OpenCode v1.18.12

OpenCode v1.18.12 was released on .

Summary

Core Bugfixes - Fixed Azure GPT-5.5+ completion requests failing when reasoning is enabled. (@frederiknsgo) Desktop Bugfixes - Reduced composer lag when drafts include large pasted images or attach...

Release Context

  • This was the 173rd OpenCode release of 2026 tracked by Havoptic.
  • It shipped 3 days after OpenCode v1.18.11 (August 1, 2026).

Shipped around the same time

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Release Notes

Core Bugfixes - Fixed Azure GPT-5.5+ completion requests failing when reasoning is enabled. (@frederiknsgo) Desktop Bugfixes - Reduced composer lag when drafts include large pasted images or attachments. - Let project search match any known recent project instead of only the first five. (@NumerousJLs) - Cleared stale assistant errors from the timeline once the same turn resumes streaming. - Skipped legacy config reads against v2 servers to avoid spurious config loading issues. (@resetsix) Thank you to 4 community contributors: - @resetsix: - fix(app): skip legacy config reads for v2 (40211) - @NumerousJLs: - fix(app): search every known project in the open project dialog (40202) - @MagnumGoYB: - docs: remove obsolete vouch system section (40266) - @frederiknsgo: - fix: gpt-5.5+ in combination with azure fails with reasoningEffort (40265)

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