Description

When responding, the model makes one or two subagent calls, and stops before providing the next run. This behavior is absent from 5.2 on the same provider and task, and from other models like Opus 4.6

Plugins

None

OpenCode version

1.1.53

Steps to reproduce

1. Select 5.3-Codex model from the picker (tested with OpenAI Codex as provider)
2. Provide a prompt which causes multiple subagents to be invoked in sequence
3. Observe that runs complete early (model ends its turn early before properly completinh task

Screenshot and/or share link

Operating System

MacOS 26.2

Terminal

iTerm2