Pretrained computer vision classifier

Identify lettuce species with one API call.

A pretrained lettuce species classifier that sorts an image into one of 10 categories — what species of lettuce it is. Use the lettuce species API immediately, no training required, then adapt it to your own data when you need more.

Pretrained · Nyckel-trained 10 labels out of the box Image input

Try the lettuce species classifier

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

What this lettuce species classifier recognizes

A sample of the 20 labels this pretrained classifier chooses between.

Arugula
Assorted Salad Mix
Baby Greens
Butterhead
Celtuce
Endive
Escaping Varieties
Escarole
Frisée
Green Leaf

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 lettuce species 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": "Arugula",
  "labelId": "label_...",
  "confidence": 0.92
}

Under the hood

Model type
Nyckel-trained

Trained on a Nyckel-curated dataset covering 10 lettuce species 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 lettuce species classification

Agricultural Monitoring

Farmers can use the lettuce species identifier to monitor crop health and identify which species are most susceptible to diseases. This can lead to improved decision-making and targeted interventions, enhancing overall crop yield.

Supply Chain Management

Distributors can implement the identifier to verify the species of lettuce during the sorting process. This ensures that products meet quality standards and prevents mislabeling, enhancing brand trust and customer satisfaction.

Research and Development

Agricultural researchers can utilize the functionality to analyze the genetic diversity of different lettuce species. This can aid in breeding programs aimed at developing disease-resistant or climate-adaptive varieties.

Market Analysis

Retailers can employ the species identifier to analyze sales data based on different lettuce types. This information can help in optimizing inventory and tailoring marketing strategies to consumer preferences.

Food Safety Compliance

Food safety inspectors can use the identifier to ensure that only approved species are sold in the marketplace. This helps in maintaining compliance with regulatory standards and enhancing consumer health safety.

Educational Tool

Educational institutions can implement the lettuce species identifier as a teaching tool in agricultural studies. Students can learn about plant classification and biology hands-on, fostering deeper understanding through practical application.

Biodiversity Conservation

Conservation organizations can use the identifier to assess biodiversity in regions where wild lettuce species grow. By identifying species and their distribution, these organizations can develop more effective conservation strategies.

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 lettuce species 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 lettuce species 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.