models

Pika 2.1

Markdown · JSON

Pika 2.1

Pika 2.1 creates a video from a prompt with optional image guidance. Describe the shot and source roles, then retrieve the original operation’s completed video through Ailoot.

About the model

This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below.

Select pika-21 with model and prompt in /v1/videos. The request accepts image as a string or an array of up to ten strings and also exposes negative_prompt. Use the prompt to describe the subject, setting, visible action and camera direction.

For a text-led scene, establish the composition before adding motion. For an image-guided clip, explain what the supplied material contributes and which subject details should remain recognisable. Keep one clear action and end state in the brief so a later variation can target a specific change. Retain the source material and selected prompt with the result.

Submit the shot once through /v1/videos, retain the returned request ID and poll that original operation through /v1/videos/{request_id}. Save every completed video output and the complete response before reviewing the action, framing and end state against the brief.

Ailoot Ultra · Video POST /v1/videos pika-21

pika-21

Other /pika-21

Overview

Pika 2.1 creates a video from a prompt with optional image guidance. Describe the shot and source roles, then retrieve the original operation’s completed video through Ailoot.

Accepted inputs
Text · Images
Results
Video

Available in Ailoot · inputs & methods

Ailoot Ultra · Video POST /v1/videos
Input types
text, image
Output types
video
FieldTypeRequirementValues & limitsDefault
FieldmodelTypestringRequirementRequiredValues & limits
pika-21
Conditions: Use this exact Ailoot routing selector.
Default—
FieldimageTypestring or array<string>RequirementOptionalValues & limits
Conditions: Use the selected-model documented field and listed choices; omit an unspecified optional value.
Default—
FieldpromptTypestringRequirementRequiredValues & limits
Conditions: Use the selected-model documented field and listed choices; omit an unspecified optional value.
Default—
Fieldnegative_promptTypestringRequirementOptionalValues & limits
Conditions: Use the selected-model documented field and listed choices; omit an unspecified optional value.
Default—
Method parameters and lifecycle
ParameterContract
Parametercontent_typeContractapplication/json
ParameterrequiredContractmodel, prompt
ParameteroptionalContractimage, negative_prompt
Parametermaterial_typesContracttext, image
ParameterconditionsContractUse this exact Ailoot routing selector., Use the selected-model documented field and listed choices; omit an unspecified optional value., Use the selected-model documented field and listed choices; omit an unspecified optional value., Use the selected-model documented field and listed choices; omit an unspecified optional value.

Method aliases: /v1/videos/generations

Lifecycle: submit_once_poll_original

GET /v1/videos/{request_id}

GET /v1/videos/generations/{request_id}

GET /v1/videos/{request_id}/content

GET /v1/media/assets

GET /v1/media/assets/{asset_id}

Pricing

How the final charge is calculated

The displayed rates estimate the cost before generation. The final charge is calculated from the cost recorded for the original generation. Measured output duration and forecast quantities are not the final billable quantity.

Tariff references do not add request options. Supported parameters are listed for the selected method.

Fast mode
Not specified When fast mode is selected
Flex mode
Not specified When flex mode is selected
Maximum reasoning effort
Not specified When maximum reasoning effort uses the default adjustment

Estimated rates for comparison

Prices by configuration

Match each charge to the conditions shown. Use one rate for each set of alternative configurations.

ConfigurationRate scheduleForecast quantityBilling quantityCharge
ConfigurationBase token ratesRate scheduleBase rateForecast quantity—Billing quantity—Charge
Input · Input tokens · Estimate for comparison only — / 1K tokens
Output · Output tokens · Estimate for comparison only — / 1K tokens
Input · Cache read · Estimate for comparison only — / 1K tokens
Input · Cache write · Estimate for comparison only — / 1K tokens
Input · Cache write, 1 hour · Estimate for comparison only — / 1K tokens
ConfigurationPer requestRate schedule—Forecast quantity—Billing quantityone requestCharge
Input · Estimate for comparison only $1.2 per request
ConfigurationEstimated generation costRate schedule—Forecast quantityone generation estimateBilling quantity—Charge
Output · Estimated generation cost · Estimate for comparison only $1.2 estimate before generation

This estimate is not an additional charge or a fixed rate for the completed generation.

