OpenCode Subagents fail due to unsupported parameter on gpt-5.6-sol-fast
brandon-julio-t · ghdev · 2026-08-19
A user reported that Subagents using gpt-5.6-sol-fast (variant max) in OpenCode stop working after executing tools. Logs reveal the failure is caused by OpenCode sending the unsupported promptcacheretention option to the model. Multiple subagent sessions failed to complete tasks due to this error within a short period, with logs clearly indicating an invalid parameter error.
More from coding & agent
- Architects vs gardeners: developer argues AI's plan-maxxing obsession hurts good work — nptacek · 2026-10-16
- OpenRouter launches Armor beta to block out-of-policy agent tool calls before execution — dfinke · 2026-10-16
- Meta's coding-optimized open-weight Muse Spark Open lands on Modal with 1M context — AAAzzam · 2026-10-16
- Google rewrites its SRE book for the 10th anniversary, adding agentic-era guidance — RealGeneKim · 2026-10-16
- GRPO post-training collapses model distributions, clashing with long-horizon agents — zsakib_ · 2026-10-16
- Dev uses Claude to draw animated mascot GIFs frame-by-frame in code until usage runs out — jeremy_goldberg · 2026-10-16