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@roomote roomote bot commented Aug 11, 2025

Summary

This PR addresses issue #6942 by improving GLM-4.5 model handling to prevent hallucination and enhance tool understanding.

Problem

GLM-4.5 models were experiencing:

  • Hallucinating files that don't exist even after code indexing
  • Not understanding Roo Code's internal tool calling protocol properly
  • Not condensing content within limits effectively

Solution

Enhanced the ZAiHandler with GLM-specific improvements:

1. System Prompt Enhancements

  • Added clear instructions to prevent file hallucination
  • Included explicit tool usage protocol guidelines
  • Added content management instructions for better response quality

2. Message Preprocessing

  • Enhanced message formatting for better GLM understanding
  • Added clear markers for tool execution results
  • Improved XML tag formatting in assistant messages

3. Model-Specific Parameters

  • Adjusted max_tokens to 32768 for GLM models (prevents issues with very high limits)
  • Added top_p, frequency_penalty, and presence_penalty settings
  • Enhanced completePrompt method with instruction prefix

4. Comprehensive Testing

  • Added tests for GLM-specific system prompt enhancements
  • Added tests for token limit adjustments
  • Added tests for GLM-4.5 and GLM-4.5-Air models
  • All existing tests pass without regression

Testing

  • ✅ All unit tests pass
  • ✅ Linting checks pass
  • ✅ Type checking passes

Related Issue

Fixes #6942


Important

Enhances ZAiHandler for GLM-4.5 models to prevent hallucinations and improve tool understanding with specific prompt and parameter adjustments.

  • Behavior:
    • Enhanced ZAiHandler to prevent hallucinations and improve tool understanding for GLM-4.5 models.
    • Added GLM-specific instructions to system prompts in createMessage().
    • Adjusted max_tokens to 32768 and added top_p, frequency_penalty, and presence_penalty for GLM models.
    • Enhanced completePrompt() with GLM-specific instruction prefix.
  • Message Preprocessing:
    • Improved XML tag formatting in preprocessMessages() for better GLM understanding.
    • Added markers for tool execution results in user messages.
  • Testing:
    • Added tests for GLM-specific enhancements in zai.spec.ts.
    • Verified system prompt enhancements, token adjustments, and model-specific parameters.
    • Ensured all existing tests pass without regression.

This description was created by Ellipsis for 667a79b. You can customize this summary. It will automatically update as commits are pushed.

…nce tool understanding

- Add GLM-specific system prompt enhancements to prevent file hallucination
- Include clear instructions for tool usage protocol and content management
- Implement message preprocessing for better GLM model understanding
- Add token limit adjustments and model-specific parameters for GLM-4.5
- Enhance completePrompt method with instruction prefix for GLM models
- Add comprehensive tests for GLM-specific functionality

Fixes #6942
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Reviewing my own code is like debugging in a mirror - everything looks backwards but the bugs are still mine.

type MainlandZAiModelId,
ZAI_DEFAULT_TEMPERATURE,
} from "@roo-code/types"
import { Anthropic } from "@anthropic-ai/sdk"
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The Anthropic import is included but not directly used in the implementation. Is this intentional? The ApiStream return type annotation also seems to be missing from the override declaration. Consider cleaning up unused imports or adding the proper type annotation:

Suggested change
import { Anthropic } from "@anthropic-ai/sdk"
override async *createMessage(
systemPrompt: string,
messages: Anthropic.Messages.MessageParam[],
metadata?: ApiHandlerCreateMessageMetadata,
): AsyncGenerator<ApiStream>


// Check if the model is GLM-4.5 or GLM-4.5-Air
const modelId = options.apiModelId || defaultModelId
this.isGLM45 = modelId.includes("glm-4.5")
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Could this cause a runtime error if both options.apiModelId and defaultModelId are undefined? Consider adding a null check:

Suggested change
this.isGLM45 = modelId.includes("glm-4.5")
this.isGLM45 = modelId?.includes("glm-4.5") ?? false


// For GLM models, we may need to adjust the max_tokens to leave room for proper responses
// GLM models sometimes struggle with very high token limits
const adjustedMaxTokens = this.isGLM45 && max_tokens ? Math.min(max_tokens, 32768) : max_tokens
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The 32768 token limit is hard-coded here and on line 100. Would it make sense to extract this as a constant like GLM_MAX_TOKENS = 32768 for better maintainability?

const processedContent = msg.content.map((block: any) => {
if (block.type === "text") {
// Add clear markers for tool results to help GLM understand context
if (block.text.includes("[ERROR]") || block.text.includes("Error:")) {
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This string matching logic for detecting errors/success might miss edge cases. What happens if a message contains both "Error:" and "successfully"? Consider using more robust detection or documenting the precedence rules.

)
})

it("should enhance system prompt for GLM-4.5 models", async () => {
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Good test coverage for the GLM-specific enhancements! Consider adding an edge case test for when modelId is undefined to ensure the code handles it gracefully.

@hannesrudolph hannesrudolph added the Issue/PR - Triage New issue. Needs quick review to confirm validity and assign labels. label Aug 12, 2025
@daniel-lxs
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Closing, problem with the model

@daniel-lxs daniel-lxs closed this Aug 13, 2025
@github-project-automation github-project-automation bot moved this from Triage to Done in Roo Code Roadmap Aug 13, 2025
@github-project-automation github-project-automation bot moved this from New to Done in Roo Code Roadmap Aug 13, 2025
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bug Something isn't working Issue/PR - Triage New issue. Needs quick review to confirm validity and assign labels. size:L This PR changes 100-499 lines, ignoring generated files.

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prevent GLM 4.5 from self hallucinating and understand internal tool calling protocol, also allow it is condense content

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