# opencode 1.17.16: Grok reasoning effort variants, xAI cache routing

> Core release exposes reasoning effort variants for Grok models and improves xAI prompt cache routing plus PDF support in Responses models. The rest is desktop UI work — a composer add menu, inline file browser tabs, and assorted review-pane fixes.

| | |
|---|---|
| **Tool** | opencode |
| **Version** | v1.17.16 |
| **Kind** | release |
| **Published** | 2026-07-09 |
| **Observed** | 2026-08-11 |
| **Significance** | 2/5 |
| **Breaking** | no |
| **Categories** | model-support, feature, fix |

## What changed


**Core**
- Reasoning effort variants exposed for Grok models.
- Better xAI prompt cache routing; PDF file support in Responses models.

**Desktop**
- Open containing folder action for home-screen projects.
- Composer add menu for files, commands, context and shell mode that preserves draft text.
- Provider setup tip on new sessions when no external providers are connected.
- Review panel mode and selected file remembered per session.
- Inline file browser tabs for opening/previewing from the side panel.
- Fixes: review pane minimum width on wide screens, hidden session panes staying mounted, legacy draft and legacy session URL routing, capped initial diffs on large patches, command palette first-open flash, new-session shortcut routing through tabs.


## Sources

- [github_release](https://github.com/anomalyco/opencode/releases/tag/v1.17.16) — retrieved 2026-08-11

## Community

_No curated reactions recorded. Facts and community takes are kept in separate layers
and never blended._

---
Canonical: https://changelogs.info/opencode/v1-17-16
Entity: https://changelogs.info/opencode
Event ID: `evt_2026-07-09_opencode_v1-17-16`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.