OpenCode: What's New in April 2026

This release introduces support for the new Mistral Medium 3.5 model with reasoning capabilities and adds a quick toggle for paste summaries in the TUI. Several critical bugs were fixed, including issues with missing desktop sessions, incorrect UTF-8 text handling in the editor, and improved stability when using custom themes.

This release focuses heavily on aligning internal logic and external APIs, ensuring OpenAPI schemas and sync validation now match the HTTP API specifications. Key fixes include cleaner shell cancellation handling and improved TUI dialog responsiveness. Additionally, tool streaming defaults have been adjusted for better compatibility with DeepSeek and Google Vertex setups.

This release focuses on stability for the upgrade process. A key fix addresses an issue where the `opencode upgrade` command would fail for bun installations unless run from a project root directory.

This release introduces the ability to configure a default shell for terminals and agent commands via Desktop settings. It also includes a fix to restore the default toast timeout behavior in the TUI and general improvements to reduce terminal noise during workspace creation.

This release significantly expands the capabilities of the underlying HTTP API, adding numerous new routes for session management, configuration updates, Git initialization, and worktree operations. Key user-facing fixes include improved handling of editor lock detection and correct parsing of configuration permission rules. The TUI also gains support for Zed editor selection context.

This release introduces significant language server protocol (LSP) enhancements, including added Roslyn LSP support for Razor and C# script files. Key fixes address permission configuration preservation and shell command working directory issues. Additionally, context limits for GPT-5.5 with OpenAI OAuth have been corrected to prevent compaction problems.

This release introduces several new experimental HTTP API endpoints for checking server status and managing project files. Key fixes include ensuring DeepSeek assistant messages always include reasoning and resolving an issue with inherited model configurations for interleaved-capability models.

This release focuses on improving package management configuration by respecting custom .npmrc registry settings. Additionally, the TUI interface has been updated to correctly render all text blocks within user messages.

This release focuses on improving state management within session views and ensuring custom project icons are correctly persisted. Additionally, the tool now respects local .npmrc configurations during npm installations.

This release introduces enhanced language server support, enabling diagnostics from C# and Kotlin, and adds a new high reasoning variant for Mistral Small models. Key fixes include improved project detection for Git worktrees and better context retention during long session history summarization.

This release introduces an experimental HTTP API endpoint, GET /config, for configuration access. Several important bug fixes address issues with dynamic imports on Windows, TUI theme regressions, and layout problems in the Desktop server selection dialog. Users can now also hide the session progress bar via a new setting.

This release introduces NVIDIA as a new built-in provider option, enhancing connectivity choices for users. Several critical bugs were fixed, including issues with compiled binary startup and concurrent file edits. Additionally, the tool now preserves recent conversation turns verbatim during compaction to improve local context for follow-up tasks.

This release focuses on core stability by restoring the native ripgrep backend, which resolves issues with file searching and listing functionality. Documentation has also been updated to include details on the --dangerously-skip-permissions CLI flag.

This release focuses on improving reliability across builds and package management, including preserving executable permissions during Docker builds and fixing unnecessary plugin reinstalls. Key updates include better attachment handling based on file content and support for custom telemetry tagging via OTEL_RESOURCE_ATTRIBUTES.

This release focuses on stability and correctness within the core functionality. Key fixes include resolving incorrect routing for workspace requests and preventing unnecessary sync attempts for unshared sessions.

This release focuses on improving session reliability and stability, particularly in the TUI. Key updates include a new flow to restore unavailable sessions and fixes for agent cycling and model loading issues when metadata is incomplete.

This release introduces the LLM Gateway as a new supported provider, complete with configuration and usage reporting. Several key bugs were resolved, including issues with session startup via CLI and file tree visibility on the desktop app. Additionally, remote workspace reconnection reliability has been improved.

This release focuses on stability and usability improvements across the core application and desktop client. Key updates include fixing a crash related to experimental mode and enabling Azure prompt caching for better performance. Users will also benefit from improved session handling and new desktop settings to customize the UI by hiding title bar elements.

This release introduces support for Claude Opus 4.7 with xhigh adaptive reasoning and defaults to showing summarized thinking for this model. Several critical bugs were fixed, including issues with TUI pasting, agent overwriting, and provider error handling during session replay. Additionally, performance improvements were made to the bash tool and workspace synchronization.

This release focuses on stability and reliability, particularly for large file operations by improving snapshot staging. Several minor bugs were resolved, including issues with prompt submission state and OTEL header parsing.

This release focuses on enhancing the AI SDK and API capabilities by exposing new telemetry export options and the experimental question API schema. Additionally, desktop usability is improved by ensuring shell commands start from the correct directory and suppressing initialization errors.

This release introduces experimental control over compaction continuation and adds support for the Alibaba provider. Key fixes include restoring correct context for prompt-time tools, resolving issues with reasoning summary injection for OpenAI-compatible providers, and improving plugin authentication flows. Additionally, image reading is now free against quotas, and snapshots respect `.gitignore` more strictly.

This release introduces fast mode variants for supported Claude and GPT models, enhancing generation speed. A key fix addresses the "agent create" command failing for OAuth-authenticated OpenAI accounts. Additionally, interrupted Bash commands now correctly preserve their final output.

This release focuses on immediate usability improvements. The main changes include removing the initial loading delay in the Desktop application and ensuring subagents in the TUI are clickable immediately upon completion.

This release introduces a crucial security enhancement by adding permission prompts for GitLab Duo Workflow tool calls. Several important bugs were resolved, including fixes for clangd project root detection and issues with session review data consistency. Additionally, the TUI now clearly prompts users when free usage limits are hit.

This release introduces significant new capabilities, including OTLP observability export support and full HTTP proxy support. Key fixes address issues with web fetches and specific provider integrations like OpenRouter. Users will also benefit from improved TUI features like PDF drag and drop and better session management in the Desktop application.

This release focuses on improving the setup experience for Cloudflare Workers AI and AI Gateway by adding prompts for missing account details and clearer error messages. Additionally, a critical input issue on Windows terminals related to keyboard handling has been resolved.

This release introduces expanded support for Azure model options across chat and response paths, and exposes session configuration options via ACP. Several usability improvements were made to the TUI, including better handling of Ctrl+Z on Windows and optional disabling of mouse capture, alongside fixes for plugin installations.

This release focuses on stability by resolving an issue that caused npm installations to fail under specific path conditions. Additionally, minor cleanup was performed by removing an outdated section from the configuration.

This release introduces the ability to reference files directly in review comments using @file mentions. It also enhances usability with new keyboard shortcuts for the question dock and improves stability by ensuring an agent is always available.

This release includes minor updates focused on maintenance and security. The primary change is an update to the VOUCHED list, contributed by a community member.