Should chirp-v5-5 use inspiration mode or custom mode?
When you only have a theme and atmosphere, submitting a prompt with custom=false is more straightforward; when you have lyrics ready or need a specific title or genre, use custom=true to submit lyric, title, and style separately. If no lyrics are provided in custom mode, lyric_prompt can be used to provide direction for lyric writing.
Can V5.5 change only the chorus and return the full song?
Yes. Use replace_section and provide the original audio_id, replacement start and end times, lyrics for the new section, and the full lyric context. replace_section_result_mode defaults to full_song, which returns two separately stitched completed songs; choose candidates to first receive unstitched clip candidates.
Does setting duration to 360 guarantee a six-minute generation?
No. duration is the desired length for custom generation and accepts integers from 10—360, but the model may generate a shorter work. Read the actual duration in the result and listen to confirm that the ending is complete; if a fixed playback length is required, edit it afterward or plan subsequent creation.
What should I note when remastering an existing song with V5.5?
When using the remaster workflow, V5 and V5.5 require variation_category to be specified, with options of high, normal, or subtle. Remastering and partial lyric replacement are different tasks; if the goal is to modify lyrics in a section, choose replace_section rather than treating remastering as lyric editing.
How do I receive V5.5 generation results?
Submit model=chirp-v5-5 to POST /suno/audios. Setting async=true lets you obtain a task_id first and then query the task; you can also set callback_url to receive results. Once complete, check the status based on state, and save the audio_url, song ID, and actual duration for later auditioning and editing.