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Abel Mhlanga
Abel Mhlanga

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"Gemma 4 Analyzed My Bank Statements – Apparently I 'Have a Problem' with Coffee and Late-Night Apps"

Gemma 4 Challenge: Build With Gemma 4 Submission

This is a submission for the Gemma 4 Challenge: Build with Gemma 4

What I Built

Bank statement Analyzer — upload 3–6 months of statements, get a breakdown of spending patterns, subscriptions you forgot about, anomalies, and concrete suggestions to cut your costs.

Demo

Code

GitHub logo AbelCodeCanvas / my-bank-app

Bank statement Analyzer — upload 3–6 months of statements, get a breakdown of spending patterns, subscriptions you forgot about, anomalies, and concrete suggestions to cut your costs.

markdown

💰 Bank Statement Analyser

Upload 3–6 months of bank statements and get a clear breakdown of:

  • 📊 Spending patterns – where your money really goes
  • 🔁 Subscriptions you forgot about – recurring charges you might not need
  • ⚠️ Anomalies – unusual or unexpected transactions
  • ✂️ Concrete suggestions – actionable advice to cut costs

Powered by Gemma 4 26B A4B instruction‑tuned model via Hugging Face.


📋 Prerequisites

Before you begin, make sure your local machine has:

  • Python 3.9 or higher (recommended: 3.10)
  • Git – to clone the repository
  • A Hugging Face account (free) with a User Access Token Create one here
  • At least 16 GB RAM (32 GB recommended)
  • GPU with 12+ GB VRAM (optional but strongly recommended for fast inference) – if no GPU, the app will fall back to CPU (very slow for 26B model)

Note: The 26B A4B model is large but uses Mixture‑of‑Experts to reduce compute…

How I Used Gemma 4

For my Bank Statement Analyser, I used Gemma 4 26B A4B (the instruction-tuned variant) on Hugging Face. While not exactly one of the standard sizes (E2B, E4B, or 31B Dense), this 26B parameter model strikes an ideal balance for the task:

Long context handling – Bank statements over 3–6 months contain hundreds of transactions. The model’s large context window lets me feed entire statements without chunking, preserving temporal patterns.

Structured extraction – Gemma 4’s instruction-tuning excels at parsing semi-structured data (PDF/CSV statements) and outputting consistent JSON breakdowns of spending, subscriptions, and anomalies.

Reasoning for suggestions – The 26B size provides enough reasoning capacity to identify cost-cutting opportunities (e.g., duplicate subscriptions, high-fee accounts, irregular charges) without the latency or cost of a dense 31B model.

A4B efficiency – The Mixture-of-Experts (A4B) architecture reduces compute per token, making it feasible to run locally or on a free Hugging Face T4 GPU.

In short, Gemma 4 powers the entire pipeline: statement parsing → spending categorization → anomaly detection → actionable recommendations.

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