Ace Step Audio Inpaint

Ace Step Audio Inpaint

Playground

ACE-Step Audio Inpaint edits a specific audio segment to change lyrics or style while preserving the surrounding audio. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

ace-step/audio-inpaint 🎧

ACE-Step Audio Inpaint is a powerful music and audio editing model developed by WaveSpeedAI. It enables precise, intelligent modification of selected time ranges within an existing audio clip — perfect for fixing, remixing, or creatively reimagining tracks without re-generating the whole piece.

🌟 Key Features

• 🎯 Precise Segment Editing Modify only the section you want — define start and end times to edit exactly the range you need.

• 🎵 Seamless Audio Blending New content merges naturally with surrounding audio for smooth, undetectable transitions.

• 🕒 Flexible Timing Control Choose whether your start or end times are relative to the beginning or end of the track.

• 🎶 Style & Lyric Adaptability Add new instrumentation, effects, or lyrics while preserving the overall flow and tone.

• ⚙️ Controlled Variation Adjust how much the regenerated section diverges from the original using seed and creative parameters.

⚙️ Parameters

💡 Use Cases

• 🎧 Repair or refine — Fix errors or off-beat moments in specific sections.
• 📝 Rewrite lyrics — Try new vocal phrasing or emotional tone.
• 🎚 Remix segments — Replace or restyle a part of a song without altering the rest.
• 🎬 Audio storytelling — Modify voiceovers or sound effects within a fixed-length clip.

💰 Pricing

# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/ace-step/audio-inpaint" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "start_time_relative_to": "start",
    "start_time": 0,
    "end_time_relative_to": "start",
    "end_time": 30,
    "lyrics": "",
    "seed": -1
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"