# Aider 0.86.0: GPT-5, Grok-4 and Kimi K2 model support

> Adds support for the full GPT-5 model line, Grok-4 (via `xai/grok-4` and `openrouter/x-ai/grok-4`), `gemini/gemini-2.5-flash-lite-preview-06-17`, and `openrouter/moonshotai/kimi-k2`. Rest is small UX polish and fixes, plus a litellm bump to 1.75.0.

| | |
|---|---|
| **Tool** | Aider |
| **Version** | v0.86.0 |
| **Kind** | release |
| **Published** | 2025-08-09 |
| **Observed** | 2026-08-11 |
| **Significance** | 3/5 |
| **Breaking** | no |
| **Categories** | model-support, feature, fix |

## What changed


- Model support: all GPT-5 models; Grok-4 as `xai/grok-4` and `openrouter/x-ai/grok-4`; `gemini/gemini-2.5-flash-lite-preview-06-17`; `openrouter/moonshotai/kimi-k2`
- `/model` with no argument now prints model announcements
- `/clear` confirms with "All chat history cleared."; `/undo` shows only the first line of each commit message
- Fix: new settings for an existing model failed to replace the old ones
- Fix: analytics updated for the current PostHog SDK event-capture API
- Dependency bump to litellm 1.75.0


## Sources

- [github_release](https://github.com/Aider-AI/aider/releases/tag/v0.86.0) — retrieved 2026-08-11

## Community

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

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Canonical: https://changelogs.info/aider/v0-86-0
Entity: https://changelogs.info/aider
Event ID: `evt_2025-08-09_aider_v0-86-0`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.