Step 3.7 Flash
MultimodalStep 3.7 Flash is an open-source multimodal reasoning model by StepFun with 198B total parameters (11B active) using Mixture of Experts. It accepts text and image inputs and features a 256K context window, selectable reasoning effort, tool calling, and agentic capabilities for coding and search workflows, scoring 80.9% on GPQA Diamond and 56.3% on SWE-bench Pro. It is served by deepinfra with a 256K-token context window at $0.2 / $1.15 per 1M input/output tokens.
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