OpenCode — September 2026 Releases
9 releases in September 2026.
- v1.18.34 (September 30, 2026) — Core Bugfixes - Send namespaced session and parent-session identity headers with model requests. - Re-sign locally compiled macOS binaries so they run
- v1.18.33 (September 28, 2026) — Core Bugfixes - Cloudflare AI Gateway models now honor provider response and stream timeouts. (@danlapid) - MCP browser launch failures are now report
- v1.18.32 (September 21, 2026) — Core Bugfixes - Fixed Bedrock image attachments so they are only hoisted for Claude, Nova, and Llama 4 models. - Fixed Together AI streaming usage rep
- v1.18.31 (September 14, 2026) — Core Bugfixes - Restored ACP session model, effort, mode, and reasoning chunk boundaries when loading, resuming, or forking sessions. (@JacobNWolf) TU
- v1.18.30 (September 9, 2026) — Core Improvements - Added the Astra system prompt for GPT-6 models. Bugfixes - Preserved Bedrock DeepSeek model IDs, including ARN-based IDs, so they
- v1.18.29 (September 4, 2026) — Core Bugfixes - Allow Codex OAuth model filtering to recognize integer GPT versions like gpt-6 - Fixes issue of gpt-6-astra not showing up for openai
- v1.18.28 (September 4, 2026) — Core Improvements - Send the session ID as GitHub Copilot's interaction header to improve request tracking across a session. Desktop Bugfixes - Use th
- v1.18.27 (September 2, 2026) — Core Bugfixes - Default provider header timeouts to five minutes so slow model startups fail less often. - Default streamed chunk timeouts to five min
- v1.18.26 (September 1, 2026) — Core Bugfixes - Claude 5 sessions now tolerate stale thinking blocks instead of failing after prompt or tool changes. - Bedrock GPT-5.6 models now acc