Pretrained computer vision classifier

Identify cat gender with one API call.

A pretrained cat gender classifier that sorts an image into one of 2 categories — the gender of the cat. Use the cat gender API immediately, no training required, then adapt it to your own data when you need more.

Pretrained · Nyckel-trained 2 labels out of the box Image input

Try the cat gender classifier

Drop in a photo and get the prediction back. No signup, no setup.

What this cat gender classifier recognizes

A sample of the 2 labels this pretrained classifier chooses between.

Female
Male

Need a label that isn't here? Clone the classifier into your Nyckel console and edit the label set to fit your data.

Call the cat gender API

Once you've added this classifier to your console, you get your own copy of it behind your own endpoint. Invoke it with any HTTP client:

curl

curl -X POST "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke" \
  -H "Authorization: Bearer $NYCKEL_ACCESS_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"data": "https://example.com/photo.jpg"}'

Python

import requests

# Get an access token: https://www.nyckel.com/docs/api/overview/authentication/
token = "YOUR_ACCESS_TOKEN"

response = requests.post(
    "https://www.nyckel.com/v1/functions/YOUR_FUNCTION_ID/invoke",
    headers={"Authorization": "Bearer " + token},
    json={"data": "https://example.com/photo.jpg"},
)
print(response.json())

Example response

{
  "labelName": "Female",
  "labelId": "label_...",
  "confidence": 0.92
}

Under the hood

Model type
Nyckel-trained

Trained on a Nyckel-curated dataset covering 2 cat gender categories, served on Nyckel's own infrastructure — your image stays on Nyckel.

Input
Image

Send an image URL or file to the invoke endpoint; the response is a label with a confidence score.

Make it yours
Adaptable

Clone it, then correct predictions and add your own samples in the console — Nyckel retrains automatically, turning this into a custom model tuned to your data.

More than a demo: this page is one of thousands of pretrained functions on Nyckel, an ML classification platform. You can invoke classifiers by API, review predictions, correct labels, collect samples from production traffic, and promote any pretrained function to a private custom model — without changing your integration.

Where teams use cat gender classification

Pet Adoption Platforms

Online pet adoption platforms can integrate the 'cat gender' identifier to automatically identify the gender of cats in their images. This will streamline the process for potential adopters to filter and find cats based on gender preferences, enhancing user experience and efficiency.

Veterinary Clinics

Veterinary clinics can use the 'cat gender' identifier during the intake process. By automatically classifying the gender of incoming cats based on images, clinics can ensure accurate records and provide tailored care based on gender-specific health considerations.

E-Commerce for Pet Products

E-commerce sites specializing in pet products can employ this function to categorize products designed for male or female cats. This helps customers easily navigate and find suitable items, promoting a better shopping experience and potentially increasing sales.

Animal Rescue Organizations

Animal rescue organizations can utilize the 'cat gender' identifier to quickly categorize and manage their rescues. This allows for more efficient record-keeping and helps in implementing targeted spaying/neutering programs based on gender statistics.

Pet Training Services

Training services can incorporate the 'cat gender' identifier to customize training plans for male and female cats. Recognizing gender differences can help trainers to develop more effective strategies, enhancing the overall training experience for pet owners.

Social Media for Pet Owners

Pet-focused social media platforms can use this function to help users share and find content related to specific genders of cats. By tagging images accurately, users can engage in discussions and share tips unique to male or female cats, fostering a more connected community.

Pet Insurance Companies

Pet insurance companies can leverage the 'cat gender' identifier to analyze gender-specific health risks when underwriting policies. Understanding the gender distribution in health claims can allow insurers to create tailored products and better predict costs associated with male and female cats.

Common questions

What's the difference between a zero-shot and a Nyckel-trained classifier?

A zero-shot classifier uses a large foundation model's general knowledge to pick between your labels — no task-specific training, so new or edited labels work immediately. A Nyckel-trained classifier has been trained on labeled examples and runs on Nyckel's own infrastructure, which typically makes it faster, cheaper per call, and more accurate on data that resembles its training set. The "Under the hood" section on this page shows which kind this classifier is, and any classifier can be adapted into a trained one by adding your own examples.

How do I know whether this will work for my application?

Honestly: we can't know in advance — it depends on your data stream and how closely it resembles what this classifier has seen. The reliable way to find out is to measure it on your own data: start invoking the classifier with real traffic, or upload and annotate a set of images in the console — make sure they look like your production data, not idealized examples. Nyckel's evaluation metrics then show you exactly how it performs on that data before you rely on it.

What happens when it makes a mistake?

No classifier is perfect, so Nyckel is built around the correction loop: invokes can be captured for review, you confirm or correct predictions in the console, and corrections become training data. Over time the model adapts to your data distribution — accuracy on your traffic improves with use rather than staying fixed.

Do I need training data to get started?

No. This cat gender classifier works out of the box — clone it into your console and you'll have your own API endpoint in under a minute. Training data only enters the picture when you want to adapt it: your corrected predictions and uploaded samples improve the model, and you can also edit the label set to match your needs.

What does it cost to try?

Trying the classifier on this page is free with no signup. Cloning it requires a free account, and the free tier covers your first API calls each month — see nyckel.com/pricing for current limits and paid tiers.

Ready to classify cat gender at scale?

Add this pretrained classifier to your Nyckel console — you'll get a live API endpoint in under a minute, and a path to a custom model when you need one.