JavaGuide

Sep 21, 2026 · Artificial Intelligence

Step 5 Preview Outperforms DeepSeek V4 Pro in Coding Tasks at Fraction of Opus 5 Cost

The article benchmarks StepFun's Step 5 Preview against DeepSeek V4 Pro across three coding challenges—2D animation, token bucket demo, and CSV analysis workbench—revealing Step 5 Preview delivers richer details and better test coverage despite longer generation times, with per-task cost at just 35% of GLM-5.3 and 12.5% of Claude Opus 5.