OpenAI Codex developer says two parallel agents is the limit after a $19,300 run

Sep 21, 2026 · Issue 8 · 1 source, 1 article

An OpenAI Codex developer said on 21 September that two parallel agents is the practical limit, after one run cost $19,300.

Who is affected and how

tech lead

Set cost caps and alerts for agent runs.

CTO

With parallel agents, costs can escalate quickly.

Narrative: The end of cheap, unlimited AI coding

Sources

• An OpenAI Codex developer says two parallel agents is the limit, after a $19,300 runmixed news · Sep 21, 2026

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