Step-1

Training compute

6.2×10²³ FLOP

Parameters

130B

Published

Feb 18, 2025

Step-1 is an AI model developed by StepFun (China), first published in February 2025. It works in the language domain, on tasks such as language modeling/generation and question answering.

Training it took an estimated 6.2×10²³ FLOP of compute (estimation method: operation counting). The model has 130,000,000,000 parameters. It was trained on roughly 800B datapoints.

Access: Unreleased. Its weights are not openly released. Epoch AI rates the confidence of this record as confident.

Full record

Organization: StepFun
Country of organization: China
Domain: Language
Task: Language modeling/generation, Question answering
Training compute: 6.2×10²³ FLOP
Compute estimation method: Operation counting
Parameters: 130,000,000,000
Dataset size: 800B
Model accessibility: Unreleased
Open weights: No
Epoch confidence: Confident