MiniCPM5-2B puts a 2.5B open model above every 4B model in its comparison

OpenBMB shipped MiniCPM5-2B, a dense 2.5-billion-parameter model under Apache-2.0 with a 131,072-token context, posting a 53.9 average that beats every open 4B model it was tested against — and releasing the UltraData training sets behind it. If you run local or on-device AI, this changes the cost-capability tradeoff.