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.

OpenAI and Anthropic release new AI models the same day as their rivalry intensifies

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OpenAI and Anthropic release new AI models the same day as their rivalry intensifies