feedback_analyzer: A Zero-Cost AI-Powered Customer Feedback Analysis Tool

feedback_analyzer is an automated tool based on Python and Llama 3.1. It processes bulk Excel feedback data for free via the Groq API, enabling sentiment analysis, issue classification, and intelligent summarization. Developed and maintained by JoseManuelMolina, the source code is hosted on GitHub (link: https://github.com/JoseManuelMolina/feedback_analyzer) and was released on May 25, 2026. Its core value lies in helping enterprises solve the pain points of manual feedback analysis—low efficiency, lack of standardization, and high costs—at zero cost.

Customer experience analysis is an important means for enterprises to optimize products and services, but traditional methods face three major challenges:

1. Data Scale Issue: Small and medium-sized businesses can receive thousands of feedback entries monthly, which takes a long time to process manually;
2. Analysis Standardization Issue: Manual judgment of sentiment or issue categories is prone to inconsistencies;
3. Cost Issue: Paid AI tools are not user-friendly for teams with limited budgets. feedback_analyzer aims to solve these problems. By leveraging the free Groq API (which provides Llama3.1 8B inference services) and structured output, users with basic Python knowledge can quickly build a feedback analysis pipeline.

The tool's tech stack includes:

• Data Processing Layer: Pandas (efficient dataframe operations) and Openpyxl (Excel reading/writing and style management);
• AI Inference Layer: Connecting to the Groq Cloud API via the OpenAI SDK, using the Llama3.1 8B model (balancing comprehension ability and response speed);
• Structured Output: Using Llama3.1's Structured Outputs feature to force the model to return JSON-formatted results, avoiding format inconsistency issues.

The tool automatically extracts three types of information for each feedback entry:

1. Sentiment Tendency Analysis: Categorized as positive, negative, or neutral, helping to quickly identify urgent negative feedback and positive review cases;
2. Issue Category Detection: Identifies relevant business areas (e.g., product quality, logistics delivery, customer service response, etc.), facilitating aggregated analysis of concentrated issues;
3. Intelligent Summary Generation: Refines the core points of long feedback, suitable for generating executive summaries. All analysis results are written to a new Excel file, retaining the original data and adding new analysis dimensions for easy subsequent pivot table creation and visualization.

Applicable Scenarios:

• E-commerce after-sales analysis: Batch processing platform reviews and after-sales work orders to analyze satisfaction trends and product issues;
• NPS survey follow-up: Classifying reasons for low-score feedback to guide improvement priorities;
• Customer service work order preprocessing: Automatically labeling urgency and issue types to enable intelligent routing;
• Product iteration decision-making: Aggregating high-frequency pain points to support product roadmaps. Deployment Steps: Clone the repository → Create a virtual environment → Install dependencies → Configure Groq API key → Validate functions using sample data.

The current version has the following areas for improvement:

1. No open-source license is configured; it is recommended to choose MIT or Apache 2.0 to clarify usage terms;
2. Only single-round analysis is supported; future versions can add conversational follow-up functions to deeply explore specific feedback;
3. Although multi-language support has a foundation (Llama3.1 has multi-language capabilities), there is still room for improvement in specific language optimization.

feedback_analyzer demonstrates how to integrate large language models into business processes in a low-cost, easy-to-deploy way, providing an AI analysis entry solution for teams with limited budgets. With the development of free inference platforms like Groq and the iteration of Llama series models, zero-cost AI tools will become more popular, allowing small and medium-sized enterprises to also enjoy the dividends of technological democratization.