StepFun: Step 3.7 Flash
Released May 28, 2026Try it on:
Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...
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Pricing
Per token
- Input (per 1M)
- $0.200
- Output (per 1M)
- $1.15
- Cache Read (per 1M)
- $0.040
Capabilities
Modality
text+image+video->textContext
256K tokens
Tokenizer
Other
Max output
256K tokens
Moderation
Unmoderated
Supported parameters
frequency_penalty
include_reasoning
logprobs
max_tokens
reasoning
response_format
stop
structured_outputs
temperature
tools
top_logprobs
top_p
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