Issue: Using Openrouter As The Backend API Provider, Responses Are Not Received Correctly

Mar 12, 2025 by ADMIN 90 views

Introduction

OpenRouter is a powerful backend API provider that enables developers to build scalable and efficient applications. However, in some cases, responses from OpenRouter may not be received correctly, leading to unexpected behavior in the application. In this article, we will explore the issue of OpenRouter responses not being received correctly and provide a step-by-step guide to reproduce and resolve the problem.

Check Existing Issues

Before we dive into the issue, it's essential to check if there are any existing issues or discussions related to this problem. In this case, we have searched the existing issues and discussions, and we are using the latest version of Open WebUI.

Installation Method

We are using Docker as the installation method, which is a popular and efficient way to deploy applications.

Open WebUI Version

We are using Open WebUI version v0.5.20, which is the latest version available.

Ollama Version (if applicable)

In this case, we are not using Ollama, so there is no response to provide.

Operating System

We are using Ubuntu 24.04 as the operating system, which is a popular and stable Linux distribution.

Browser (if applicable)

In this case, we are not using a browser, so there is no response to provide.

Confirmation

We have read and followed all instructions in README.md, and we are using the latest version of both Open WebUI and Ollama. We have also included the browser console logs and Docker container logs, which will be useful in reproducing and resolving the issue.

Expected Behavior

When using a deep thinking model, OpenRouter returns a format that includes the "reasoning" string in JSON. However, OpenWebUI does not recognize this format and skips the initial return of "reasoning" until the thinking process ends and it starts returning the "content" content.

Actual Behavior

Steps to Reproduce

To reproduce this issue, follow these steps:

Install Open WebUI and OpenRouter: Install Open WebUI and OpenRouter using Docker.
Create a Deep Thinking Model: Create a deep thinking model using OpenRouter.
Send a POST Request: Send a POST request to OpenRouter using Postman.
Observe the Response: Observe the response from OpenRouter, which should include the "reasoning" string in JSON.
Check OpenWebUI Output: Check the output from OpenWebUI, which should not include the "reasoning" content.

Logs & Screenshots

The following logs and screenshots will be useful in reproducing and resolving the issue:

Browser Console Logs: The browser console logs will show the output from OpenWebUI, which should not include the "reasoning" content.
Docker Container Logs: The Docker container logs will show the output from OpenRouter, which should include the "reasoning" string in JSON.
Screenshots: The screenshots will show the output from OpenWebUI, which should not include the "reasoning" content.

Additional Information

Additionally, for some reason, the first token output by OpenWebUI is always very slow, with a long waiting process. However, it can be seen in the backend of the API service that the API returns the first token in 0.7 seconds.

Conclusion

In conclusion, the issue of OpenRouter responses not being received correctly is a complex problem that requires a thorough understanding of the OpenRouter and OpenWebUI architecture. By following the steps outlined in this article, developers can reproduce and resolve this issue, ensuring that their applications receive the correct responses from OpenRouter.

Troubleshooting Tips

Here are some troubleshooting tips that may help resolve this issue:

Check the OpenRouter Configuration: Ensure that the OpenRouter configuration is correct and that the API is returning the expected response.
Check the OpenWebUI Configuration: Ensure that the OpenWebUI configuration is correct and that the application is receiving the expected response from OpenRouter.
Check the Network Connection: Ensure that the network connection between OpenRouter and OpenWebUI is stable and that there are no issues with the API request.
Check the Browser Console Logs: Check the browser console logs to see if there are any errors or warnings that may indicate the cause of the issue.

Q: What is the issue with OpenRouter responses not being received correctly?

A: The issue with OpenRouter responses not being received correctly is that OpenWebUI does not recognize the format returned by OpenRouter, which includes the "reasoning" string in JSON. As a result, OpenWebUI skips the initial return of "reasoning" until the thinking process ends and it starts returning the "content" content.

Q: What are the expected and actual behaviors of OpenRouter and OpenWebUI?

A: The expected behavior of OpenRouter is to return a format that includes the "reasoning" string in JSON. However, the actual behavior of OpenRouter is to return a format that includes the "reasoning" string in JSON, but OpenWebUI does not recognize this format and skips the initial return of "reasoning" until the thinking process ends and it starts returning the "content" content.

Q: How can I reproduce this issue?

A: To reproduce this issue, follow these steps:

Install Open WebUI and OpenRouter: Install Open WebUI and OpenRouter using Docker.
Create a Deep Thinking Model: Create a deep thinking model using OpenRouter.
Send a POST Request: Send a POST request to OpenRouter using Postman.
Observe the Response: Observe the response from OpenRouter, which should include the "reasoning" string in JSON.
Check OpenWebUI Output: Check the output from OpenWebUI, which should not include the "reasoning" content.

Q: What are the logs and screenshots that I need to provide to reproduce and resolve this issue?

A: The following logs and screenshots will be useful in reproducing and resolving the issue:

Browser Console Logs: The browser console logs will show the output from OpenWebUI, which should not include the "reasoning" content.
Docker Container Logs: The Docker container logs will show the output from OpenRouter, which should include the "reasoning" string in JSON.
Screenshots: The screenshots will show the output from OpenWebUI, which should not include the "reasoning" content.

Q: What are some troubleshooting tips that I can use to resolve this issue?

A: Here are some troubleshooting tips that may help resolve this issue:

Check the OpenRouter Configuration: Ensure that the OpenRouter configuration is correct and that the API is returning the expected response.
Check the OpenWebUI Configuration: Ensure that the OpenWebUI configuration is correct and that the application is receiving the expected response from OpenRouter.
Check the Network Connection: Ensure that the network connection between OpenRouter and OpenWebUI is stable and that there are no issues with the API request.
Check the Browser Console Logs: Check the browser console logs to see if there are any errors or warnings that may indicate the cause of the issue.

Q: How can I ensure that my application receives the correct responses from OpenRouter?

A: To ensure that your application receives the correct responses from OpenRouter, follow these best practices:

Use the Correct API Endpoint: Ensure that you are using the correct API endpoint for OpenRouter.
Use the Correct API Request Method: Ensure that you are using the correct API request method (e.g., POST, GET, PUT, DELETE).
Use the Correct API Request Body: Ensure that you are using the correct API request body (e.g., JSON, XML).
Check the API Response: Check the API response to ensure that it is correct and that it includes the expected data.

By following these best practices and troubleshooting tips, you can ensure that your application receives the correct responses from OpenRouter and that you can resolve any issues that may arise.