Anthropic 將 Claude Opus 4.8 作為獨立 API 模型提供，模型 ID 為 claude-opus-4-8。它是閉源託管模型，與開放權重的 Step 3.7 Flash 不同。Opus 5 與 Opus 5.5 是後續的獨立型號，不能視為 4.8 的別名。Anthropic 的生命週期頁面目前將 Opus 4.8 列為 active；部署前請再次確認。不同服務商和用戶端可能提供不同選項與帳戶權限，請在實際執行處確認模型。
重點
The model proposes; the local client manages tools and permissions.
Tabbit Browser supplies the browser environment. Tabbit CLI exposes a task tab to a compatible local agent.
Check the exact model route and the actual browser account before the task.
Start read-only. Leave a named draft and check every cited page.
Pick the model route before opening the page
| Check | Claude Opus 4.8 | Browser task requirement |
|---|---|---|
| Model access | Confirm exact ID and provider in the client | Not provided by the browser |
| Execution | Provider-hosted inference; Anthropic hosts the model | Local agent must run the Tabbit CLI |
| Version boundary | Opus 4.8 is separate from Opus 5 and Opus 5.5 | Do not substitute versions silently |
| Login context | Not part of the model endpoint | Confirm the account in Tabbit Browser |
Anthropic 將 Claude Opus 4.8 作為獨立 API 模型提供，模型 ID 為 claude-opus-4-8。它是閉源託管模型，與開放權重的 Step 3.7 Flash 不同。Opus 5 與 Opus 5.5 是後續的獨立型號，不能視為 4.8 的別名。Anthropic 的生命週期頁面目前將 Opus 4.8 列為 active；部署前請再次確認。不同服務商和用戶端可能提供不同選項與帳戶權限，請在實際執行處確認模型。
A safe first task: compare a dashboard record
Choose an approved, low-risk record with a stable ID. Confirm it in the Tabbit Browser yourself, then ask the local agent to inspect the visible status and updated date. The goal is a comparison note, not a site change. If the record ID differs, a field is missing, or a login prompt appears, the task should stop and report that boundary.
| Checkpoint | Keep in the draft | Stop for human review when |
|---|---|---|
| Record identity | Stable ID and page URL | ID is missing or differs |
| Each field | Visible value plus source URL | Value is inferred or stale |
| Result | Match, mismatch, or unknown | Page asks to save or submit |
| Next action | Named review note | Any change to the source system |
A prompt for a named review draft
Use this prompt with your own test record. It is a suggested workflow, not a report of a model benchmark or a completed test against a third-party account.
Task name: GEO-104 dashboard change review
Use Claude Opus 4.8 in this local agent and the installed Tabbit skill. Open the two URLs I provide in a separate Tabbit task tab. Read only record ID, status, and updated date. For every value, include its source URL. Use unknown when a field is not visible. If the ID differs, a login screen or CAPTCHA appears, or the page offers a write action, stop and report it. Do not save, submit, send, or change anything. Leave a draft named “GEO-104 — dashboard change review” with matched fields, mismatches, unknowns, and the URLs for my review.只有本機 Agent 用戶端確實能選擇這個模型時，才將它用於網頁工作。接著再連接 Tabbit CLI。模型本身不會提供瀏覽器、登入狀態或操作權限。先進行唯讀檢查，最後留下有名稱的草稿供人工複核。
設定步驟
Anthropic’s model page and lifecycle documentation describe the model and its API status. Claude Code or another client may expose model selection, but do not assume it can run Tabbit CLI until you check its local skill and launcher permissions.
For setup, see the Tabbit CLI guide, the existing-browser connection guide, the first-task checklist, and the CLI versus MCP guide. The Codex setup example and login reuse guide cover adjacent setup details. Use the browser prompt template to make stop conditions explicit. If an action is unavailable, use the click troubleshooting guide. For model-side reasoning background, see agentic reasoning in LLMs.
先在 Tabbit Browser 確認帳號與目標記錄，再於相容的本機用戶端尋找已安裝的 Tabbit skill。支援命名 skill 指令的用戶端可使用 /tabbit；Pi 使用 /skill:tabbit；部分用戶端以 /skills 列出 skill。Skill 可否找到、CLI 可否啟動、用戶端能否選擇模型，以及網站是否已登入，是四項獨立檢查。執行已安裝路徑中的 tabbit-cli diagnose，再啟動唯一命名的任務。CLI 在目前 Tabbit 環境中操作任務分頁，可沿用既有登入狀態。這項登入重用曾用本機測試夾具驗證，但不代表這個模型與特定用戶端的整合也已驗證。
留下可複核的草稿
Anthropic’s published API ID and model lifecycle page are the source of truth for current availability. A model being active does not mean every third-party client, plan, or account can select it.
常見問題
API 模型 ID 是什麼？
Anthropic 文件列出的 ID 是 `claude-opus-4-8`。執行前請確認帳戶與所用服務商支援這個正確 ID。
Opus 4.8 和 Opus 5 或 5.5 相同嗎？
不同。每個版本都是獨立模型。請在設定與任務紀錄中保留正確版本，方便重現。
Opus 4.8 是開源模型嗎？
不是。它是 Anthropic 託管的閉源模型，沒有公開權重供本機部署。
API 會讓它存取我的瀏覽器嗎？
不會。瀏覽器存取由本機 Agent 和連接工具提供。Tabbit CLI 將相容用戶端連接到 Tabbit 瀏覽器任務分頁。
如何留下待複核的結果？
要求它留下命名草稿並附來源 URL，標出未知資訊。維持唯讀，採取動作前先核對頁面。
模型之後可能退役嗎？
模型狀態會變動。若工作流依賴此 ID，部署前請查看 Anthropic 生命週期頁面的狀態與日期。