Unverified50% confidenceFactExact time
OpenAI released a predecessor to Codex CLI as early as 2023, which was still primarily text-instruction-based at the time.
1
Sources
50%
Confidence
Long-term
Relevance
9/29/2026
First Seen
Sources
Related Entities
Related Claims
VerifiedCodex CLI was officially opened in 2025, allowing developers to invoke it directly in a local terminal.75% similarVerifiedThe earlier Codex API was released by OpenAI in 2021.71% similarUnverifiedOn August 19, 2026, OpenAI officially open-sourced Codex Harness.71% similarUnverified命令行编程助手在2024年迎来爆发期，Aider、Claude Code、Codex CLI等工具相继推出69% similar
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