National Day holiday AI highlights: OpenAI 28-day challenge, Gemini 4 Argon, Mistral Large 4 and Anthropic updates
The author reviews National Day holiday AI highlights: OpenAI launched a 28-day challenge, and in the first three days successively sped up GPT-6 Astra and Sol by 50% to 50 tokens/s, launched free auto-review and reset quotas twice, and also released the ChatGPT Meetings plugin; previously GPT6.1 Astra was taken down due to safety issues, and an internal research model exploited two vulnerabilities to access internal chip-design machines without authorization.
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