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. How reservation and settlement work →

Example requests

Ailoot Ultra · Video

curl · create once and retain the complete resultRead the original taskSave every completed owned asset
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
export AILOOT_API_KEY
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
p=json.loads('{"model": "pika-21", "prompt": "A cat is walking on grass."}')

Path("request.json").write_text(json.dumps(p,ensure_ascii=False))
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/videos \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
# Submit once. Retain the complete result, original identifiers and every response header.
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
export AILOOT_API_KEY
python3 - <<'PY_STATUS'
import json,os,subprocess
from pathlib import Path
from urllib.parse import urljoin,urlsplit
r=json.loads(Path("result.json").read_text())
u=urljoin("https://api.ailoot.ai",r["polling_url"])
p=urlsplit(u)
if p.scheme!="https" or p.netloc!="api.ailoot.ai" or p.username or p.password:
    raise SystemExit("Unexpected returned polling URL; preserve the response")
subprocess.run(["curl","--fail-with-body","--silent","--show-error",u,"-H","Authorization: Bearer "+os.environ["AILOOT_API_KEY"],"-D","status-headers.txt","-o","status.json"],check=True)
# Read this same original polling_url again while pending.
# Preserve unknown/result_pending_check; do not repeat creation.
PY_STATUS
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
export AILOOT_API_KEY
python3 - <<'PY_ASSETS'
import json,os,subprocess
from pathlib import Path
from urllib.parse import urljoin,urlsplit
r=json.loads(Path("status.json").read_text())
roles={}
def visit(v,path=""):
    if isinstance(v,dict):
        for k,x in v.items(): visit(x,path+"/"+k)
    elif isinstance(v,list):
        for i,x in enumerate(v): visit(x,path+"/"+str(i))
    elif isinstance(v,str):
        u=urljoin("https://api.ailoot.ai",v); p=urlsplit(u)
        if p.scheme=="https" and p.netloc=="api.ailoot.ai" and not p.username and not p.password and p.path.startswith("/v1/media/assets/") and p.path.endswith("/content"):
            roles.setdefault(u,[]).append(path)
visit(r)
if not roles: raise SystemExit("No completed owned assets; retain the original status")
manifest=[]
for i,(u,paths) in enumerate(roles.items()):
    target=Path(f"asset-{i}.bin")
    subprocess.run(["curl","--fail-with-body","--silent","--show-error",u,"-H","Authorization: Bearer "+os.environ["AILOOT_API_KEY"],"-o",str(target)],check=True)
    raw=target.read_bytes()
    if not raw: raise SystemExit("Empty asset; retain original status and metadata")
    ext="glb" if raw[:4]==b"glTF" else "png" if raw[:8]==b"\x89PNG\r\n\x1a\n" else "jpg" if raw[:3]==b"\xff\xd8\xff" else "webp" if raw[:4]==b"RIFF" and raw[8:12]==b"WEBP" else "mp4" if raw[4:8]==b"ftyp" else "bin"
    name=f"asset-{i}.{ext}"
    if target.name!=name: target.rename(name)
    manifest.append({"file":name,"response_paths":paths,"bytes":len(raw)})
Path("asset-manifest.json").write_text(json.dumps(manifest,indent=2))
print("Saved",len(manifest),"unique owned assets; every response role retained")
PY_ASSETS

Receive and save results

Ailoot Ultra · Video

  • GET /v1/videos/{request_id}
  • GET /v1/videos/generations/{request_id}
  • GET /v1/videos/{request_id}/content
  • GET /v1/media/assets
  • GET /v1/media/assets/{asset_id}
Keep all completed results

Save every completed video or returned file; retrieve every actual returned asset URL.

Retain the complete response and headers, original identifiers, every actual output and all usage/accounting fields. Save each unique owned asset and retain every role pointing to it.

If the original response needs checking

Keep the returned public task or operation id and all headers. Read only the original task; unknown or result_pending_check does not authorize another creation.

Response fields
FieldType
FieldidTypestring
Fieldpolling_urlTypestring
Fieldprovider_task_idTypestring
Fieldtask_idTypestring
FieldstatusTypestring
Fieldvideo_urlTypestring
Errors and next steps
ResponseConditionNext step
Response400 · invalid_request_errorConditionA required field, model selector, type or input representation is invalid.Next stepInspect the returned validation detail before preparing a separate request.
ResponseConditionThe original request or result is unknown or requires a check.Next stepKeep original identifiers and headers; read only supported status/library records. Do not submit creation again.

Aliases

Model aliases

Ailoot Ultra pika-21

Method path aliases

/v1/videos/generations

Related caller IDs

pika-21

FAQ · Pika 2.1
What inputs and results are available?

POST /v1/videos · pika-21: text, image → video

Which fields does the request use?

POST /v1/videos · pika-21: model, image, prompt, negative_prompt

More details

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Spending in your history
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