OpenCode v1.18.12 fixes Azure GPT-5.5+ reasoning failures and composer lag

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Tools official 1 src. ~1 min

OpenCode v1.18.12 (Aug 4, 2026) fixes Azure GPT-5.5+ completion failures when reasoning is enabled, reduces composer lag when pasting large images, and improves project search to surface any known recent project instead of only the first five.

Why it matters

Reliability fixes for Azure-hosted reasoning models remove a real blocker for teams running OpenCode against Azure OpenAI deployments.

Importance: 1/5

Patch release with targeted bug fixes, no new capabilities.

Sources