待验证50% 置信事实精确时间
The key turning point for Claude Code's performance improvement was the evolution of underlying models: Sonnet 4, Opus 4, and Opus 4.5
1
来源数
50%
置信度
中期 (~90 天)
时效性
2026/7/2
首次发现
有效期至：2026/9/30
来源
The Origin Story of Claude Code: From Internal Experiment to Programming Paradigm Shift
bilibiliClaudeAI2026/6/6
相关事实
已验证Claude Code is powered primarily by Claude 4 Sonnet and Claude 4 Opus models80% 相似待验证Opus 4和Sonnet 4于去年5月发布，之后Claude Code增长进入指数级阶段75% 相似待验证Claude Code may default to calling a Sonnet-level model rather than Opus 473% 相似待验证Opus 4.5在迭代环节表现出色，能继承原始设计精髓并在细节上做出有意义的变化73% 相似已验证Claude Code搭载了Opus 4.6和Sonnet 4.6两个模型72% 相似
引用此条事实
Stable URI
https://kongchang.com/claim/49811API
curl https://kongchang.com/api/v1/knowledge/claims/49811MCP
get_claim(id=49811)