Kollektive audio first look

Five audio models through the real Kollektive stage adapters on one disposable rented GPU: 51 recorded cases, 48 with audio. Listening copies are MP3 encodes of the verified WAV outputs. Every case shows its recorded outcome; quality_failure is yours to assign below.

0 verdicts

Outcomes

basketcompletedunsupported_runtimeunsupported_modelruntime_limitmodel_limitfailedskippedquality_failure
chatterbox3
kokoro29
kokoro-cpu10
yue29
completed
Valid output produced by the real stage adapter.
unsupported_runtime
Our adapter does not implement the operation; the model may.
unsupported_model
The upstream checkpoint does not support the operation.
runtime_limit
Our implementation restricts an otherwise potentially supported operation.
model_limit
Documented or demonstrated upstream limitation.
failed
Execution attempted and did not complete (error, timeout, out of memory).
skipped
Not attempted: deadline, failed Source case or earlier escalation step.
quality_failure
Technically valid output that failed the owner's listening evaluation (assigned in review).

Songs: ACE-Step 1.5 Turbo and YuE2-3B on the same eight briefs

Morning After Rain

English, warm piano pop, expressive female voice, acoustic piano, rounded bass, light drums, lyrical memorable melody, unhurried phrasing, 88 BPM

lyrics
[Verse]
Streetlights fade along the lane
Footsteps keep the time of rain
Fold the night and leave it there
Morning has a sky to spare

[Chorus]
Let the morning find us here
Every window running clear
Hold a little room for light
We will sing beyond the night

[Verse]
Coffee steam and open doors
Someone sweeping yesterday's floors
Nothing here is only mine
Every hand is in the line

[Chorus]
Let the morning find us here
Every window running clear
Hold a little room for light
We will sing beyond the night

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

114.1 s of audio · inference 88.1 s · cold load 18.5 s · peak VRAM 7.9 GiB

Neon Highway

English, synthwave, confident male voice, analog synth arpeggios, gated reverb drums, driving bass, 110 BPM, nostalgic

lyrics
[Verse]
Tail lights drawing lines of red
Radio says the storm's ahead
Dashboard glow and empty seats
Counting mile posts, counting beats

[Chorus]
Neon highway, take me far
Past the last unbroken star
I don't need to know the end
Just the curve beyond the bend

[Verse]
Every city is a wave
Every exit is a cave
I keep driving, I keep still
Motion is my only will

[Chorus]
Neon highway, take me far
Past the last unbroken star
I don't need to know the end
Just the curve beyond the bend

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

197.2 s of audio · inference 112.1 s · warm load 0.0 s · peak VRAM 8.4 GiB

Kitchen Table Hymn

English, acoustic folk, intimate female voice, fingerpicked steel-string guitar, soft upright bass, sparse, 72 BPM

lyrics
[Verse]
There's a chip in the cup you gave me
There's a crack where the light gets through
And I pour the tea too early
So it's cold by the time it's due

[Chorus]
Sing it low at the kitchen table
Sing it slow so the walls can hear
We were never rich or able
But we never left from here

[Verse]
There's a map with a town we circled
There's a coat that you never wore
And I keep the door unlatched
Like you're coming back for more

[Chorus]
Sing it low at the kitchen table
Sing it slow so the walls can hear
We were never rich or able
But we never left from here

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

154.2 s of audio · inference 85.3 s · warm load 0.0 s · peak VRAM 8.3 GiB

Built From This

English, boom bap hip hop, confident male rap, dusty drum break, upright bass sample, vinyl crackle, 92 BPM

lyrics
[Verse]
Started with a sketch on the back of a receipt
Pinned it to the wall where the makers meet
Nobody asked me who I knew
They asked me what I'm gonna build from this, so I built it true
Took a broken beat and a borrowed bass
Left the credits in, kept the lineage in place

[Chorus]
Built from this, built from that
Every line I write, I'm handing back
No locked doors, no private key
What you make from mine, you make for free

[Verse]
Queue is long but the queue is fair
Put your name down, put your work out there
Credits spent is a promise kept
Every hour counted, every hour swept

[Chorus]
Built from this, built from that
Every line I write, I'm handing back
No locked doors, no private key
What you make from mine, you make for free

