Audio Merge API

Audio Merge API — Concatenate up to 30 audio clips into a single MP3 with even loudness.

What you get

• POST /v1/audio/merge — primary endpoint.
• X-API-Key authentication, per-key rate limits, audit log.
• OpenRouter-backed where AI is involved — no model keys to manage on your side.
• Interactive Swagger docs at api-audio-merge.knowlez.com/docs.

Plans

• Starter — $9/mo · 2,000 ops included · $0.005/op overage.
• Pro — $29/mo · 20,000 ops included · $0.003/op overage.