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Higgsfield Shows Claude Opus 5.5 Sound-Designing Video in REAPER and Soundly

September 22, 2026 at 21:54 EDT

Foundation Models
AI Agents
Media Generation

Higgsfield AI says it used Claude Opus 5.5 to sound-design a video in REAPER and Soundly, adding atmospheres, whooshes, impacts and foley, then mixing the result to picture with Higgsfield. The demo turns Anthropic's new flagship model from a coding-and-agent story into a media-production test: can an AI agent assemble a professional sound pass inside the tools creators already use?

Sept. 23, 2026 · Higgsfield AI

Claude Opus 5.5 moves into audio post

Higgsfield says the model sound-designed a video in REAPER and Soundly, adding atmospheres, whooshes, impacts and foley before mixing to picture.

40%

lower typical workload cost than Opus 5

token context window for long projects

81.8%

partial OSWorld 2.0 computer-use score

input price per 1M tokens

Cost index: Opus 5.5 vs Opus 5

Opus 5.5

100

Opus 5 baseline

A 40% reduction turns a 100-unit Opus 5 workload into roughly 60 units.

What the workflow implies

Read the picture

→

Find and layer effects

→

Mix to picture

Why builders care

Long context, lower token use and stronger computer-use scores make the model fit multi-step creative tool work.

What remains open

The demo does not establish reproducibility, autonomy level or sound-design quality across longer edits.

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