opencode v1.18.5 released with adaptive-thinking and provider stability fixes
SST
sst/opencode shipped v1.18.5 on July 24, 2026, improving Claude adaptive-thinking handling across response formats, fixing OpenAI responses-phase disruptions, stabilizing Mistral prompt caching/reasoning history, fixing symlink path preservation in grep results, and adding desktop-app support for the current server terminal transport and session timelines.
Why it matters
Continued rapid iteration on the leading open-source terminal coding agent, with fixes touching several major model providers (Claude, OpenAI, Mistral) used interchangeably in opencode.
Importance: 2/5
Minor-version update with real provider-stability fixes to a widely used open-source coding agent.
Sources
official
opencode releases