Step 3.5 Flash
StepFun
Release Date
2026-02-02
Parameters
—
Context Length
262K
Modalities
text
Capability Radar
34
general
33
coding
83
reasoning
55
scienceest.
0
agents
0
multimodal
Science uses a reasoning proxy when dedicated science benchmarks are unavailable.
Rankings
| Domain | #Rank | Score | Source |
|---|---|---|---|
| Code Ranking | 141 | 52.0 | AA |
| General Ranking | 78 | 73.0 | AA |
| Science | 77 | 66.0 | AA |
Benchmark Scores (LLM Stats)
No benchmark data available
AA Evaluation Indices
Intelligence Index37.8
Coding Index31.6
Tau20.9
Gpqa0.8
Ifbench0.6
Lcr0.4
Scicode0.4
Terminalbench Hard0.3
Hle0.2
LLM Stats Category Scores
No category score data available
Pricing
Input Price$0.1 / 1M tokens
Output Price$0.3 / 1M tokens
Blended Price (3:1)$0.15 / 1M tokens
Speed
Tokens/sec181.4 tokens/s
Time to First Token0.78s
Time to Answer11.81s
Available Providers
(LS internal units)No provider data available
External Sources
No external links available