Sep 9, 2026release
opencode v1.18.30: Astra system prompt for GPT-6, provider SDK updates
opencode v1.18.30, released September 9, 2026, lands a new system prompt plus a batch of provider-side fixes.
Core
- Astra system prompt for GPT-6 models — GPT-6 sessions now use a dedicated system prompt tuned for the new model family.
- Bedrock DeepSeek model IDs preserved — including ARN-based IDs, so cross-region inference profile references resolve correctly (thanks @YeEmrick).
- GitLab reasoning effort variants — supported GitLab GPT and Claude models gain explicit effort tiers (@far-ouq).
Provider SDK updates
Both the Azure and OpenAI provider SDKs were bumped to pick up upstream compatibility fixes — worth updating if you saw request failures on either provider this week.
source: https://github.com/anomalyco/opencode/releases/tag/v1.18.30