# Evaluating Model Cost and Quality for Developer Workflows

DevFeed: [Evaluating Model Cost and Quality for Developer Workflows](<https://devfeed.tech/articles/your-work-might-not-need-the-smartest-model-23837.md>)

Original publisher: [Read original article](<https://devblogs.microsoft.com/blog/your-work-might-not-need-the-smartest-model/>)

Author: Waldek Mastykarz

Published: 2026-09-09T09:14:04Z

Content type: comparison

Language: en

Sources: [Developer Blogs](<https://devfeed.tech/sources/developer-blogs.md>)

Topics: [Claude](<https://devfeed.tech/topics/claude.md>), [GitHub Copilot](<https://devfeed.tech/topics/github-copilot.md>), [Visual Studio Code](<https://devfeed.tech/topics/visual-studio-code.md>), [Testing](<https://devfeed.tech/topics/testing.md>), [upgrade](<https://devfeed.tech/topics/upgrade.md>), [Code](<https://devfeed.tech/topics/code.md>)

Tags: [agent-experience](<https://devfeed.tech/tags/agent-experience.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ax](<https://devfeed.tech/tags/ax.md>), [claude](<https://devfeed.tech/tags/claude.md>), [comparison](<https://devfeed.tech/tags/comparison.md>), [cost](<https://devfeed.tech/tags/cost.md>), [evaluation](<https://devfeed.tech/tags/evaluation.md>), [github-copilot](<https://devfeed.tech/tags/github-copilot.md>), [model](<https://devfeed.tech/tags/model.md>), [testing](<https://devfeed.tech/tags/testing.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>), [visual-studio-code](<https://devfeed.tech/tags/visual-studio-code.md>), [windows](<https://devfeed.tech/tags/windows.md>)

## AI overview

This article compares GPT-6 Astra with Claude Sonnet 4.6 across code upgrade scenarios in GitHub Copilot Chat for Visual Studio Code on Windows. It argues that teams should evaluate models on their own repositories and workflows because higher cost did not consistently produce better results in the reported tests.

## Source excerpt

The smartest model can cost five times more and deliver the same result, or even a worse one. See how evaluating your own work helps you get more value from your agent budget. The post Your work might not need the smartest model appeared first on Microsoft for Developers.