Since its release on February 5, 2026, Opus 4.6 has powered everything from indie side projects to 40K-star production platforms. We crawled GitHub Search, Topics, commit signatures, config files, and developer profiles to build a comprehensive census — including hidden integrations and developers who never pushed code before.
A dependency-free C compiler written entirely in Rust by Claude Opus 4.6. Targets x86-64, i686, AArch64, and RISC-V. Successfully compiles PostgreSQL, Redis, CPython, FFmpeg, DOOM, QEMU, and 150+ other projects. Features an SSA-based IR with 15 optimization passes, a custom assembler and linker, and DWARF debug info generation.
Data from GitHub Search API, commit signatures, code search, Topics (claude-opus-4-6, opus-4-6), and user profile analysis of 218 unique developers across 245 repos. All charts computed dynamically from the library.
We profiled 191 individual developers who published Opus 4.6 repos. 18 are "re-energized veterans" — accounts 6-17 years old that were effectively dormant (some with as few as 1 repo in a decade) before Opus 4.6 woke them up.
The 15 highest-starred public repos referencing Claude Opus 4.6 — from massive platform integrations to dedicated projects.
Standout projects across different domains — from smartwatches to raft survival games to legal AI.
Opus 4.6 is available to all GitHub Copilot tiers. These 245 repos are the visible tip — the model is silently powering millions of Copilot sessions.
A 10-year-old GitHub account that exploded with activity in March 2026. This is what "re-energized by AI" looks like — detectable via CLAUDE.md files, Co-Authored-By commit signatures, and creation date clustering.
Account since May 2016. "Just plain helpful." Previously built Linux thin-client configs, DDNS tools, and Discord bots. Then in February-March 2026: 12 new repositories in 6 weeks, almost all co-authored with Claude Opus 4.6. Building GNOME Shell extensions, MCP servers, voice interfaces, and Claude Code tooling. 6 repos contain CLAUDE.md files. 7 have explicit Opus 4.6 co-author commit signatures.
Not every Opus 4.6 project announces itself. We used 5 distinct detection signals — from obvious README mentions to buried config files and commit forensics — to build this census. Here's the playbook for finding hidden AI-assisted code.
Every public repo we found referencing Claude Opus 4.6 — from explicit topic tags to hidden config files and co-author commit signatures. Searchable and filterable.