# Aider v0.56.0: `--models` renamed to `--list-models`, prompt caching via OpenRouter

> The `--models` flag is renamed to `--list-models`, which will break scripts and aliases using the old name. The release also enables Sonnet prompt caching through OpenRouter and 8k output tokens for Sonnet on VertexAI and DeepSeek V2.5.

| | |
|---|---|
| **Tool** | Aider |
| **Version** | v0.56.0 |
| **Kind** | release |
| **Published** | 2024-09-09 |
| **Observed** | 2026-08-11 |
| **Significance** | 3/5 |
| **Breaking** | yes |
| **Categories** | breaking, api-change, feature, model-support |

## What changed


- **Renamed `--models` to `--list-models`**
- Prompt caching enabled for Sonnet via OpenRouter
- 8k output tokens enabled for Sonnet on VertexAI, and for DeepSeek V2.5
- New `/report` command opens a browser with a pre-filled GitHub issue
- New `--chat-language` to set the spoken language
- `--[no-]suggest-shell-commands` now gates both suggesting and offering to execute shell commands
- Key imports checked at launch with a clearer error when dependencies are missing
- Assorted crash fixes


## Sources

- [github_release](https://github.com/Aider-AI/aider/releases/tag/v0.56.0) — retrieved 2026-08-11

## Community

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and never blended._

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Canonical: https://changelogs.info/aider/v0-56-0
Entity: https://changelogs.info/aider
Event ID: `evt_2024-09-09_aider_v0-56-0`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.