# Brandon Thomas releases AI-generated Microsoft Office replicas with Claude Opus 5.5

Digest AI · Marketing & Small Business · published 2026-10-13T06:53:00Z

Canonical: https://digestai.news/story/brandon-thomas-releases-ai-generated-microsoft-office-replicas-with-cl

## Summary

Brandon Thomas, the developer behind open-source AI-powered Adobe Creative Cloud clones, has now created replicas of Microsoft Office apps using Claude Opus 5.5. WordCraft, GridCraft, and DeckCraft replicate Word, Excel, and PowerPoint respectively, with varying degrees of feature parity. WordCraft supports .docx and other formats, includes offline spelling/grammar checks, and mimics Word’s ribbon and tools. GridCraft claims 89% of Excel’s ribbon commands and 98% of worksheet functions, while DeckCraft targets full PowerPoint parity at 79% feature completion. All three are in alpha, with WordCraft the most advanced at 88% feature parity. Thomas built them in Rust under MIT/Apache 2.0 licenses, but they require significant work before replacing Microsoft Office.

## Key points

- Brandon Thomas used Claude Opus 5.5 to generate open-source Microsoft Office replicas: WordCraft, GridCraft, DeckCraft
- WordCraft supports .docx, offline editing, and 88% of Word’s ribbon commands; GridCraft has 89% of Excel’s ribbon
- All apps are in alpha, with 60% overall feature parity; Thomas says they need more work before viability

## Why it matters

If successful, these could challenge Microsoft’s dominance in productivity software, proving AI can replicate complex apps. For now, they’re proof-of-concept tools, but the approach could accelerate open-source alternatives.

## Sources

1. [The developer who cloned Photoshop using AI has now created Word, Excel, and PowerPoint replicas with Claude](https://techspot.com/news/114179-developer-who-cloned-photoshop-using-ai-has-now.html) (techspot.com, 2026-10-13)

Part of the developing story: [AI Agents Rewrite Software and Clone Office](https://digestai.news/thread/open-source-rea-hits-100-000-github-stars-as-ai-agents-decompile-software) (2 stories)

## Cite

Digest AI, "Brandon Thomas releases AI-generated Microsoft Office replicas with Claude Opus 5.5", 13 October 2026, https://digestai.news/story/brandon-thomas-releases-ai-generated-microsoft-office-replicas-with-cl

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