add claude 4.5 opus (#1358)

# why

adds support for using claude 4.5 opus with cua 

# what changed

added opus to model maps 

# test plan






<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Adds support for Anthropic Claude 4.5 Opus in CUA. Registers
anthropic/claude-opus-4-5-20251101 and maps it to the Anthropic
provider.

<sup>Written for commit 2e54c27.
Summary will update automatically on new commits.</sup>

<!-- End of auto-generated description by cubic. -->

Author: tkattkat

.changeset/wide-doors-allow.md

@@ -0,0 +1,5 @@
+---
+"@browserbasehq/stagehand": patch
+---
+
+Add support for 4.5 opus in cua agent

packages/core/lib/v3/agent/AgentProvider.ts

@@ -19,6 +19,7 @@ export const modelToAgentProviderMap: Record<string, AgentProviderType> = {
   "claude-3-7-sonnet-latest": "anthropic",
   "claude-sonnet-4-20250514": "anthropic",
   "claude-sonnet-4-5-20250929": "anthropic",
+  "claude-opus-4-5-20251101": "anthropic",
   "claude-haiku-4-5-20251001": "anthropic",
   "gemini-2.5-computer-use-preview-10-2025": "google",
   "fara-7b": "microsoft",

packages/core/lib/v3/types/public/agent.ts

@@ -238,6 +238,7 @@ export const AVAILABLE_CUA_MODELS = [
   "openai/computer-use-preview",
   "openai/computer-use-preview-2025-03-11",
   "anthropic/claude-3-7-sonnet-latest",
+  "anthropic/claude-opus-4-5-20251101",
   "anthropic/claude-haiku-4-5-20251001",
   "anthropic/claude-sonnet-4-20250514",
   "anthropic/claude-sonnet-4-5-20250929",

packages/core/tests/public-api/llm-and-agents.test.ts

@@ -25,6 +25,7 @@ describe("LLM and Agents public API types", () => {
       "openai/computer-use-preview",
       "openai/computer-use-preview-2025-03-11",
       "anthropic/claude-3-7-sonnet-latest",
+      "anthropic/claude-opus-4-5-20251101",
       "anthropic/claude-haiku-4-5-20251001",
       "anthropic/claude-sonnet-4-20250514",
       "anthropic/claude-sonnet-4-5-20250929",