OpenAI and Anthropic escalated their AI rivalry by launching new models on the same day. Anthropic unveiled Claude Opus 4.6, focused on long, complex tasks, while OpenAI released GPT-5.3-Codex for faster, efficient AI-powered coding and productivity.
The rivalry between OpenAI and Anthropic sharpened this week after both companies released new artificial intelligence models on the same day, highlighting growing competition in advanced AI development.