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Step 3.5 Flash
StepFun·Released 2026-02-02
Multimodal
Comparison data ready73% coverage12/12 fields directly observedUpdated Jul 14, 2026, 6:00 PM
Related Models
Pricing
Input
$0.10
per 1M tokens
Output
$0.30
per 1M tokens
Blended
$0.15
per 1M tokens
Cheaper than 76% of models. Median price is $0.67/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$0.15
Monthly
$4.50
vs. Similar Models
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OpenAI: o4 MiniQ:+0.1
$1.93+1183%
DeepSeek V3.2 Exp (Reasoning)Q:-0.1
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Performance
217
tokens/sec
Faster than 90% of models
0.74
seconds
Faster than 68% of models
9.94
seconds
Faster than 41% of models
Market Median
96 tok/s
125% faster
Median TTFT
1.11s
33% faster
Throughput/Dollar
1449
tok/s per $/1M
Speed Comparison
StepFun: Step 3.5 Flash
217 tok/s-0%
Google: Gemini 2.5 Flash Lite
218 tok/s+1%
Nova 2.0 Omni (Non-reasoning)
219 tok/s+1%
Benchmarks
MMLU-ProNot evaluated
GPQA Diamond
83.1%
HLE
19.1%
LiveCodeBenchNot evaluated
SciCode
40.4%
TerminalBench Hard
27.3%
MATH-500Not evaluated
AIMENot evaluated
AIME 2025Not evaluated
IFBench
64.6%
Long Context Recall
43.0%
Tau2
94.4%
Market AverageTop Score