[KongchangAI]
Unverified60% confidenceEventExact time

On August 19, 2026, OpenAI officially open-sourced Codex Harness.

2
Sources
60%
Confidence
Long-term
Relevance
8/26/2026
First Seen

Sources

Codex Harness Goes Open Source: AI Moats Shift from Models to Runtimes

Related Entities

OpenAIcompanyCodex Harnessproduct

Related Claims

UnverifiedOpenAI released a predecessor to Codex CLI as early as 2023, which was still primarily text-instruction-based at the time.71% similar

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