Opus 4.5 closed AnthropicAn AI safety company — creators of the Claude family of language models.'s 2025 with the highest public coding benchmarkA standardized test suite for comparing systems — ImageNet, MLPerf, and SPEC define industry scoreboards. scores and automatic context summarization for long chats. Claude for Excel and ChromeGoogle's web browser — built on Chromium and the most widely used browser worldwide. expanded beyond terminals — positioning AnthropicAn AI safety company — creators of the Claude family of language models. for knowledge-work agents competing with GPTGenerative Pre-trained Transformer — OpenAI's family of large language models from GPT-1 through GPT-5.-5.1 and GeminiGoogle's family of multimodal AI models — successors to PaLM and competitors to GPT and Claude. 3.

Opus 4.5 set the year's top public coding benchmarkA standardized test suite for comparing systems — ImageNet, MLPerf, and SPEC define industry scoreboards. for frontier models.

Spreadsheet and browser integrations pushed Claude into everyday office workflows.