Radimaging Ltd - Paul Beck's Technical Working Notes for Microsoft Technology: Claude

Thursday, 7 August 2025

GitHub Copilot with Claude Sonnet 4 is amazing, and GPT 5 is even better

I couldn't sleep, so I decided to build a Pulumi C# application that uses an existing MCP Server. My forms will utilise the client to allow me to access my Azure subscriptions and resources - wow. Build a really cool tool quickly - Claude Sonnet 4 is once again significantly better than GPT-4.1 for programming with GitHub Copilot.

Update Sept 2025: I'm now using GPT-5 over Claude Sonnet with GitHub Copilot when programming in VS Code. Both feel about the same quality to me.

GitHub have this for comparing AI models for GHCP, which is very useful.

I am using GPT-5-Codex, which "is a version of GPT-5 optimised for agentic coding in Codex".

I am also really liking GitHub Copilot code review

Anthropic's Claud 4.5 is also excellent..

Wednesday, 29 January 2025

AI Copilot comparrison

Lunchtime play ... Claude.io was the best I used... Deepseek didn't work....

AI Engine Comparison Test:

I recently asked a few AI engines a complex tax query:

Perplexity Pro (paid): While I love the app, the answer was not great, 6/10

ChatGPT (free): Excellent, factually correct, not too clear in one area, 8/10

DeepSeek: I registered and tried the search, but got the result "The server is busy. Please try again later." I tried a few times, and it is working for common queries. However, I assume that since this logic wouldn't be cached, it can't even attempt to work with the free version, 2/10.

Bing/M365 Copilot: Got a fairly similar result to ChatGPT, missing an option and not as well laid out, 7/10

Claud.io: Clean result that is factually correct and offers possible items that would affect the calculation, 10/10

Perplexity Pro is my default AI AI-powered search Engine on my iPhone:

Perplexity and the others are great for teaching me this (I use a homemade flip learning type approach), and here are my "follow-on" questions. However, to truly understand something, I still use books (mixed with perplexity), but nothing beats a human-written or recorded topic to give the best understanding.