OpenCode v1.4.0: SDK Refactor & OTLP Support

TL;DR

• Diff metadata now uses unified patch format instead of full file contents — breaking change
• UserMessage.variant moved to UserMessage.model.variant — update your SDK calls
• OTLP observability export, HTTP proxy support, and TypeScript LSP memory fix

Breaking Changes

• Diff metadata format — Edit and patch tool diffs no longer include to and from fields with full file contents. Now only patch field with unified diff. All snapshot diffs follow this format.
• UserMessage.variant moved — Access via userMessage.model.variant instead of userMessage.variant.

New

• OTLP observability export — Send telemetry to OpenTelemetry collectors for better observability.
• HTTP proxy support — Full proxy configuration now available.
• Model variant keybinding — TUI option to switch model variants via custom keybinding.
• PDF drag and drop — Attach PDFs directly in TUI.
• Auto-approve permissions flag — opencode run --dangerously-skip-permissions auto-approves non-denied prompts.

Fixed

• Web fetch timeouts — Failed fetches no longer leave stale timeouts behind.
• TypeScript LSP memory leak — Native project config reduces memory use significantly.
• Alibaba rate limits — Now retried instead of failing immediately.
• OpenRouter provider issues — Resolved compatibility problems.
• GitHub Copilot reasoning levels — Aligned Anthropic reasoning and removed incorrect Qwen variants.
• Login error messages — Transport errors now clearer.

Desktop & TUI Improvements

• Subagent sessions now have clearer titles, navigation, and progress states.
• Auto-accept permissions moved to Settings.
• Full file names displayed on attachment chips.

Update via: npm install opencode@latest or check the release page for platform-specific instructions.

Source: OpenCode