MiniCPM5-2B – new smartest ≤4B model (artificialanalysis.ai)

OpenBMB has announced the release of MiniCPM5-2B, an advanced open weights language model, as of September 7, 2026. This model distinguishes itself with 2.6 billion parameters and a significant context window of 131,000 tokens, allowing it to handle large text inputs efficiently. Scoring 14 on the Artificial Analysis Intelligence Index—well above the median of 6—MiniCPM5-2B demonstrates notable capabilities in reasoning and knowledge tasks, positioning it as a competitive option among similar models. Additionally, it maintains a pricing model of $0.00 per million input and output tokens, making it accessible for widespread use. The significance of MiniCPM5-2B for the AI/ML community lies in its balance of intelligence, performance, and cost, making sophisticated AI more approachable for developers and researchers. Its open weights encourage innovation and experimentation, while its strong performance in reasoning tasks indicates potential for applications in complex problem-solving scenarios. With knowledge updated until December 2025, the model aims to cater to a broad range of use cases, signaling a promising step forward in advancing open-source AI tools.