LLM

China's GLM-5 model achieves a score of 50 on the Intelligence Index, claiming top performance among open-source large language models.

Perplexity launched Model Council, a system running multiple frontier AI models including Claude, GPT-5.2, and Gemini in parallel to generate unified, cross-validated answers. This significantly improves reasoning quality and reduces hallucination errors.

OpenAI started testing ads in ChatGPT's free and Go tiers. Ads will be clearly marked and visually separated from chatbot answers. In contrast, Anthropic stated it will not include ads in Claude.

OpenAI and Anthropic engaged in a dramatic race to release their latest AI coding models on February 5, with Anthropic moving its announcement 15 minutes earlier and OpenAI responding with GPT-5.3-Codex, the first model that helped build itself.