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

76.6 s of audio · inference 42.3 s · warm load 0.0 s · peak VRAM 8.2 GiB

Iron Choir

English, melodic metal, powerful male vocals, dual harmonised electric guitars, double kick drums, soaring anthemic chorus, 150 BPM

lyrics
[Verse]
Forged beneath a sleeping sky
Every hammer asking why
Sparks are falling like a rain
Nothing tempered feels no pain

[Chorus]
Iron choir, raise your voice
Every scar was once a choice
Stand together, stand as one
We are iron, we are the sun

[Verse]
They said the furnace would go cold
They said the story had been told
But the bellows breathe again
And the anvil counts to ten

[Chorus]
Iron choir, raise your voice
Every scar was once a choice
Stand together, stand as one
We are iron, we are the sun

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

239.2 s of audio · inference 141.8 s · warm load 0.0 s · peak VRAM 8.6 GiB

Last Call at the Blue Room

English, jazz ballad, smoky female voice, brushed drums, upright bass, soft piano chords, muted trumpet, 62 BPM

lyrics
[Verse]
The barman's stacking chairs on tables
The trumpet's packing up his case
And I'm still holding half a story
And the other half of your face

[Chorus]
Last call at the Blue Room
One more for the road we never took
Leave the light on in the doorway
I'll be the shadow in the book

[Verse]
They'll sweep the ashes with the evening
They'll pour the river down the drain
But the song we didn't finish
Is the one I hum in the rain

[Chorus]
Last call at the Blue Room
One more for the road we never took
Leave the light on in the doorway
I'll be the shadow in the book

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

172.6 s of audio · inference 89.7 s · warm load 0.0 s · peak VRAM 8.3 GiB

Hiljainen Katu

Finnish, melancholic indie pop, soft male voice, clean electric guitar, warm synth pad, light drums, 96 BPM

lyrics
[Verse]
Katulamput syttyy yksitellen
Lumi peittää jäljet eilisen
Kannan kahvin kahdelle
Vaikka tiedän, ettet tule

[Chorus]
Hiljainen katu, hiljainen talo
Ikkunassa yksi valo
Jos sä joskus kuljet tästä
Jätän oven auki

[Verse]
Radiossa vanha laulu soi
Sanat muistan, sävel unohtui
Kaupunki hengittää hitaasti
Ja minä sen mukana

[Chorus]
Hiljainen katu, hiljainen talo
Ikkunassa yksi valo
Jos sä joskus kuljet tästä
Jätän oven auki

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

143.6 s of audio · inference 76.4 s · warm load 0.0 s · peak VRAM 8.3 GiB

Saturday Engine

English, upbeat funk, group vocals with call and response, punchy horn section, slap bass, wah guitar, tight drums, 112 BPM

lyrics
[Verse]
Got a Saturday engine and it won't sit still
Got a pocket full of nothing and a window sill
Turn the radio up till the neighbours knock
We don't need a reason, we just need a clock

[Chorus]
Move it! (move it) to the left
Shake it! (shake it) till there's nothing left
Saturday engine, Saturday sun
Everybody's working and it feels like fun

[Verse]
Bass line walking like it owns the street
Horns are talking to the people's feet
If you came to watch, then you came too late
Get up off the curb, come and celebrate

[Chorus]
Move it! (move it) to the left
Shake it! (shake it) till there's nothing left
Saturday engine, Saturday sun
Everybody's working and it feels like fun

ACE-Step, 60 s

not run in this session

YuE2, full planning

completed YuE2-3B · NVIDIA A40

WAV original

91.3 s of audio · inference 54.1 s · warm load 0.0 s · peak VRAM 8.4 GiB

Speech: Kokoro-82M and Chatterbox on the same eight sentences

Kokoro voices on the GPU and on the CPU; Chatterbox with its built-in voice and four public-domain reference readers.

t1

Every valid Work enters Commons, and every Queue submission is a commitment. Please read both before you press Generate.

