StepFun: Step 3.5 Flash
stepfun/step-3.5-flash
Step 3.5 Flash (StepFun) is a low-cost open-weight model priced near the bottom of the board, at $0.1/$0.3 per million input/output tokens, served by 4 independent hosts. For the money it delivers #105 of 235 on the TryAii Score. Its best showing is #41 on Tau2-bench. It's among the fastest models we track, at roughly 76-92 tokens/sec.
Prompt $/1M
$0.100
Completion $/1M
$0.300
Context
262,144 tok
Best provider
102 tok/s · Parasail
Specs
- Model id
- stepfun/step-3.5-flash
- Display name
- StepFun: Step 3.5 Flash
- Modality
- text->text
- Tokenizer
- Other
- Instruct type
- —
- Context length
- 262,144
- Max completion
- 65,536
- Prompt $/1M
- $0.100
- Completion $/1M
- $0.300
- Free tier
- no
Capabilities
- Function callingno
- JSON modeno
- System promptno
- Visionno
- Moderatedno
Benchmark scores
Each axis is one benchmark, normalized to the best model in the field.
No benchmark data for this model.
Speed by provider
| Provider | tok/s |
|---|---|
| Parasail | 102 |
| StepFunfastest | 92 |
| SiliconFlowfastest | 76 |
| Ambient | 76 |
| DeepInfrafastest | 56 |
| stepfunfastest | — |
| Artificial Analysis | 0 |