A song creation model from custom lyrics to section rewriting
Suno V5.5's official positioning emphasizes musical expression and personal creative style, making it suitable for refining songs with your own lyrics, vocal intentions, and style descriptions. The platform selects the model as chirp-v5-5, offering theme-based and custom-lyrics creation along with corresponding editing operations. Voices, Custom Models, and My Taste released officially are product features; it cannot be inferred solely from the model name that this platform provides all of them.
Input parameters and result formats vary by service. Use the public API for this model and follow its guide for generation, task retrieval and editing operations.
Specifications and interface features
Clarify capacity, inputs and outputs, and invocation methods before selecting a model.
Creation modes
Inspiration mode and custom mode; create vocal songs or instrumentals
Inspiration text
Prompt up to 500 characters
Custom text
Lyrics up to 5,000 characters, style up to 1,000 characters, and title up to 100 characters
Desired duration
Custom generation accepts an integer of 10—360 seconds, serving as a preference hint
Creation controls
weirdness and style_influence range from 0—1; vocal_gender can be f or m
Section rewriting
replace_section supports two return modes: full_song and candidates
Invocation and delivery
POST /suno/audios; model=chirp-v5-5; MP3 audio and JSON results
The input ranges and operating methods above apply to calls on this platform; desired duration and vocal preference do not represent hard guarantees for the finished product.
Core Capabilities
Learn what chirp-v5-5 can bring to your work.
Centered on the creator's expression
The official introduction to V5.5 emphasizes sound and personal musical direction. Clearly define the lyrical mood, vocal style, and arrangement first, so each revision revolves around one creative goal; personalized product tools and model-generated results should be understood separately.
Make local edits without remaking the entire song
Segment replacement uses the original track's audio_id and start and end times to locate the area to modify, then submits the new segment lyrics along with the full lyric context. By default, full_song stitches each of the two candidates back into the original track; when you need to preview the local result first, choose candidates, select a satisfactory segment, and then complete the stitching.
Balance style adherence and experimentation
Custom creation can use style_influence to adjust the tendency to match a style, weirdness to adjust experimentation, and set male or female vocal preferences. This is suitable for comparing different interpretation directions around the same lyrics; these settings are creative guidance, and you still need to listen to whether the melody, vocals, and arrangement meet the goal.
Use Cases
Start with specific tasks and find where the model can be effective.
Brand theme songs and event songs
Enter brand keywords, an event theme, and polished lyrics, then generate preview tracks with genres, moods, and titles. If the chorus containing the slogan is not suitable enough, you can locate and rewrite that section, delivering complete song candidates for team discussion and reducing the repetitive work of remaking the entire song for every revision.
Draft soundtracks for videos and podcasts
Use inspiration mode to describe the visual atmosphere, instruments, and rhythmic direction, and choose instrumental music to first obtain a soundtrack draft you can preview. For projects with a specific edit length, you can set the desired duration in custom mode, then edit based on the actual audio length after downloading rather than treating the generated result as a precisely timed final product.
Song drafts and chorus iterations
Organize existing lyrics into verses, bridges, and choruses to generate song drafts for discussion. When revising, clearly specify which section needs new lyrics, a style change, or a new interpretation, while preserving the full lyric context; deliver candidate segments or the stitched full track so reviewers can focus on specific differences.
How to Choose This Model
Choose based on task complexity, input materials, and expected results.
When Upgrading from V4, Consider Input Capacity
Compared with chirp-v4, chirp-v5-5 increases the custom lyrics limit from 3000 characters to 5000 characters, and the style limit from 200 characters to 1000 characters. This model is better suited for longer lyrics or detailed arrangement instructions; for short prompt tasks, make a judgment based on actual listening tests rather than inferring quality from the version number alone.
When Comparing with V5, Consider the Work Rather Than Capacity
chirp-v5-5 and chirp-v5 have the same input limits for lyrics and style, so there is no need to switch for longer text. Existing V5 projects can retain the same lyrics and style for comparative listening; when partial rewrites are needed, prioritize evaluating how the segment connects with the original track, and do not directly apply all of V6's editing capabilities to V5.5.
Getting Started: Refining the Expression of Original Songs
Plan the inputs first, then connect them to the corresponding application workflow.
Prepare Inputs
Prepare original lyrics, emotional changes, and vocal delivery, and clearly define the sonic direction before adjusting parameters.
Organize Calls and Follow-Up Workflows
Explicitly select chirp-v5-5. Use prompt for theme-based creation; for custom creation, organize lyric, style, and title according to this model's limits. Save task_id, retrieve audio_url after waiting for the completed result, and archive it together with the work ID and creation settings.
Practical Task Example: Refining the Expression of Original Songs
Design tasks directly from the following inputs and acceptance priorities.
Suggested Task
Generate two expressions of the same song: softly narrated verses and a firmly developed chorus; change only one style or vocal preference.
Key Checks
Check lyric clarity, verse-chorus emotion, and consistency across the whole song; officially released product features such as Voices and Custom Models must be used according to the corresponding operations on this platform.
Usage Boundaries
Before formal use, understand the output quality and capability scope.
The expected duration is not an exact output instruction, and the finished result may be shorter than the set value; vocal gender is also a preference and is not guaranteed to be strictly followed. When a fixed ad length, precise timing, or a specified vocal effect is needed, allow room for auditioning, editing, and regeneration, and rely on the actual returned duration.
Clip candidates are not the same as a complete song. Content returned by candidates may include a small amount of context, so candidate length cannot be inferred solely from the requested start and end range; before delivery, check replacement boundaries, lyric transitions, and the complete audio to avoid treating an unstitched partial result as the final song.
The interface includes multiple audio operations, but being able to submit parameters does not mean every operation produces the same effect on V5.5. Generated requests use mp3 for audio_format; WAV, MIDI, and similar formats require their respective processing workflows and cannot be obtained directly by rewriting this field, nor does this mean the corresponding native formats are available during generation.
Frequently Asked Questions
Answers to common questions when using chirp-v5-5.
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.