t1 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

7.8 s of audio · inference 0.9 s · cold load 2.4 s

t1 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

8.8 s of audio · inference 0.4 s · warm load 0.0 s

t1 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

7.6 s of audio · inference 0.3 s · warm load 0.0 s

t1 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

7.8 s of audio · inference 1.6 s · cold load 2.1 s

t1 as af_heart at speed 0.85

completed Kokoro-82M · NVIDIA A40

WAV original

8.9 s of audio · inference 0.4 s · warm load 0.0 s

t1 as af_heart at speed 1.2

completed Kokoro-82M · NVIDIA A40

WAV original

7.0 s of audio · inference 0.3 s · warm load 0.0 s

t1 with builtin voice

failed Chatterbox · NVIDIA A40

TypeError: 'NoneType' object is not callable

t1 with lovecraft-essay voice

failed Chatterbox · NVIDIA A40

TypeError: 'NoneType' object is not callable

t1 with thoreau-davisdrake voice

failed Chatterbox · NVIDIA A40

TypeError: 'NoneType' object is not callable

t1 with zimmermann-volta voice

not run in this session

t1 with silentnight-eastman voice

not run in this session

t2

Good morning, Helsinki. It is minus four degrees at seven fifteen, with light snow expected after two o'clock and winds of twelve metres per second.

t2 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

10.2 s of audio · inference 0.4 s · warm load 0.0 s

t2 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

10.9 s of audio · inference 0.4 s · warm load 0.0 s

t2 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

9.6 s of audio · inference 0.4 s · warm load 0.0 s

t2 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

10.2 s of audio · inference 2.2 s · warm load 0.0 s

t2 with builtin voice

not run in this session

t2 with lovecraft-essay voice

not run in this session

t2 with thoreau-davisdrake voice

not run in this session

t2 with zimmermann-volta voice

not run in this session

t2 with silentnight-eastman voice

not run in this session

t3

No, wait. I didn't mean it like that. Can we just start over, please?

t3 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

4.3 s of audio · inference 0.2 s · warm load 0.0 s

t3 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

4.9 s of audio · inference 0.2 s · warm load 0.0 s

t3 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

4.4 s of audio · inference 0.2 s · warm load 0.0 s

t3 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

4.3 s of audio · inference 0.7 s · warm load 0.0 s

t3 with builtin voice

not run in this session

t3 with lovecraft-essay voice

not run in this session

t3 with thoreau-davisdrake voice

not run in this session

t3 with zimmermann-volta voice

not run in this session

t3 with silentnight-eastman voice

not run in this session

t4

She sells seashells by the seashore, and the shells she sells are surely seashells.

t4 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

5.0 s of audio · inference 0.2 s · warm load 0.0 s

t4 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

5.6 s of audio · inference 0.3 s · warm load 0.0 s

t4 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

5.2 s of audio · inference 0.3 s · warm load 0.0 s

t4 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

5.0 s of audio · inference 0.8 s · warm load 0.0 s

t4 with builtin voice

not run in this session

t4 with lovecraft-essay voice

not run in this session

t4 with thoreau-davisdrake voice

not run in this session

t4 with zimmermann-volta voice

not run in this session

t4 with silentnight-eastman voice

not run in this session

t5

On the 3rd of March 2026, Dr. Aino Virtanen presented 1,284 measurements to the committee in under forty minutes.

t5 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

9.5 s of audio · inference 0.4 s · warm load 0.0 s

t5 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

10.2 s of audio · inference 0.4 s · warm load 0.0 s

t5 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

9.1 s of audio · inference 0.4 s · warm load 0.0 s

t5 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

9.5 s of audio · inference 1.7 s · warm load 0.0 s

t5 with builtin voice

not run in this session

t5 with lovecraft-essay voice

not run in this session

t5 with thoreau-davisdrake voice

not run in this session

t5 with zimmermann-volta voice

not run in this session

t5 with silentnight-eastman voice

not run in this session

t6

Have you ever wondered what a ten-thousand-year-old oak would say if it could speak?

t6 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

4.8 s of audio · inference 0.2 s · warm load 0.0 s

t6 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

5.3 s of audio · inference 0.3 s · warm load 0.0 s

t6 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

4.7 s of audio · inference 0.2 s · warm load 0.0 s

t6 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

4.8 s of audio · inference 0.8 s · warm load 0.0 s

t6 with builtin voice

not run in this session

t6 with lovecraft-essay voice

not run in this session

t6 with thoreau-davisdrake voice

not run in this session

t6 with zimmermann-volta voice

not run in this session

t6 with silentnight-eastman voice

not run in this session

t7

Breathe in slowly. Hold it for a moment. Now let it go, and notice how the room feels quieter than before.

