DeepSeek released a multimodal model V4.1-Flash with 552 billion parameters. According to The Decoder, it uses four times less memory for the KV cache than its predecessor, and each token activates 16 billion parameters.

According to The Decoder's synopsis, V4.1-Flash slightly surpassed Opus 5 and GPT-5.6 Sol on the DeepSWE programming benchmark. The model is distributed under the MIT license and targets cheaper AI agents.

A practical takeaway is potentially lower memory requirements for agent systems with long context. However, the package contains only the metadata synopsis from a single independent publication, not the full text or primary confirmation, so results and economic impact require further verification.