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Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
Input
$0.10
per 1M tokens
Output
$0.30
per 1M tokens
Blended
$0.15
per 1M tokens
Cheaper than 75% of models. Median price is $0.56/1M tokens.
Daily
$0.15
Monthly
$4.50
174
tokens/sec
Faster than 86% of models
0.87
seconds
Faster than 61% of models
12.40
seconds
Faster than 36% of models
Market Median
86 tok/s
102% faster
Median TTFT
1.07s
18% faster
Throughput/Dollar
1157
tok/s per $/1M
Speed Comparison
Context Window
262K
tokens
Larger than 66% of models
Max Output
66K
tokens
25% of context
Quality Index
38.5
88th of 507
Top 17%
Coding Index
34.6
87th of 417
Top 21%
Price/1M
$0.15
145th cheapest
73% below median
Top 25%
Speed
174 tok/s
Top 14%
TTFT
0.87s
Context Window
262K
91st largest
Top 34%