t7 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

6.9 s of audio · inference 0.3 s · warm load 0.0 s

t7 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

7.7 s of audio · inference 0.3 s · warm load 0.0 s

t7 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

6.8 s of audio · inference 0.3 s · warm load 0.0 s

t7 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

6.9 s of audio · inference 1.1 s · warm load 0.0 s

t7 with builtin voice

not run in this session

t7 with lovecraft-essay voice

not run in this session

t7 with thoreau-davisdrake voice

not run in this session

t7 with zimmermann-volta voice

not run in this session

t7 with silentnight-eastman voice

not run in this session

t8

The river remembers every stone it carried, long after the mountain has forgotten them.

t8 as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

5.2 s of audio · inference 0.3 s · warm load 0.0 s

t8 as am_michael

completed Kokoro-82M · NVIDIA A40

WAV original

6.0 s of audio · inference 0.3 s · warm load 0.0 s

t8 as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

5.3 s of audio · inference 0.3 s · warm load 0.0 s

t8 as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

5.2 s of audio · inference 0.9 s · warm load 0.0 s

t8 with builtin voice

not run in this session

t8 with lovecraft-essay voice

not run in this session

t8 with thoreau-davisdrake voice

not run in this session

t8 with zimmermann-volta voice

not run in this session

t8 with silentnight-eastman voice

not run in this session

Sound effects: MOSS-SoundEffect v2

Crowd applause in a large concert hall, building then fading (10 s)

not run in this session

A glass bottle rolling across concrete and shattering (10 s)

not run in this session

Campfire crackling with a gentle night wind (10 s)

not run in this session

A cat purring close to the microphone, occasional soft meow (10 s)

not run in this session

Church bells ringing in a small town square, pigeons taking off (10 s)

not run in this session

Busy city street, passing cars, footsteps, a distant siren (10 s)

not run in this session

A heavy wooden door creaks open slowly, then slams shut (10 s)

not run in this session

Footsteps on gravel, then climbing wooden stairs (10 s)

not run in this session

Forest at dawn, birdsong, a small stream, light wind in leaves (10 s)

not run in this session

Electric kettle boiling, rising to a rolling boil, then clicking off (10 s)

not run in this session

Typing on a mechanical keyboard, fast bursts with pauses (10 s)

not run in this session

Heavy rain striking a metal roof, distant thunder moving from left to right, occasional wind gusts, no music, no voices (10 s)

not run in this session

Ocean waves rolling onto a pebble beach, pebbles dragging back (10 s)

not run in this session

Heavy rain on a corrugated metal roof with distant thunder (10 s)

not run in this session

Spaceship engine room hum with an airlock hiss and metallic clanks (10 s)

not run in this session

Thunderstorm, close lightning strikes, heavy rain, rolling thunder (10 s)

not run in this session

A freight train passing a level crossing with warning bells (10 s)

not run in this session

Busy city street, passing cars, footsteps, a distant siren (30 s)

not run in this session

Forest at dawn, birdsong, a small stream, light wind in leaves (30 s)

not run in this session

Heavy rain striking a metal roof, distant thunder moving from left to right, occasional wind gusts, no music, no voices (30 s)

not run in this session

Ocean waves rolling onto a pebble beach, pebbles dragging back (30 s)

not run in this session

Heavy rain on a corrugated metal roof with distant thunder (10 s, second seed)

not run in this session

Heavy rain on a corrugated metal roof with distant thunder (30 s)

not run in this session

Forest at dawn, birdsong, a small stream, light wind in leaves (60 s)

not run in this session

Transform a Source clip

not run in this session

Spaceship engine room hum with an airlock hiss and metallic clanks (60 s)

not run in this session

Capability frontier

Length ladders, planner modes, step counts, longer ambience and expressive extremes. Escalation stops at the first failed step; non-attempted cases carry their classification.

