OpenAI Codex CLI v0.149.1 stable adds thread-source classification and image-budget compaction
OpenAI
OpenAI released Codex CLI v0.149.1 as Latest stable on 2026-08-24, alongside alpha tags 0.149.0-alpha.7.2 / 0.149.0-alpha.4.3 (22-23 Aug) and 0.150.0-alpha.7 (22 Aug). v0.149.1 introduces a global `codex exec --thread-source <SOURCE>` flag propagated to new and forked threads and surfaced as `threadSource` in the TypeScript SDK, an opt-in `compaction_image_budget` feature that charges retained images using existing size estimates with atomic image-and-label truncation, and sets `thread_source=memory_consolidation` for detached memory requests.
Why it matters
First stable Codex CLI drop of the window; adds the metadata primitives the rest of the agent stack (compaction, observability, forks) will key off.
Importance: 3/5
Frontier OpenAI release; stable promotion of an alpha track covered yesterday