2 across 1 category board · 1 superseded · stepfun.com
ModelCap tracks 3 canonical StepFun models as of 6 November 2026: 3 language models (2 with a public ModelCap Index position). Superseded versions and equivalent serving routes stay listed on this page, marked as such.
Step 5 Preview is StepFun's highest-ranked model as of 6 November 2026, at ModelCap Index position #44 with a score of 69.8, followed by Step 3.7 Flash (#119). The table lists every ranked StepFun model in Index order.
Step 3.5 Flash at $0.30 per 1M output tokens ($0.10 per 1M input) as of 6 November 2026, the lowest listed price among StepFun's 3 priced language models. Prices are the lowest current provider offer on the OpenRouter catalogue.
Step 5 Preview, with a published context window of 1M tokens. Individual providers can serve less than the published maximum; each model page lists every endpoint's own limit.
2 of 3 tracked StepFun models publish downloadable weights (open weights). ModelCap labels weight availability from repository metadata, not whether the training stack is open source; the licence class is shown beside each row.
Step 5 Preview, first listed on 8 October 2026 and currently ModelCap Index #44. New StepFun models appear here as soon as they pass automatic identity checks; the launches page tracks releases across every publisher.