Step-3.5-Flash
Overview
Overview
Step-3.5-Flash is StepFun's fast, cost-effective multimodal model optimized for quick inference. Built on their Step3 architecture, it offers strong performance across text and vision tasks with low latency and efficient token usage, ideal for production workloads requiring speed and cost efficiency.
Step-3.5-Flash was released on February 2, 2026. API access is available through StepFun.
Performance
Timeline
ReleasedUnknown
Knowledge CutoffUnknown
Specifications
Parameters
196.0B
License
Apache 2.0
Training Data
Unknown
Benchmarks
Benchmarks
Step-3.5-Flash Performance Across Datasets
Scores sourced from the model's scorecard, paper, or official blog posts
llm-stats.com - Thu Feb 05 2026Notice missing or incorrect data?Start an Issue discussion→
Pricing
Pricing
Pricing, performance, and capabilities for Step-3.5-Flash across different providers:
| Provider | Input ($/M) | Output ($/M) | Max Input | Max Output | Latency (s) | Throughput | Quantization | Input | Output |
|---|---|---|---|---|---|---|---|---|---|
StepFun | $0.10 | $0.40 | 65.5K | 8.2K | 0.3 | 150.0 c/s | — | Text Image Audio Video | Text Image Audio Video |
API Access
API Access Coming Soon
API access for Step-3.5-Flash will be available soon through our gateway.
Recent Posts
Recent Reviews
FAQ
Common questions about Step-3.5-Flash
Step-3.5-Flash was released on February 2, 2026 by StepFun.
Step-3.5-Flash was created by StepFun.
Step-3.5-Flash has 196.0 billion parameters.
Step-3.5-Flash is released under the Apache 2.0 license. This is an open-source/open-weight license.
Yes, Step-3.5-Flash is a multimodal model that can process both text and images as input.