Starting April 29, 2025, Gemini 1.5 Pro and Gemini 1.5 Flash models are not available in projects that have no prior usage of these models, including new projects. For details, seeModel versions and lifecycle.
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Anthropic's most powerful model yet and the state-of-the-art coding model.
Claude Opus 4.1 delivers sustained performance on long-running tasks that
require focused effort and thousands of steps, significantly expanding what AI
agents can solve.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[],[],null,["# Claude Opus 4.1\n\nAnthropic's most powerful model yet and the state-of-the-art coding model.\nClaude Opus 4.1 delivers sustained performance on long-running tasks that\nrequire focused effort and thousands of steps, significantly expanding what AI\nagents can solve.\n\n\n[Try in Vertex AI](https://console.cloud.google.com/vertex-ai/publishers/anthropic/model-garden/claude-opus-4-1)\n\n\n[View model card in Model Garden](https://console.cloud.google.com/vertex-ai/publishers/anthropic/model-garden/claude-opus-4-1)"]]