Don't Transcribe it — Loom it. Loose threads become the lasting fabric in AI Context building. Structured audio understanding for AI systems — typed JSON knowledge objects, not raw transcript text. One call. Any language. Built for AI systems, RAG pipelines, and developer tools.
Pass in any media file — Signal Loom returns clean, typed JSON that AI systems can actually reason about. No more wrestling with raw transcript text.
Upload any video or audio file. We'll handle the rest.
*YouTube link ingestion is best-effort due to platform anti-bot protections. Direct file links, Google Drive, Dropbox, Box, and similar hosted files are currently the most reliable.
Structured JSON with speakers, topics, entities, and timestamps — ready for any AI pipeline.
Other transcription APIs give you plain text. Signal Loom gives you structured data that slots directly into your RAG pipeline, agent memory, or knowledge graph.
Structured output works identically regardless of source language. Build global products without localization overhead.
Every response is a strongly-typed knowledge object. Speakers, topics, entities, sentiment — all pre-parsed and ready to use.
Sub-second transcription for short clips. YouTube Live support with 15-second partial updates via WebSocket — same structured JSON as batch processing.
Generous free tier. No per-character pricing traps. Predictable pricing that scales with your usage, not your revenue.
Output is designed for AI consumption first. No post-processing needed. Just deserialize and use.
Clean REST API, official SDKs for Node/Python/Go, webhooks, OpenAPI spec, and docs you'll actually enjoy reading.
Paste a YouTube live stream URL. Get structured JSON updates every 15 seconds as the stream runs. Same schema as batch transcription — no pipeline changes required.
POST the YouTube live URL — we pipe the stream through yt-dlp → ffmpeg → Whisper in real time.
Structured JSON updates every 15 seconds. Speakers, timestamps, and text — all typed and ready for AI consumption.
Each update includes the running transcript so far. No need to stitch segments together yourself.
Stop the session at any time. A final consolidated transcript is assembled from all partial updates.
WebSocket connection receives structured partial transcripts as the stream runs.
Included in Starter plan and above. Free tier: 5 live sessions/month.
If you're building anything that needs to understand what people say — Signal Loom handles the hard part.
Give your agent real audio/video understanding. Feed structured knowledge objects directly into your agent's context window instead of raw transcript text.
AI AgentsReplace chunked text embeddings with richer signal — speakers, topics, entities, and timestamps that make retrieval dramatically more precise.
RAG PipelinesBuild organizational knowledge bases from meetings, calls, and video content. Structured output makes ingestion and querying far more reliable.
Knowledge GraphsAdd transcription to your IDE, CLI, or dev tool. Simple API, predictable pricing, and output that plays nice with any stack.
Developer ToolsStart free, scale as you grow. No surprise bills, no character limits that punish natural speech.
Need a custom volume or on-prem deployment? Talk to us.
Three steps from zero to working transcription. No configuration, no infrastructure to manage.
Pick your language. Our SDK handles authentication, retries, and response parsing automatically.
Sign up at signup.html — your free tier is active immediately, no credit card required.
One request. Your media file comes in, structured JSON comes out. That's it.