Prefect Pony XL LoRA API

Introduction

It runs Prefect Pony XL, a community SDXL checkpoint merge from the Pony Diffusion lineage, and adds a LoRA slot, a guidance control and nine native SDXL aspect ratios.

Related page

Prefect Pony XL without a LoRA slot has its own page: Prefect Pony XL.

Key features

Pony-family LoRAs by direct link

The Pony ecosystem has a deep library of style and character LoRAs. Pass the direct link to a .safetensors file and a scale; nothing is uploaded to us in advance, and the file is not reviewed.

Three at once

Up to three LoRAs per request, each with its own scale. In our test three stacked at 0.8, 0.5 and 0.3 loaded together and the main style still read clearly.

Native SDXL shapes

Nine aspect ratios, each mapped to a native SDXL size from 1024 x 1024 to 1536 x 640. In our tests every one came back at exactly the requested size.

Request parameters

Pricing

Prices are in credits, the same credits you use on the website (1 credit = $0.01). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.

Each task is rounded up to whole credits, so one run at the lowest tier costs 4 credits per image ($0.04).

For an exact number before you run, send the same body to POST /jobs/quote.

Use cases

A house style for a whole set

Load a style LoRA, keep the trigger words at the front and run a list of prompts. Every image in the set shares the look.

Consistent characters

Keep a character LoRA and a seed fixed, then change only the outfit, place and light between prompts.

Prompt guide & pro tips

Score tags first

Start with score_9, score_8_up, score_7_up, then a source tag such as source_anime, a rating tag, the head count (1girl, 1boy) and the subject. Put each LoRA's trigger words at the very front.

Compare against no LoRA

Run the same prompt and seed without the LoRA. If the two images are identical, the file was trained for another base model: such LoRAs load without an error and do nothing.

Guidance around 3.5 to 7

The default 3.5 is balanced. In our tests 7 gave more contrast and saturation, 12 burnt the colours, and 1 came out washed out.

API quick start

Call the Prefect Pony XL LoRA API in three steps

1. Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
2. Send the request. POST /jobs/createTask with model prefect/pony-xl-lora/text-to-image and an input object that follows the parameter table. The response returns a task ID straight away.
3. Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "prefect/pony-xl-lora/text-to-image",
  "input": {
    "prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
    "aspect_ratio": "1:1",
    "output_format": "jpeg"
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.

Prefect Pony XL LoRA API questions

All Prefect Pony XL models

Prefect Pony XL is the same checkpoint without LoRA slots.

• Prefect Pony XL LoRA APIPony XL anime art with up to three of your LoRAsFrom 4 credits per image
• Prefect Pony XL APIAnime and illustration art from tag-style promptsFrom 3 credits per image

Other image APIs

• Qwen Image 2.1 LoRA APIQwen Image 2.1 images and edits with up to three of your LoRAsFrom 5 credits per image
• MiniMax H3 Image LoRA APIH3 stills and edits with up to three of your LoRAsFrom 7 credits per image
• Anima Turbo LoRA APIAnime art with your own style or character LoRAsFrom 3 credits per image
• Krea 2 Turbo LoRA APIKrea 2 Turbo images and restyles with your own LoRAsFrom 4 credits per image
• P-Image LoRA APIFast P-Image renders and edits with one LoRA of your ownFrom 1 credit per image
• Z-Image Base LoRA APIZ-Image Base with up to three of your own LoRAsFrom 3 credits per image

More about Prefect Pony XL LoRA

Try it

Prefect Pony XL LoRA AI Image Generator onlineCreate images with Prefect Pony XL LoRA in PopNow

Docs

Prefect Pony XL LoRA model ID and input schema in the API docsPopNow API quickstart: your first request in five minutesImage generation guide for the PopNow APIWebhooks: get Prefect Pony XL LoRA results without polling