Anthropic Engineering Moves Away From Git to Custom Internal Source Control System
Context that changes how you build, even if there's nothing to install.
Between May and September 2026, Anthropic transitioned from Git to 'Antique' to manage a surge in automated merges from ~2,500 to over 30,000 per day.
This is a signal that human-centric development tools are reaching their ceiling as AI-generated code volume explodes.
Git was never built for a world where a 'developer' makes 1,000 commits an hour. Anthropic's shift is the first major proof-of-concept for the 'AI-native SDLC'—expect others to follow as they hit the same wall.
Whether Anthropic open-sources Antique or if it remains a proprietary advantage.
Also covers
- Anthropic Redesigns Internal Source Control System for ScaleAnthropic engineers have shared insights into a total redesign of their internal source control system. The changes were necessary to accommodate the rapid pace of development and the vast scale of codebases associated with training the Claude series.
- This highlights the technical debt that standard tools (like Git) may impose when AI agents start writing the majority of code.
- For teams building large-scale agentic coding systems, Anthropic's reasoning provides a blueprint for next-gen developer tools.
- It suggests that 'Human-centric' tools may be reaching their ceiling in the age of high-velocity AI generation.
Git's performance and design were no longer sufficient for the scale and type of changes Anthropic's agents were producing.