OpenCode 1.17.19–1.17.20: OpenAI Pro Reasoning Mode and Per-Prompt Model Selection
SST
Two releases shipped July 13: v1.17.19 enables OpenAI pro reasoning mode, adds OAuth for Luna Responses Lite, disables xAI response storage by default, and introduces per-prompt model selection in the composer alongside a redesigned attachment-card UI with persistent file-browser tabs. v1.17.20 removes an obsolete Codex workaround that could interfere with Luna Responses Lite requests and refreshes Azure AI support for GPT-5.6.
Why it matters
Per-prompt model switching lets developers mix a reasoning model for one turn and a fast model for the next without reconfiguring the session—relevant when running both pro-reasoning and cost-efficient models in the same workflow.
Importance: 2/5
Two patch releases adding pro reasoning mode and per-prompt model selection; UX improvement for multi-model workflows