OpenCode v1.17.9

OpenCode v1.17.9 was released on .

Summary

Core Bugfixes - Honor configured agent step limits by forcing a final text response instead of failing mid-run. - Fix Devstral model detection when provider IDs use different casing. (@Robin1987Chi...

Release Context

  • This was the 149th OpenCode release of 2026 tracked by Havoptic.
  • It shipped 3 days after OpenCode v1.17.8 (June 17, 2026).

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Release Notes

Core Bugfixes - Honor configured agent step limits by forcing a final text response instead of failing mid-run. - Fix Devstral model detection when provider IDs use different casing. (@Robin1987China) - Pass configured custom headers to Copilot model requests. Improvements - Add high and max thinking variants for GLM-5.2 across supported providers. (@imranshaiedi-byte) - Stop wrapping follow-up user messages in a steering reminder so prompt caching stays effective. TUI Bugfixes - Only show the background subagent shortcut when the server supports it. Thank you to 4 community contributors: - @Grantmartin2002: - fix(core): fix command docs in customize-opencode skill (32718) - @Robin1987China: - fix(opencode): use toLowerCase for Devstral model detection (33109) - @kimnamu: - fix(experimental llm pkg): forward topK to Converse via additionalModelRequestFields (33030) - @imranshaiedi-byte: - feat(opencode): expose High/Max thinking variants for GLM-5.2 (32446)

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