Every model generate runs, and the fields each takes. A request is model plus these fields; the API validates it and answers a field it cannot take with what to fix (local models are checked by the app the same way). Models of a kind share one set of fields (every image model takes prompt, images, aspectRatio, …), and each model narrows them: the values it offers are in its row. Leave a field out for the model's default. Files are { "path": … } (see generate).
| Kind |
Models |
Makes |
| Image |
nano-banana-2.1, nano-banana-pro, gpt-image-2.5-sunburst, nano-banana-2, seedream-5.0-pro, flux-3-image, flux-2-pro, grok-imagine-image-2.0, flux-2-klein, krea-2-large |
images from a prompt, or edits of reference images |
| Video |
veo-3.1, veo-3.1-fast, kling-3-pro, kling-o3-pro, seedance-2.5, wan-3.0, minimax-h3, minimax-h3-max, flux-3-video, grok-imagine-video-1.5 |
a clip from a prompt, optionally from a start (and end) frame |
| Audio |
elevenlabs-music, elevenlabs-sfx |
music, sound effects |
| Voice |
elevenlabs-v4, elevenlabs-v3, gemini-3.8-flash-tts |
speech |
| Tools |
bria-rmbg-2.0, seedvr-2, bytedance-upscaler, universal-3.5-pro, qwen3.8-omni-flash |
one file in, one file out |
| Local |
sam-2.1 |
runs on this machine, free: an object's mask, tracked through footage |
| Field |
Type |
Description |
prompt |
string, required |
what to make, or how to change the reference images; up to 32,000 characters |
images |
{ path }[] |
reference images, or images to edit; up to the model's limit below |
aspectRatio |
string |
output width:height, from the model's row |
resolution |
"1K" | "2K" | "4K" |
long edge of about 1024, 2048 or 4096 px, from the model's row; higher costs more |
count |
integer |
images to make, 1–10 (default 1); each is its own file and is charged |
| Model |
|
References |
Aspect ratios |
Resolutions |
nano-banana-2.1 |
Nano Banana 2.1 — Google's newest, sharper edits at Flash cost |
14 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K, 2K, 4K |
nano-banana-pro |
Nano Banana Pro — pro control, readable text, ultra consistent |
14 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K, 2K, 4K |
gpt-image-2.5-sunburst |
GPT Image 2.5 Sunburst — precise detail, strong text, true edits |
16 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K |
nano-banana-2 |
Nano Banana 2 — fast, high quality, flexible edits |
14 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K, 2K, 4K |
seedream-5.0-pro |
Seedream 5.0 Pro — lifelike scenes, precise multi-image edits |
14 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K, 2K |
flux-3-image |
FLUX.3 Image — BFL's flagship, sharp up to 4K |
10 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K, 2K, 4K |
flux-2-pro |
FLUX.2 Pro — frontier quality, consistent references |
8 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K |
grok-imagine-image-2.0 |
Grok Imagine 2.0 — fast, vivid, photoreal |
3 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K, 2K |
flux-2-klein |
FLUX.2 Klein — low budget, high quality, fast |
4 |
16:9, 9:16, 1:1, 4:3, 3:4 |
1K |
krea-2-large |
Krea 2 Large — raw, textured, artistic looks |
1 |
16:9, 9:16, 1:1, 4:3 |
1K |
The aspect ratios listed work on every model in its row. Some models take more (2:3, 3:2, 4:5, 5:4, 21:9, 9:21, 1:2, 2:1, 1:4, 4:1, 1:8, 8:1, 9:19.5, 19.5:9, 9:20, 20:9), and the API says when one does not.
