Claude Opus 5.2 may be undergoing limited testing in Claude Code. Here is what the leaks claim, what remains unverified, and how CometAPI access would work after release.
claude-fable-5-1 為長時間執行的智能體提供下一代智能
Access to Claude Fable 5 has been restored. It brings 5th-generation intelligence to your most ambitious coding and professional work.
Claude Opus 4.8 is a premium AI model designed for advanced reasoning, deep analysis, and high-quality content generation. It excels at handling complex instructions, long-context understanding, and sophisticated problem-solving across professional and technical domains.
Claude Sonnet 5 API is live on CometAPI at $1.6 per million input tokens and $8 per million output tokens, 20 percent below Anthropic list price. One key gives you Claude Sonnet 5 plus 500+ models from OpenAI, Google, and ByteDance under all in one pricing and a single invoice. No seat fees. No monthly minimum. Pay only for what you use. Start free and make your first call in under five minutes.
Claude Sonnet 4.6 is our most capable Sonnet model yet. It’s a full upgrade of the model’s skills across coding, computer use, long-context reasoning, agent planning, knowledge work, and design. Sonnet 4.6 also features a 1M token context window in beta.
Anthropic's most capable, widely released model, for the most demanding reasoning and long-horizon agentic work
Claude Opus 5 is available today. It’s a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price.
Claude Opus 4.7 is a hybrid reasoning model designed specifically for frontier-level coding, AI agents, and complex multi-step professional work. Unlike lighter models (e.g., Sonnet or Haiku variants), Opus 4.7 prioritizes depth, consistency, and autonomy on the hardest tasks.
Claude Mythos Preview is our most capable frontier model to date, and shows a striking leap in scores on many evaluation benchmarks compared to our previous frontier model, Claude Opus 4.6.
Claude Opus 4.6 is Anthropic’s “Opus”-class large language model, released February 2026. It is positioned as a workhorse for knowledge-work and research workflows — improving long-context reasoning, multi-step planning, tool use (including agentic software workflows), and computer-use tasks such as automated slide and spreadsheet generation.
最快、最具成本效益的模型。
Claude Opus 4.5 是 Anthropic 推出的經指令微調大型語言模型，旨在處理複雜推理、程式設計與多輪對話。 它支援長上下文處理、工具/函式呼叫、結構化輸出，以及與檢索增強工作流程的整合。 典型用例包括分析型助理、程式碼生成與審查、知識庫問答，以及內容撰寫並產出符合政策的回應。 技術亮點包括指令遵循、對 RAG 友善的行為，以及在 Claude 部署中可用的安全控制。
Claude Sonnet 4.5 在電腦應用能力方面取得重大躍進。在 OSWorld 這個用於測試 AI 模型處理真實世界電腦任務的基準平台上，Sonnet 4.5 以 61.4% 躍居榜首，而僅四個月前，Sonnet 4 以 42.2% 領先。我們的 Claude for Chrome 擴充功能將這些升級功能付諸實踐。
Claude Opus 4.1 是 Anthropic 旗艦模型的更新版本，在程式設計、推理與代理任務方面提供了更佳的表現。它在 SWE-bench Verified 上取得 74.5% 的成績，並在跨多檔案的程式碼重構、除錯準確性以及注重細節的推理方面有顯著提升。此模型支援最長達 64K tokens 的擴展推理，並針對涉及研究、資料分析與工具輔助推理的任務進行了最佳化。
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