GET

/v1/schemas/openrouter/video/videos/runway/gen-4.5

Accept:

kind inputactivity videohash ae2763c1…extracted Nov 13, 2026version currentsource upstream spec ↗

field	recorded source
schema	Source linked above. upstream-spec Source trace `0d19a8453874651361f64fbd51045d9d1d4868b39f7eb85b9866fee302c50de2` { "fetchedAt": 1794547804, "extractorVersion": "2", "verifiedAt": null }

Request body

17 properties · 1 required · 8 $defs

property	type	description	constraints
model*	enum	Model id (fixed for this model-constrained schema)	runway/gen-4.5
aspect_ratio	enum	Aspect ratio of the generated video. Omit it to use the model default, which on models with adaptive aspect ratio (e.g. BytePlus Seedance) follows the input image or video.	16:9 \| 9:16
callback_url	string	URL to receive a webhook notification when the video generation job completes. Overrides the workspace-level default callback URL if set. Must be HTTPS.	format: uri
creativity	integer	Creativity level for video upscaling models only. This parameter is not supported by video generation models.
duration	enum	Duration of the generated video in seconds, or -1 to let the provider choose the length (e.g. following an input video). -1 is only accepted by models that list it in supported_durations.	2 \| 3 \| 4 \| 5 \| 6 \| 7 · +3 more · n ≥ -1
frame_images	FrameImage[]	Images to use as the first and/or last frame of the generated video. Each image must specify a frame_type of first_frame or last_frame. Frame types supported by this model: first_frame.
input_references	InputReference[]	Reference assets to guide video generation. Accepts image, audio, and video references. Audio and video references are only honored by providers that support them (including BytePlus Seedance generation 2 and newer); other providers use image references and ig…
previous_job_id	string	ID of a completed video job to edit or extend, as returned by the submit response. The new job runs on the same model and endpoint that produced the previous one. Only models that support continuation accept this field.
prompt	string	Text prompt describing the video to generate. Optional for models that support generating a video from image input alone; required by all other models.
provider	object	Provider routing preferences (order, only, ignore) and provider-specific passthrough configuration Passthrough parameters allowed for this model: contentModeration.
resolution	enum	Resolution of the generated video	720p
seed	integer	If specified, the generation will sample deterministically, such that repeated requests with the same seed and parameters should return the same result. Determinism is not guaranteed for all providers.
session_id	string	A unique identifier for grouping related requests (e.g., a conversation or agent workflow). Used for observability grouping in Broadcast and private logging; never sent to the provider. If provided in both the request body and the x-session-id header, the body…	length ≤ 256
size	enum	Exact pixel dimensions of the generated video in "WIDTHxHEIGHT" format (e.g. "1280x720"). Interchangeable with resolution + aspect_ratio.	1280x720 \| 720x1280
trace	TraceConfig	Metadata for observability and tracing. Known keys (trace_id, trace_name, span_name, generation_name, parent_span_id) have special handling. Additional keys are passed through as custom metadata to configured broadcast destinations.
upscale_factor	number	Upscale factor for video upscaling models only. This parameter is not supported by video generation models.	n ≥ 0 · format: double
user	string	A unique identifier representing your end-user. Forwarded to Broadcast and private logging as the end-user id; never sent to the provider.	length ≤ 256

Types

8 $defs

ContentPartAudioobject

audio_url*	object
type*	enum		audio_url

ContentPartImageobject

image_url*	object
type*	enum		image_url

ContentPartVideoobject

type*	enum		video_url
video_url*	object

FrameImageobject | object

InputReferenceobject | object | object

A reference asset used to guide video generation. Image references are supported by all providers; audio and video references are only honored by providers that support them (including BytePlus Seedance generation 2 and newer).

ProviderNameenum

ProviderOptionsobject

Provider-specific options keyed by provider slug. The provider segment is case-insensitive; an endpoint tag after `/` must match the endpoint slug exactly. Only options for the matched provider are forwarded; the rest are ignored. Unrecognized keys are silentl…

01ai	object
ai21	object
aion-labs	object
akashml	object
alibaba	object
amazon-bedrock	object
amazon-bedrock/claude-on-aws	object
amazon-nova	object
ambient	object
antdigital	object
anthropic	object
anthropic/2	object
anyscale	object
arcee-ai	object
assemblyai	object
atlas-cloud	object
atoma	object
avian	object
azure	object
baidu	object
baseten	object
black-forest-labs	object
byteplus	object
centml	object
cerebras	object
chutes	object
cirrascale	object
clarifai	object
claude-on-aws	object
cloudflare	object
cohere	object
coreweave	object
cosine	object
crofai	object
crucible	object
crusoe	object
darkbloom	object
databricks	object
decart	object
deepgram	object
deepinfra	object
deepseek	object
dekallm	object
digitalocean	object
elevenlabs	object
enfer	object
fake-provider	object
featherless	object
fireworks	object
fish-audio	object
friendli	object
gmicloud	object
google-ai-studio	object
google-vertex	object
gopomelo	object
groq	object
heygen	object
huggingface	object
hyperbolic	object
hyperbolic-quantized	object
inception	object
inceptron	object
inferact-vllm	object
inference-net	object
infermatic	object
inflection	object
inocloud	object
io-net	object
ionstream	object
klusterai	object
krea	object
kt	object
lambda	object
lepton	object
liquid	object
lynn	object
lynn-private	object
makora	object
mancer	object
mancer-old	object
mara	object
meta	object
minimax	object
mistral	object
modal	object
modelrun	object
modular	object
moonshotai	object
morph	object
ncompass	object
near-ai	object
nebius	object
nex-agi	object
nextbit	object
nineteen	object
novita	object
nvidia	object
octoai	object
ollama	object
open-inference	object
openai	object
parallel	object
parasail	object
pareto-alpha	object
particle-ai	object
pearl-research	object
perceptron	object
perplexity	object
phala	object
poolside	object
primalabs	object
primeintellect	object
quiver	object
recraft	object
recursal	object
recursive	object
reflection	object
reka	object
relace	object
replicate	object
respan	object
river	object
runway	object
sail-research	object
sakana	object
sakana-ai	object
sambanova	object
sambanova-cloaked	object
scaledown	object
seed	object
sf-compute	object
siliconflow	object
sourceful	object
speechify	object
stealth	object
stepfun	object
streamlake	object
switchpoint	object
targon	object
tencent	object
tenstorrent	object
thinkingmachines	object
together	object
together-lite	object
typesafe	object
ubicloud	object
unbiased	object
upstage	object
venice	object
voyageai	object
wafer	object
wandb	object
wandb-legacy	object
xai	object
xiaomi	object
z-ai	object

TraceConfigobject

Metadata for observability and tracing. Known keys (trace_id, trace_name, span_name, generation_name, parent_span_id) have special handling. Additional keys are passed through as custom metadata to configured broadcast destinations.

generation_name	string
parent_span_id	string
span_name	string
trace_id	string
trace_name	string

Validate a payload

before you spend tokens

shell

$ curl -X POST https://modelschemas.com/v1/validate \
    -d '{"provider":"openrouter","endpointId":"videos/runway/gen-4.5","payload":{…}}'
→ {"valid": false, "errors": [{"path": "#", "keyword": "required", …}]}