3 people reported
All time, since Sep 27.
Sub-agents silently run on Opus 4.8
“Hours later, spawning a teammate (Agent tool, separate pane process) launched it with --model claude-opus-4-8.”
Is this your bug? What gets counted gets fixed. Pile on.
Paste this into your agent. It files your report, with your error and version.
I hit this bug: rapsheet.dev/sheets/claude-code/issues/1290/file Follow it to file my report. Show me the text before you send.
No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends
Sub-agents silently run on Opus 4.8 after refusal fallback. After a stop_reason: "refusal", Agent-tool subagents or teammates spawned with model: "opus" run on claude-opus-4-8 with no notice to the parent.
Is this your bug?
File my report- Where
- Agent tool
- Versions
- 2.1.280 to 2.1.282
- Platforms
- macOS
- How bad
- Breaks a normal workflow.
Part of: Subagent model not as requested5 bugs
Original reports3, newest first
- Subagents ignore
switchModelsOnFlag: false: after a safety refusal, an Agent-tool subagent silently continues on claude-opus-4-8#98387 - Sub-agents requesting
model: "opus"silently continue on claude-opus-4-8 after a cyber-content refusal — parent report still says "Opus"#97687 - Teammates inherit a stale model after refusal fallback: spawn uses the main-loop override / mainLoopModel, not the session's effective model#97653