Step3-321B-A38B
Step3-321B-A38B is an AI model published by StepFunAI, released on 2025-07-31, for Multimodal model, with 3210.0B parameters, and 64K tokens context length, requiring about 642GB storage, under the Apache 2.0 license.
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
Step3 currently shows benchmark results led by LiveCodeBench (54 / 118, score 67.10), SimpleVQA (1 / 2, score 62.20), AIME2025 (53 / 106, score 82.90). This page also consolidates core specs, context limits, and API pricing so you can evaluate the model from benchmark results and deployment constraints together.
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| Variant name | Version type | Quantization | Model size | HuggingFace link |
|---|---|---|---|---|
| Step3-FP8ℹ️ | Instruct | FP8 | 327.11 GB | Download link |
Step3-321B-A38B is an AI model published by StepFunAI, released on 2025-07-31, for Multimodal model, with 3210.0B parameters, and 64K tokens context length, requiring about 642GB storage, under the Apache 2.0 license.
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