AI benchmark platform Epoch AI briefly featured a new model entry with the codename "Claude Kayak" on its page, with the release date marked as today, and was subsequently removed, sparking intense attention from the global AI community.

Industry experts generally believe that "Claude Kayak" refers to Anthropic's upcoming flagship model, Claude Opus4.5. As the strongest version of the Claude4 series, Opus4.5 is expected to achieve significant improvements in complex reasoning, multi-step agent tasks, and code generation capabilities, potentially breaking the 80% score mark in authoritative benchmarks like SWE-bench Verified, directly competing with OpenAI GPT-5.1 and Google Gemini3.0Pro.

Claude2, Anthropic, artificial intelligence, chatbot Claude

Following the release of Opus4.1 in August this year, Anthropic has successively launched Sonnet4.5 and Haiku4.5. If Opus4.5 is released as scheduled, it will complete the full update of the Claude4 series, further solidifying its leading position in multimodal and enterprise-level AI fields.

As of the time of writing, Anthropic has not responded officially, but the community has entered a "standby" state. Developers generally expect the new model to bring stronger agent coordination capabilities and longer context processing abilities, while also worrying that high computational power requirements may continue the Opus series' tradition of "limited supply." If officially confirmed today, Claude Opus4.5 will become one of the most significant events in the AI competition at the end of 2025.