feat: Opus 4.1 support, switch default open-swe-max to Opus 4.1 (#678)

README.md

@@ -35,7 +35,7 @@ Open SWE is an open-source cloud-based asynchronous coding agent built with [Lan
 Open SWE can be used in multiple ways:
 
 - 🖥️ **From the UI**. You can create, manage and execute Open SWE tasks from the [web application](https://swe.langchain.com). See the ['From the UI' page](https://docs.langchain.com/labs/swe/usage/ui) in the docs for more information.
-- 📝 **From GitHub**. You can start Open SWE tasks directly from GitHub issues simply by adding a label `open-swe`, or `open-swe-auto` (adding `-auto` will cause Open SWE to automatically accept the plan, requiring no intervention from you). For enhanced performance on complex tasks, use `open-swe-max` or `open-swe-max-auto` labels which utilize Claude Opus 4 for both planning and programming. See the ['From GitHub' page](https://docs.langchain.com/labs/swe/usage/github) in the docs for more information.
+- 📝 **From GitHub**. You can start Open SWE tasks directly from GitHub issues simply by adding a label `open-swe`, or `open-swe-auto` (adding `-auto` will cause Open SWE to automatically accept the plan, requiring no intervention from you). For enhanced performance on complex tasks, use `open-swe-max` or `open-swe-max-auto` labels which utilize Claude Opus 4.1 for both planning and programming. See the ['From GitHub' page](https://docs.langchain.com/labs/swe/usage/github) in the docs for more information.
 
 # Documentation
 

apps/docs/faq.md

@@ -7,7 +7,7 @@ description: "Frequently Asked Questions"
   The cost per run varies greatly based on the complexity of the task, the size of the repository, and the number of files that need to be changed.
 
   For most tasks, you can expect to pay between `$0.50` -> `$3.00` when using Claude Sonnet 4.
-  For the same tasks running on Claude Opus 4, you can expect to pay between `$1.50` -> `$9.00`.
+  For the same tasks running on Claude Opus 4/4.1, you can expect to pay between `$1.50` -> `$9.00`.
 
   Always remember to monitor your runs if you're cost conscious. The most expensive run I've seen Open SWE complete was ~50M Opus 4 tokens, costing `$25.00`.
 </Accordion>

apps/docs/usage/best-practices.mdx

@@ -40,7 +40,7 @@ Submit separate requests for different features or fixes. This allows Open SWE t
 ## Model Selection
 
 - **Claude Sonnet 4 (Default)**: The default model for planning, writing code, and reviewing changes. This model offers the best balance of performance, speed and cost.
-- **Claude Opus 4**: A larger, more powerful model for difficult, or open-ended tasks. Opus 4 is more expensive and slower, but will provide better results for complex tasks.
+- **Claude Opus 4.1**: A larger, more powerful model for difficult, or open-ended tasks. Opus 4.1 is more expensive and slower, but will provide better results for complex tasks.
 
 ### Avoid Other Models
 
@@ -74,8 +74,8 @@ If you're running Open SWE against an open-ended or very complex task, you may w
 
 - `open-swe`: Manual mode with Sonnet 4
 - `open-swe-auto`: Auto mode with Sonnet 4
-- `open-swe-max`: Manual mode with Opus 4
-- `open-swe-max-auto`: Auto mode with Opus 4
+- `open-swe-max`: Manual mode with Opus 4.1
+- `open-swe-max-auto`: Auto mode with Opus 4.1
 
 <Note>
   In development environments, append `-dev` to all labels (e.g.,

apps/docs/usage/github.mdx

@@ -33,7 +33,7 @@ Open SWE supports three types of labels that control how the agent operates:
 
 **Max Mode (`open-swe-max` and `open-swe-max-auto`)**
 
-- Uses Claude Opus 4 for both planning and programming tasks
+- Uses Claude Opus 4.1 for both planning and programming tasks
 - Provides enhanced performance and reasoning capabilities for complex problems
 - `open-swe-max`: Requires manual plan approval with premium model performance
 - `open-swe-max-auto`: Combines automatic execution with premium model capabilities

apps/open-swe/src/graphs/manager/nodes/classify-message/prompts.ts

@@ -73,8 +73,8 @@ Your documentation is available at: https://docs.langchain.com/labs/swe
 You can be invoked by both the web app, or by adding a label to a GitHub issue. These label options are:
 - \`open-swe\` - trigger a standard Open SWE task. It will interrupt after generating a plan, and the user must approve it before it can continue. Uses Claude Sonnet 4 for all LLM requests.
 - \`open-swe-auto\` - trigger an 'auto' Open SWE task. It will not interrupt after generating a plan, and instead it will auto-approve the plan, and continue to the programming step without user approval. Uses Claude Sonnet 4 for all LLM requests.
-- \`open-swe-max\` - this label acts the same as \`open-swe\`, except it uses a larger, more powerful model for the planning and programming steps: Claude Opus 4. It still uses Claude Sonnet 4 for the reviewer step.
-- \`open-swe-max-auto\` - this label acts the same as \`open-swe-auto\`, except it uses a larger, more powerful model for the planning and programming steps: Claude Opus 4. It still uses Claude Sonnet 4 for the reviewer step.
+- \`open-swe-max\` - this label acts the same as \`open-swe\`, except it uses a larger, more powerful model for the planning and programming steps: Claude Opus 4.1. It still uses Claude Sonnet 4 for the reviewer step.
+- \`open-swe-max-auto\` - this label acts the same as \`open-swe-auto\`, except it uses a larger, more powerful model for the planning and programming steps: Claude Opus 4.1. It still uses Claude Sonnet 4 for the reviewer step.
 
 Only provide this information if requested by the user.
 For example, if the user asks what you can do, you should provide the above information in your response.

apps/open-swe/src/routes/github/issue-webhook.ts

@@ -175,15 +175,15 @@ webhooks.on("issues.labeled", async ({ payload }) => {
       },
       autoAcceptPlan: isAutoAcceptLabel,
     };
-    // Create config object with Claude Opus 4 model configuration for max labels
+    // Create config object with Claude Opus 4.1 model configuration for max labels
     const config: Record<string, any> = {
       recursion_limit: 400,
     };
 
     if (isMaxLabel) {
       config.configurable = {
-        plannerModelName: "anthropic:claude-opus-4-0",
-        programmerModelName: "anthropic:claude-opus-4-0",
+        plannerModelName: "anthropic:claude-opus-4-1",
+        programmerModelName: "anthropic:claude-opus-4-1",
       };
     }
 

packages/shared/src/open-swe/models.ts

@@ -11,6 +11,10 @@ export const MODEL_OPTIONS = [
     label: "Claude Sonnet 4",
     value: "anthropic:claude-sonnet-4-0",
   },
+  {
+    label: "Claude Opus 4.1",
+    value: "anthropic:claude-opus-4-1",
+  },
   {
     label: "Claude Opus 4",
     value: "anthropic:claude-opus-4-0",