Build a Dataset

To train a custom model, you will need to collect a dataset of training examples. Each example consists of a prompt, which is a valid input text, and a completion, which is a correct output for that specific prompt.

🔢 How many examples do I need?

At least 50 training examples are required to train a custom model. If you upload a file that contains fewer than 50 examples, you will encounter an error. More is better, so provide as many examples as you can.

🧩 It's all about quantity?

No! Data quality and diversity matter as well, so it’s a good idea to go over your examples manually and make sure they accurately capture various aspects of your task. It's critical that your examples reflect the real-world distribution of your problem.

File Formats

The dataset must be submitted in a single .csv or .jsonl file. We recommend using a .jsonl file due to better handling of line breaks.

If you are submitting a .csv file, it should have two columns labeled "prompt" and "completion". Each row should contain a single training example, with no empty rows in between.

If you are submitting a .jsonl file, each line in the file should be a JSON dictionary with two fields: "prompt" and "completion".

Below is a simple example for both .csv and .jsonl formats:

"Where was the steam engine invented?",England
"In what year did the US gain its independence?",1776
"Who was the longest reigning roman emperor?",Augustus
{"prompt": "Where was the steam engine invented?\n", "completion": "England"}
{"prompt": "In what year did the US gain its independence?\n", "completion": "1776"}
{"prompt": "Who was the longest reigning roman emperor?\n", "completion": "Augustus"}

🛑 Common Errors


Uploading a file with fewer than two columns or with inconsistent columns in different lines will result in an error.

You may upload files with different column names - in which case, you will be prompted to identify the desired prompt column and the desired completion column.


Completions cannot be empty.

However, prompts can be empty.