Morning After Rain, 120 s

not run in this session

Iron Choir, 120 s

not run in this session

Morning After Rain, 180 s

not run in this session

Iron Choir, 180 s

not run in this session

Morning After Rain, 240 s

not run in this session

Iron Choir, 240 s

not run in this session

Morning After Rain, 60 s, 4 steps

not run in this session

t3 with lovecraft-essay, exaggeration 0.25, cfg weight 0.5

not run in this session

t3 with lovecraft-essay, exaggeration 0.9, cfg weight 0.3

not run in this session

t3 with silentnight-eastman, exaggeration 0.25, cfg weight 0.5

not run in this session

t3 with silentnight-eastman, exaggeration 0.9, cfg weight 0.3

not run in this session

t8 with lovecraft-essay, exaggeration 0.25, cfg weight 0.5

not run in this session

t8 with lovecraft-essay, exaggeration 0.9, cfg weight 0.3

not run in this session

t8 with silentnight-eastman, exaggeration 0.25, cfg weight 0.5

not run in this session

t8 with silentnight-eastman, exaggeration 0.9, cfg weight 0.3

not run in this session

Busy city street, passing cars, footsteps, a distant siren (30 s)

not run in this session

Forest at dawn, birdsong, a small stream, light wind in leaves (30 s)

not run in this session

Heavy rain striking a metal roof, distant thunder moving from left to right, occasional wind gusts, no music, no voices (30 s)

not run in this session

Ocean waves rolling onto a pebble beach, pebbles dragging back (30 s)

not run in this session

Heavy rain on a corrugated metal roof with distant thunder (30 s)

not run in this session

Forest at dawn, birdsong, a small stream, light wind in leaves (60 s)

not run in this session

Spaceship engine room hum with an airlock hiss and metallic clanks (60 s)

not run in this session

Morning After Rain, long lyrics (bridge and third verse), full planning

completed YuE2-3B · NVIDIA A40

WAV original

194.0 s of audio · inference 101.4 s · warm load 0.0 s · peak VRAM 8.5 GiB

Iron Choir, long lyrics (bridge and third verse), full planning

not run in this session

Morning After Rain, standard lyrics, melody-only planning

not run in this session

Morning After Rain, standard lyrics, planning off

not run in this session

Morning After Rain, long lyrics, melody-only planning

not run in this session

Morning After Rain, long lyrics, planning off

not run in this session

Morning After Rain, short lyrics (one verse and chorus), full planning

not run in this session

Iron Choir, short lyrics (one verse and chorus), full planning

not run in this session

Source conditioning

What a member could build from an existing Work: continuation, cover, repaint and variation through the real ACE handlers on this session's own verified outputs; unsupported paths are recorded, not forced.

Continue Morning After Rain by 60 s from its last 10 s

not run in this session

Cover Morning After Rain as melodic metal

not run in this session

Variation of Kitchen Table Hymn (same style, cover from Source, new seed)

not run in this session

Cover Iron Choir as warm piano pop

not run in this session

Repaint 20 to 40 s of Saturday Engine

not run in this session

Transform a Source clip

not run in this session

Cover from Source audio

not run in this session

Long-form speech

A 30-second paragraph and a two-minute narration. Chatterbox's single-call limit is about 40 seconds of speech; the over-limit case documents what happens, not a failure of the model.

30-second paragraph with builtin voice

not run in this session

30-second paragraph with lovecraft-essay voice

not run in this session

Two-minute narration with built-in voice, deliberately past the 1000 speech-token cap

not run in this session

30-second paragraph as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

20.1 s of audio · inference 0.8 s · warm load 0.0 s

Two-minute narration as af_heart

completed Kokoro-82M · NVIDIA A40

WAV original

73.0 s of audio · inference 2.8 s · warm load 0.0 s

Two-minute narration as bf_emma

completed Kokoro-82M · NVIDIA A40

WAV original

69.0 s of audio · inference 2.6 s · warm load 0.0 s

30-second paragraph as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

20.1 s of audio · inference 5.0 s · warm load 0.0 s

Two-minute narration as af_heart (CPU)

completed Kokoro-82M · cpu

WAV original

73.0 s of audio · inference 17.7 s · warm load 0.0 s

Cost analysis

A40 at a quoted $0.567/h; rental running to running. Nominal figures from measured inference time at the quoted rate; setup, downloads and idle time are excluded, and the provider's invoice is the only billing truth.

basketcompletedmeasured inferenceaudio producednominal GPU costper minute of audio
chatterbox00 s0 s$0.000
kokoro2915 s344 s$0.002$0.0004
kokoro-cpu1032 s147 s$0.005$0.0021
yue29791 s1383 s$0.125$0.0054