# Aider v0.78.0: model-setting validation and per-role model switching commands

> Aider now validates whether a model actually supports `--reasoning-effort` and `--thinking-tokens` and ignores them if not, gated by a new `--check-model-accepts-settings` flag. Adds `/editor-model` and `/weak-model` commands to switch model roles mid-session, thinking-token support for OpenRouter Sonnet 3.7, and a `--git-commit-verify` flag controlling whether git commit hooks are bypassed.

| | |
|---|---|
| **Tool** | Aider |
| **Version** | v0.78.0 |
| **Kind** | release |
| **Published** | 2025-03-21 |
| **Observed** | 2026-08-11 |
| **Significance** | 3/5 |
| **Breaking** | no |
| **Categories** | feature, model-support, fix |

## What changed


- Model settings validation: `--reasoning-effort` and `--thinking-tokens` are ignored when the model doesn't support them
- New `--check-model-accepts-settings` flag (default: true) to force unsupported model settings
- Model settings data now annotates which models support `reasoning_effort` and `thinking_tokens`
- New `/editor-model` and `/weak-model` commands to switch Editor Model and Weak Model
- Thinking-token support for OpenRouter Sonnet 3.7
- New `--git-commit-verify` flag (default: False) controls bypassing git commit hooks
- `--aiderignore` now resolves both absolute and relative paths
- AWS_PROFILE support for Bedrock models, as an alternative to explicit credentials
- Added `openrouter/google/gemma-3-27b-it`
- Fixed autocompletion for `/ask`, `/code`, `/architect`; vi-like Enter behaviour in multiline mode
- Improved markdown code-block rendering (NoInsetMarkdown); dependency bump for a litellm Ollama fix


## Sources

- [github_release](https://github.com/Aider-AI/aider/releases/tag/v0.78.0) — retrieved 2026-08-11

## Community

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and never blended._

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Canonical: https://changelogs.info/aider/v0-78-0
Entity: https://changelogs.info/aider
Event ID: `evt_2025-03-21_aider_v0-78-0`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.