Step-1
Step-1 is worth evaluating for long context when its provider route and context window match the workload.
Use it for
- Teams evaluating long context
- Workloads that can use a 128k context window
- Buyers comparing 1 tracked provider route
Do not use it for
- Vision or document-understanding workloads
- Strict JSON or tool-calling flows
- Family
- Step
- Released
- 2024-04-01
- Context
- 128k
- Architecture
- Decoder Only
- Specialization
- general
- Openness
- Proprietary
- License
- ProprietaryCommercial use: conditional
- Weights
- Not released
- Code
- Unknown
- Training
- Pretrained
Cheapest of 1 route · StepFun
About
Step-1 is StepFun's Step model. It offers a 128K-token context window.
Step-1 is a proprietary model in the Step family. The structured metadata tracks a 128k-token context window. This page tracks provider routes through StepFun. No headline benchmark score is tracked for Step-1 yet.
Top use-case fit
Long context
Included by capability and metadata signals in the decision map.
Provider price ladder
Compare API pricing across 1 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| StepFun | - | - | ServerlessPartial |
Capabilities
No model capability flags are currently sourced.
Benchmark peer barsfor Long context
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
Frequently asked questions
What is the context window of Step-1?
Step-1 has a context window of 128k tokens.
When was Step-1 released?
Step-1 was released on 2024-04-01.
Which providers offer Step-1?
Step-1 is available from 1 provider: StepFun.
Cheapest of 1 route · StepFun