Aspose.Words 25.9 AI fails with custom OpenAIModel on .NET 8

Aspose.Words Product Family
1

Hello Aspose Support Team,

We are a reseller, reporting an issue from our customer.

Environment:
Product: Aspose.Words for .NET v25.9
Runtime: .NET 8

Scenario:
Using Aspose.Words AI features
Custom AI model inherited from Aspose.Words.AI.OpenAiModel
Backend AI providers: Zhipu AI (智谱) and Kimi
Model URL is configured to the corresponding API endpoint

Issue:
Calls to AiModel.Translate(…) or AiModel.Summarize(…) fail
Exception is thrown inside Aspose.Words.dll (e.g. NullReferenceException)
The same logic works when using official OpenAI services, but fails with Zhipu/Kimi

The relevant information has been uploaded as an attachment.

1064×357 23.5 KB

1792×679 49.3 KB

Best regards,

2

@wangwang1

  • Are the Zhipu AI and Kimi API endpoints fully compatible with the OpenAI API schema (e.g. same request/response structure, field names, authentication method)?
  • Can you confirm if the custom OpenAiModel implementation correctly sets all required properties (e.g. BaseUrl, ApiKey, ModelName) for Zhipu and Kimi?
  • Does the exception occur during HTTP request execution or during response deserialization in Aspose.Words?
  • Have you validated that the API keys and endpoints for Zhipu/Kimi work outside Aspose.Words (e.g. via curl or Postman)?
  • Is the NullReferenceException thrown before or after the HTTP call is made to the custom endpoint?
  • Can you share the stack trace of the exception (without sensitive data)?
3

The file is quite large, so we have uploaded it to Google Drive.
Please download it via the link below:
https://drive.google.com/file/d/1nKjH7CpM-c7bN8XoorT7dpGsDmvQ4BL6/view?usp=sharing

4

@wangwang1 Does Zhipu AI (智谱) and Kimi are subset of OpenAI model? Currently Aspose.Words can work only with OpenAI , Google an Anthropic AI models.