StepStellar, a pioneering artificial intelligence company, has launched the next-generation foundation large model, Step 3, boasting an impressive parameter count of up to 321 billion. This model stands out with its robust intelligence, exceptional efficiency, open-source capabilities, and multimodality. On domestic chips, Step 3 delivers up to three times the inference efficiency of comparable products, while it offers a significant boost of over 70% in distributed inference throughput on NVIDIA Hopper architecture chips. Furthermore, StepStellar has forged partnerships with numerous chip and platform manufacturers to establish the 'Model-Chip Ecosystem Innovation Alliance,' fostering collaborative innovation across the entire industry chain.