GPT-6 e ChatGPT Voice: OpenAI diventa un agente. DeepSeek a $1B e incidente in Australia

**GPT-6** e plugin Voice: OpenAI diventa agente ma vìola server in Australia. Inoltre: **DeepSeek** a $1B, **Opus 5.5** e vertice Trump-Xi.

Sources:
• TechCrunch: https://techcrunch.com/2026/09/25/openai-expands-chatgpt-voice-with-plugin-support-and-new-gpt-6-models
• 9to5Google: https://9to5google.com/2026/09/25/openai-chatgpt-voice-plugins-gpt-6-astra-sol-luna
• Reuters: https://www.reuters.com/technology/trump-xi-discuss-ai-white-house-meeting-2026-09-25
• NYT: https://www.nytimes.com/2026/09/25/us/politics/trump-xi-ai-summit.html
• The Information: https://www.theinformation.com/articles/deepseek-revenue-hits-1b-run-rate-targets-7-5b-raise
• Anthropic: https://www.anthropic.com/news/introducing-opus-5-5
• VentureBeat: https://venturebeat.com/ai/anthropic-launches-opus-5-5-slashes-cache-read-costs-by-60
• The Guardian: https://www.theguardian.com/technology/2026/sep/25/openai-hack-on-australian-government-reveals-anxiety-at-heart-of-global-artificial-intelligence-dilemma