Claude Fable 5 Coding and Math Dataset (Non-Thinking)

This repository contains a dataset of 603 coding and math-related prompts and responses from Claude Fable 5.

The generation of this dataset cost approximately $75.

Please note that this dataset is non-thinking. Fable 5 only supported adaptive thinking, and it decided not to think for these prompts, meaning there is no chain-of-thought/reasoning content in this dataset.

Origin of Prompts

The prompts in this dataset originate from the code_train.jsonl split of: angrygiraffe/claude-opus-4.6-4.7-reasoning-8.7k

Responses Generation

The responses were generated by Claude Fable 5 on June 10, 2026, when it was first released.

Unfortunately, only this small subset was generated before the model's access was suspended. I decided to share it so everyone can have it.

Dataset Structure

Each line in code.fable-5.jsonl is a JSON object containing:

• category: The category of the task (e.g., coding, math).
• messages: A list of messages detailing the tutoring/coding setup, user prompt, and Claude Fable 5's response.
• model: The model used (claude-fable-5).