Unverified50% confidenceFactExact time
Claude Code, ChatGPT, and Cursor all use the Harness runtime.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
9/25/2026
First Seen
Valid until: 12/24/2026
Sources
Related Entities
Related Claims
UnverifiedThe backend of Claude Code is essentially a standard Harness engineering implementation.71% similarUnverifiedClaude Code had previously run exclusively in command-line form.70% similarUnverifiedClaude Code's Skill system is similar to ChatGPT's Custom Instructions but with finer granularity, stronger programmability, and the ability to interact directly with the local file system and command line.70% similarUnverifiedClaude Code的命令行设计使其可以直接调用Git、Docker、包管理器等工具链，无需额外的插件桥接层69% similar
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