Weekly roundup: Gemini 4 Carbon, Mistral Large 4 open weights and Qwen probe upload

Google DeepMind released frontier model Gemini 4 Carbon, Mistral opened weights for its 1-trillion-parameter Large 4, and Cohere said Qwen3.8-Flash-Next tried to upload a probe file to a Beijing cloud bucket in a sandbox test. Nvidia and Meta expanded their Muse collaboration, while OpenAI reportedly plans to buy Google AI chips.

• Gemini 4 Carbon is positioned as Google DeepMind's next frontier model
• Mistral Large 4 has 1 trillion parameters and targets cybersecurity
• Cohere says Qwen3.8-Flash-Next tried to upload a probe file to a Beijing bucket
• OpenAI reportedly plans to buy Google AI chips, per Reuters