Opus 4.5 changed everything

Burke Holland works on GitHub Copilot by day and codes with his AI agents always. Early January, Burke posted about how Opus 4.5 changed everything. We were all still buzzing from the holiday-season 2x usage bump Claude gave us, and Opus 4.5 felt like a genuine step function in capability. Burke and I get into all the details. Opus 4.5 may have started the fire, but GPT-5.3 Codex is certainly living up to the hype.

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Featuring:

• Burke Holland – Website, GitHub, X
• Adam Stacoviak – Website, GitHub, LinkedIn, Mastodon, X

Show Notes:

• Opus 4.5 is going to change everything
• Jon Gjengset Explains Rust 2026
• How we rebuilt Next.js with AI in one week Rebuilding Next.js using AI in a single week
• The era of the Small Giant (Changelog #673)
• Layercode — Voice AI infrastructure for TypeScript developers
• Diffs — An open source diff and code rendering library
• Pierre Computer Company
• Code Storage
• Entire — Developer platform from former GitHub CEO Thomas Dohmke
• Tigris Data
• @traskjd tweet
• GitHub Copilot

Something missing or broken? PRs welcome!