The infrastructure of Hollywood visual effects is shifting beneath our feet, and it’s not happening quietly. Daniel Seah, CEO of Weta FX, revealed at the Taiwan Creative Content Fest that major studios have flipped their stance on generative AI in less than a year. Early last year, legal departments banned GenAI outright. By the third quarter of 2026, the message was blunt: “If you don’t have an AI strategy, don’t bother to work with us.” This isn’t about replacing artists; it’s about workflow efficiency and vendor compliance in a rapidly changing pipeline.

The Pivot From Ban to Mandate

Seah detailed the rapid evolution of client demands, noting that the Big Four studios and streaming platforms initially prohibited any GenAI use. Mid-year, they allowed it only with pre-approval and limited vendor lists. The turning point came when clients began asking specifically about money saved. This pressure drove Weta to partner with Moonshine Studio, a Taiwanese animation outfit that moved faster on GenAI adoption due to fewer client restrictions and Taiwan’s national AI strategy. The partnership aims to enhance workflows rather than cut staff, focusing on tools that refine stories across long-form content timelines, not just short-form clips.

Building the Right Harness, Not Just Models

Weta CTO Kimball Thurston clarified that the company isn’t chasing the latest chatbot trends. They are building custom AI models for world modification and recreation, distinct from general-purpose LLMs. The focus is on the “artist layer,” or what Thurston critically calls the “harness.” While Weta uses external video models like Kling AI and ByteDance’s Seedance where permitted, security constraints require these to be hosted outside China. Thurston dismissed gas-powered data centers as “bad engineering,” highlighting Weta’s own award-winning waterless cooling system as a more sustainable infrastructure choice for the AI-heavy future of VFX.

Open Source and Metadata Tracking

Under the hood, Weta has been running an open-source project called the Rongotai Model Train Club for 18 months. This tool tracks refinement and LoRA training, writing usage details directly into image metadata. This ensures transparency about which datasets define a model, aligning with efforts by the Visual Effects Society’s Technology Committee and MovieLabs. VFX supervisor Sheldon Stopsack emphasized that new tools must integrate with existing motion-capture pipelines to maintain creative control. The goal remains clear: technology serves the filmmaker’s vision, not the other way around, ensuring actors’ performances—whether as humans or Na’vi—remain the focal point.

Key Takeaways

  • Studios now mandate AI strategies for VFX vendor contracts, shifting from bans to efficiency requirements.
  • Weta FX partnered with Moonshine Studio to accelerate GenAI workflow integration without replacing artists.
  • Custom AI models focus on long-form content timelines, avoiding the limitations of short-form video generators.
  • The Rongotai Model Train Club project ensures dataset transparency via metadata, supporting industry standards.
  • Sustainable infrastructure, like waterless cooling, is critical as AI demands increase data center power usage.

The Bottom Line

The era of treating GenAI as a novelty is over; it is now a compliance requirement for survival in the VFX market. Studios are forcing vendors to build sustainable, transparent, and artist-centric AI pipelines or face exclusion from major projects.