Release tracker / StepFun
StepFun model releases
Every StepFun model launch we have recorded, newest first: Step. Each one links to its source, and to how it ranks on our benchmarks where we have tested it.
- Latest
- Step 5 Preview, 18 Sep 2026
- Launches
- 3
- Since
- 2 Feb 2026
- Since last launch
- 24 days
StepFun's latest model
-
Step 5 Preview
Step 5 Preview came out 24 days ago. Spotted a launch we're missing? Tell us.
How often StepFun ships
Lines with at least three launches in the last two years. Amber: longer since the last launch than the line's average gap. Grey: no launch for 90 days or more, marked quiet.
| Line | Size | Launches | Average gap | Latest | Last launch |
|---|---|---|---|---|---|
| Step | Large | 3 | 114 days | Step 5 Preview18 Sep 2026 | 24 days ago |
Every StepFun release
-
Step 5 Preview
-
Step 3.7 Flash
-
$0.10 in · $0.30 out per MEpoch AI source
Questions
- What is StepFun's latest model?
- Step 5 Preview, released 18 Sep 2026 (24 days ago). It is the newest of the 3 StepFun launches we have recorded since 2 Feb 2026.
- When will StepFun release its next model?
- StepFun has not announced its next model. It usually releases a new Step model about every 114 days; the last was Step 5 Preview, 24 days ago.
- How often does StepFun release new models?
- Over the last two years: a new Step model about every 114 days (3 launches).
Other providers: OpenAI, Mistral AI, Alibaba, Anthropic, Google, DeepSeek, xAI, Meta, Z.ai, Moonshot AI, Microsoft, MiniMax, Xiaomi, Amazon, NVIDIA. Or see every launch on one timeline.
A launch is the first day a model was publicly available, previews included; a family's sizes released together count once, and later dated updates of a model are left out. Main lines are checked by hand against the provider's own changelog or announcement where we could read it ("Provider"), otherwise a reference page ("Reference"); the rest come from Epoch AI's model data (CC BY 4.0).