Anthropic and OpenAI release dueling AI models on the same day in an escalating rivalry

OpenAI and Anthropic release new AI models on the same day amid an escalating rivalry.

Reuters

• OpenAI and Anthropic release new AI models on the same day amid an escalating rivalry.
• Anthropic released Claude Opus 4.6, and OpenAI unveiled GPT-5.3-Codex.
• Anthropic released commercials that mock OpenAI's plan to bring ads to ChatGPT.

The rivalry between OpenAI and Anthropic intensified this week.

The two companies released dueling new AI models on Thursday...