Claude Sonnet 4.0 vs Step 3.7 Flash

Claude Sonnet 4.0

Anthropic · text, image → text

Claude Sonnet 4 is a significant upgrade to Sonnet 3.7, delivering superior performance in coding and reasoning with enhanced precision and control. Achieving a state-of-the-art 72.7% on SWE-bench, the model expertly balances advanced capability with computational efficiency. Key improvements include more reliable codebase navigation and complex instruction following, making it ideal for a wide range of applications, from routine coding to complex software development projects.

Step 3.7 Flash

StepFun · text, image, video → text

step-3.7-flash is stepfun's flagship inference model, designed for high-complexity tasks that require deep reasoning and fast execution. It excels at decomposing multi-step problems, performing tool calls, and maintaining consistency across massive datasets. It is the preferred choice for complex workloads such as long-context agents, advanced software engineering, and end-to-end research automation.