Step 3.5 Flash 2603
stepfun/step-3.5-flash-2603
StepFun flash model for efficient multimodal reasoning, coding, and tool use
Capabilities
ReasoningYes
Tool callingYes
Structured outputNo
TemperatureSupported
AttachmentNo
Open weightsYes
Limits
Context256,000 tokens
Max input256,000 tokens
Max output256,000 tokens
Details
FamilyN/A
Knowledge cutoff2025-01
Release date2026-04-02
Last updated2026-04-02
Modalities
Inputtext
Outputtext
Benchmarks
Artificial Analysis Coding Index
34.6
index
SciCode
38.5
percent correct
Terminal-Bench Hard
32.6
success rate
Community Rating
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Pricing
Cost per 1M tokens
InputN/A
OutputN/A