Private AI
Step 3.7 Flash Thinking is StepFun's high-efficiency multimodal MoE model with visible reasoning enabled for deeper agentic coding, long-context reasoning, tool use, and native image/video understanding. ⚠️ Note: This model routes through StepFun, so privacy and logging guarantees may be limited.
Added May 29, 2026
Model weightsContext Window
262.1K
Max Output
256.0K
Avg output tokens (7d)
5.0K tokens
Input Price (Auto)
$0.20/1M
Output Price (Auto)
$1.15/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
29.7
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Coding Index
37.1
GPQA Diamond
Graduate-level scientific reasoning
80.9%
Better than 76% of models compared
HLE
Humanity's Last Exam
19.9%
Better than 82% of models compared
IFBench
Instruction-following benchmark
67.3%
Better than 79% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
98.5%
Better than 99% of models compared
AA-LCR
Long context reasoning evaluation
63.7%
Better than 79% of models compared
SciCode
Python programming for scientific computing
40.0%
Better than 76% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
35.6%
Last updated Jun 18, 2026
Artificial AnalysisBetter than 83% of models compared
