
StepFun
Builds the Step family of large multimodal models.
- Models
- 7
- Founded
- 2023
- Based in
- Shanghai
- Website
- stepfun.com
StepFun models
| # | Model | Lab | ||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Step 5 Preview | StepFun | 1442 | — | — | $1 / $2.70 | 1M | 2026-10-08 |
| 2 | Step-3.5-Flash | StepFun | 1403 | −1 | — | $0.10 / $0.30 | 256K | 2026-01-29 |
| 3 | Step-3 | StepFun | 1350 | −0 | — | — | — | 2025-08-14 |
| 4 | Step-1o Turbo | StepFun | 1336 | — | — | — | — | 2026-10-20 |
| 5 | Step-2 16K Exp | StepFun | 1321 | — | — | — | — | 2026-10-20 |
| 6 | Step-1V 32K | StepFun | — | — | — | — | — | — |
| 7 | Step-1o Vision 32K | StepFun | — | — | — | — | — | — |
Gemini 4 Argon
Claude Opus 5.5
Muse Wonder
MiMo-V2.6-Pro
Qwen3.8-Max
Kimi K3
GLM-5.3
GPT-5.5
ERNIE 5.1
DeepSeek-V4.1-Flash-20260910
Grok 4.20 Beta
amazon-nova-experimental-chat
Dola Seed 2.0 Pro
NVIDIA-Nemotron-3-Ultra-550B-A55B
Gemma 4 31B