| Field |
Type |
Description |
prompt |
string, required |
the shot: subject, action, camera, sound; up to 4,000 characters |
startFrame |
{ path } |
an image the clip starts on |
endFrame |
{ path } |
an image the clip ends on; only models with end in their row |
duration |
integer |
seconds, from the model's row |
aspectRatio |
string |
output width:height, from the model's row; a model without any takes its proportions from the start frame |
resolution |
"480p" | "720p" | "1080p" | "2K" |
from the model's row; higher costs more |
| Model |
|
Frames |
Durations (s) |
Aspect ratios |
Resolutions |
veo-3.1 |
Veo 3.1 — realistic physics, complex scenes |
start, end |
4, 6, 8 |
16:9, 9:16 |
720p, 1080p (8 s only) |
veo-3.1-fast |
Veo 3.1 Fast — the same engine, lower cost |
start, end |
4, 6, 8 |
16:9, 9:16 |
720p, 1080p (8 s only) |
kling-3-pro |
Kling 3.0 — cinematic motion with built-in audio |
start, end |
3–15 |
16:9, 9:16, 1:1 |
720p |
kling-o3-pro |
Kling 3.0 Omni — multi-modal reasoning, strong scenes |
start |
3–15 |
from the start frame |
1080p |
seedance-2.5 |
Seedance 2.5 — rich motion, lip-synced audio, up to 30 s |
start, end |
4–30 |
16:9, 9:16, 1:1, 4:3, 3:4 |
480p, 720p |
wan-3.0 |
Wan 3.0 — expressive motion, clips up to 30 s |
start |
2–30 |
16:9, 9:16, 1:1, 4:3, 3:4 |
480p, 720p, 1080p |
minimax-h3 |
MiniMax H3 — native 2K with built-in audio |
start, end |
5–15 |
16:9, 9:16, 1:1, 4:3, 3:4 |
2K |
minimax-h3-max |
MiniMax H3 Max — faster, cheaper H3 with native audio |
start, end |
5–15 |
16:9, 9:16, 1:1, 4:3, 3:4 |
480p, 720p |
flux-3-video |
FLUX.3 Video — sharp detail with native audio |
start, end |
5–20 |
16:9, 9:16, 1:1, 4:3, 3:4 |
720p, 1080p |
grok-imagine-video-1.5 |
Grok Imagine Video 1.5 — quick clips from text or a frame |
start |
1–15 |
16:9, 9:16, 1:1, 4:3, 3:4 |
480p, 720p, 1080p |
Durations given as a range take any whole second in it.
| Field |
Type |
Description |
prompt |
string, required |
the music (genre, mood, instruments, structure, lyrics) or the sound; up to 4,100 characters |
duration |
number |
seconds, within the model's range |
| Model |
|
Duration (s) |
elevenlabs-music |
ElevenLabs Music — full compositions, stems, and lyrics |
3–600 (default 30) |
elevenlabs-sfx |
ElevenLabs SFX — sound effects, seamless looping |
up to 30; left out, the model picks the length |
| Field |
Type |
Description |
prompt |
string, required |
the text to speak; up to 10,000 characters (5,000 for ElevenLabs v3). ElevenLabs v3 takes audio tags in brackets ([whispers], [laughs]); Gemini takes a style instruction before the text (Say cheerfully: …) |
voice |
string, required |
one of the model's voices, from its voice list (linked below) |
Each takes one file and returns one.
| Model |
|
Fields |
Returns |
bria-rmbg-2.0 |
Bria RMBG 2.0 — background removal |
image: { path }, required |
a PNG of the image with a transparent background |
seedvr-2 |
SeedVR2 — image upscaling |
image: { path }, required |
a PNG of the image upscaled 2× |
bytedance-upscaler |
ByteDance Upscaler — video upscaling |
video: { path }, required |
an MP4 of the video upscaled to 2K at 30 fps |
universal-3.5-pro |
AssemblyAI Universal-3.5 Pro — transcription with speaker labels (Universal-2 for languages it lacks) |
audio: { path } (audio or video) or { scene } (the scene's mix, see Scenes), required; languageCode: e.g. en, en_us, de (detected when left out) |
transcript.json: [{ text, speaker?, words: [{ text, start, end }] }], times in seconds, speakers labelled A, B, … when told apart |
qwen3.8-omni-flash |
Qwen3.8 Omni Flash — describes or answers questions about audio: speech, speakers, music, sounds |
media: { path }, required: an audio file (wav, mp3, ogg, flac, aac, m4a or aiff) up to 20 MB; prompt: what to listen for, up to 10,000 characters (a general description when left out) |
analysis.md, the answer as Markdown |
These run in the app, on this machine's GPU: no account, no credits. A job is shaped like the API's and polled the same way with job, with two fields of its own — progress (0..1 through its current phase) and details (what the model found) — and lasts only as long as the app: a job id is gone once the app restarts. The first use of a model downloads it.
| Model |
|
Makes |
Fields |
sam-2.1 |
SAM 2.1 — segments an object in a video and tracks it through the footage; size tiny (default), small, base-plus or large |
a mask file (.mask) for a <mask src> |
segment.md |