TPSTokens Per Second

Step-3.5-Flash

StepFun🇨🇳 China
active

196B total / 11B active open-source MoE under Apache 2.0 with 256K context and high efficiency.

Compare with other models →
Context window262K tokens
Input / 1M tokens$0.1
Output / 1M tokens$0.3

Version History

step-3-5-flash-launchmajor

Step-3.5-Flash launches.

Benchmark Scores

Full leaderboard →
97.3%
AIME 2025
1395.0 elo
Arena Elo
82.6%
GPQA
85.2%
Hallucination Rate
294.0 tokens_per_sec
Speed (tok/s)
74.4%
SWE-bench Verified