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About
Longformer is the long-form editing surface for transcribed audio and video: word-level transcripts, chapters, summaries, titles, quotes, and clip suggestions on a shared timeline.
It sits in the Kosmos/Arco app suite as the place you refine Fathom/Podium-style enrichment — with a full editor shell and job library UI.
The Pitch
Transcribe anything. Edit in Longformer.
Open a job, scrub a diarized transcript, shape chapters and clips, and ship artifacts without leaving the workspace.
Progress
Editor UI shellPrototype
Unified transcription backendIn design