·

A developer has successfully ported Pika's H3 Flex model to Apple Silicon Macs using MLX, marking the first known Mac port of this technology. The H3 Flex model, originally released for NVIDIA H100s, generates video with synchronized sound. Performance tests on an M4 Max chip showed that a 5-second clip at 640x384 resolution takes approximately 5 minutes, with longer clips requiring significantly more time. The developer noted that this is a preview version with limitations, such as potential drift in characters and settings over longer durations. AI

IMPACT Enables local video generation on Apple Silicon Macs, potentially increasing accessibility for creators.

RANK_REASON Porting of an existing AI model to a new hardware platform.

Read on r/StableDiffusion →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Pika's H3 Flex video model ported to Apple Silicon Macs

How we ranked this

Signal score
4 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
Porting of an existing AI model to a new hardware platform.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
model release, product
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. r/StableDiffusion TIER_2 English(EN) · /u/Opening-Ad5541 ·

    Pika H3 Flex on Mac with MLX (timings + weights)

    <table> <tr><td> <a href="https://www.reddit.com/r/StableDiffusion/comments/1xjgijq/pika_h3_flex_on_mac_with_mlx_timings_weights/"> <img alt="Pika H3 Flex on Mac with MLX (timings + weights)" src="https://external-preview.redd.it/eXp0ZXNsdWY0bXloMRKgy0XNbplK8W7o_5U5QEdIVONTsTg7Uk…

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