# Aider v0.64.0: /editor command, gpt-4o-2024-11-20 support, o1 streaming by default

> Adds a `/editor` slash command that opens your system editor to compose a prompt, full support for the `gpt-4o-2024-11-20` model, and turns on streaming for o1 models by default. Also adds global `extra_params` for litellm and several git/file-handling fixes.

| | |
|---|---|
| **Tool** | Aider |
| **Version** | v0.64.0 |
| **Kind** | release |
| **Published** | 2024-11-21 |
| **Observed** | 2026-08-11 |
| **Significance** | 3/5 |
| **Breaking** | no |
| **Categories** | feature, model-support, fix |

## What changed


- New `/editor` command opens the system editor to write a prompt
- Full support for `gpt-4o-2024-11-20`
- o1 models now stream by default
- `/run` and suggested shell commands confirm how many lines of output were added to the chat
- Optional multiline input tags with matching closing tags
- Model settings gain a global `extra_params` passed to `litellm.completion()`
- Architect mode now offers to add files the LLM suggests
- New `--show-release-notes` controls release-note display on first run of a new version
- `--read` can now load directories recursively
- 1% of users prompted to opt in to analytics
- Fixes: fuzzy model-name matching (including when litellm provider info is missing), git-ignored file handling, git error handling, Timeout exception for provider timeouts, exponential backoff when editor file locks block writes, empty dict cached on model-metadata download failure to delay retry
- Updated Qwen 2.5 Coder 32B model configuration and dependency versions for a litellm ollama fix


## Sources

- [github_release](https://github.com/Aider-AI/aider/releases/tag/v0.64.0) — retrieved 2026-08-11

## Community

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Canonical: https://changelogs.info/aider/v0-64-0
Entity: https://changelogs.info/aider
Event ID: `evt_2024-11-21_aider_v0-64-0`
Licence: event synthesis © changelogs.info, CC BY 4.0. Linked sources belong to their vendors.