Codex caps subagents at 3 by default — one config line raises it to 64
altryne · x · 2026-09-07
danielmac8 notes Codex only runs 3 subagents concurrently by default — not enough for 'Astra', reportedly tested by OpenAI with up to 64. altryne replies that Codex sessions are easier to manage and have no such limit, sharing the fix: add [agents] maxconcurrentthreadspersession = 64 to config.toml to orchestrate 64 Luna subagents in parallel.
Related event: Codex caps subagents at 3 by default; one config line unlocks 64(5 posts)→
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