The Kryotta blog

Guides and comparisons on working with every AI model — Claude, Gemini, Llama, Mistral, DeepSeek and more — plus what we're building.

Invoices and calculator on a desk beside a laptop, natural daylight from the side
AI Comparison

Claude vs Gemini for VAT returns: I tested 50 B2C invoices and refund credits

I tested Claude Sonnet 4.5 and Gemini Pro on 50 real VAT invoices—UK sales, Irish cross-border, and refund credits. Here's which model handles each scenario correctly, and why format matters as much as math.

September 18, 2026 · 9 min read
Desk with return requests, baby clothes, sandals, and phone showing mobile money app in natural light
AI Comparison

I used AI to reply to 180 Jumia return requests in one week: which model understood the refund policy

I tested Claude, Gemini and DeepSeek to auto-draft replies to 180 return requests after a clearance sale. Here's which model best understood Jumia's refund policy and customer frustration.

September 13, 2026 · 9 min read
Developer reviewing code on three monitors with highlighted diffs in different colors, desk lamp and scattered notes visible
Code Review

I used 3 AI models to review 60 pull requests: checklist for which model per task

I tested Claude, Gemini, and DeepSeek on 60 real pull requests. Each model excelled at different tasks—here's the checklist for which one to use when.

September 12, 2026 · 8 min read
Business owner reviewing printed invoices and GST documents at a desk with a laptop and calculator in natural afternoon light
AI Comparison

Claude vs Gemini for GST invoices: I tested 100 B2B bills and refund notes

I tested Claude and Gemini on 100 real GST invoices, credit notes, and inter-state bills. Here's which model got the tax splits right, which hallucinated HSN codes, and the prompts I now use weekly.

September 6, 2026 · 9 min read
Developer debugging code late at night with laptop, payment dashboards visible, coffee cup and scattered notes on desk
Developers

I used 3 AI models to debug a Paystack webhook: which one found the actual error

I ran the same broken Paystack webhook code through Claude, Gemini, and DeepSeek to see which AI model spotted the missing signature verification fastest—and what that tells us about debugging with AI.

August 29, 2026 · 9 min read
Small business owner reviewing customer emails at desk with e-commerce materials and candlelight in background
AI Comparison

Claude vs Gemini for Stripe refund emails: I tested 100 angry customer replies

I tested Claude Sonnet 4.5 and Gemini Flash on 100 real angry refund requests across three e-commerce stores. One model kept inventing tracking numbers. Here's what actually works.

August 29, 2026 · 9 min read
Developer debugging code at laptop with error logs visible, coffee cup and notes on desk, morning light from window
Debugging

I used Claude and Gemini to debug 30 Shopify checkout errors: which reasoning model actually found the root cause

I debugged 30 Shopify checkout errors using Claude and Gemini to see which reasoning model actually found the root cause. Here's what each one caught—and missed.

August 26, 2026 · 8 min read