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Agents tracked: 258 Downloads (7d): 219M up 6.1% GitHub stars: 5.5M VS Code installs: 148M Releases (7d): 327 Agent status: 1 with issues Updated Oct 7, 2026
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Aider changelog: what's new each month

Every stable Aider release summarised by month: the highlights, new features, improvements, fixes and anything you need to act on. 3 months covered; the current month updates daily.

August 2025

1 release: 0.86.0

August brought expanded model support across multiple providers including GPT-5, Grok-4, and Gemini 2.5 Flash Lite. Several quality-of-life improvements made the chat interface more readable and informative.

Highlights

  • Added support for all GPT-5 models.
  • Added support for Grok-4 via xAI and OpenRouter.
  • Added Gemini 2.5 Flash Lite Preview model.
  • /undo command now shows only the first line of commit messages for easier reading.
  • /model command now displays model announcements.

New

  • Support for all GPT-5 models.
  • Support for Grok-4 via xai/grok-4 and openrouter/x-ai/grok-4.
  • Support for gemini/gemini-2.5-flash-lite-preview-06-17 model.
  • Support for openrouter/moonshotai/kimi-k2 model.
  • /clear command now prints confirmation message.
  • Model announcements display with /model command.

Improved

  • /undo output now shows only the first line of each commit message.
  • /clear command provides confirmation feedback.

Fixed

  • Fixed an issue where new settings for an existing model didn't replace the old ones.

June 2025

1 release: 0.85.0

June brought support for the latest frontier models including Google's Gemini 2.5 series and OpenAI's o3-pro, along with improvements to thinking tokens configuration and gitignore handling.

Highlights

  • Added support for Google Gemini 2.5 models (pro, flash, and preview) with thinking tokens capability.
  • Support for OpenAI o3-pro model across multiple providers.
  • New --add-gitignore-files flag to include .gitignore-listed files in Aider's editing scope.
  • Enhanced thinking tokens with ability to disable by setting to 0 and improved documentation.
  • Updated model aliases so 'flash' points to gemini-2.5-flash and 'gemini' points to gemini-2.5-pro.

New

  • Support for gemini-2.5-pro, gemini-2.5-flash, and gemini-2.5-pro-preview-06-05 models.
  • Support for OpenAI o3-pro model.
  • Support for Responses API models including o1-pro and o3-pro.
  • --add-gitignore-files flag to enable adding .gitignore-listed files to editing scope.
  • Thinking tokens can now be disabled by setting to 0.

Improved

  • Thinking tokens help text now includes examples.
  • Increased max tokens for Deepseek models to 65536.
  • Updated model aliases for better defaults (flash and gemini now point to latest versions).
  • Updated pricing for o3 models.

May 2025

2 releases: 0.83.0 → 0.84.0

May brought expanded model support across multiple AI providers and refinements to the user experience. The month focused on keeping up with the latest model releases while improving reliability and workflow features.

Highlights

  • Added support for Claude Sonnet 4 and Opus 4 series models.
  • Introduced --attribute-co-authored-by option to add co-authors to commit messages.
  • Files explicitly added on the command line are no longer incorrectly ignored by .gitignore.
  • OpenRouter now automatically caches model metadata for better performance and reliability.

New

  • Support for Gemini 2.5 Pro preview and Gemini 2.5 Flash preview models.
  • Support for Qwen3 235B models.
  • Repo-map support for OCaml and OCaml interface files.
  • Spinner animation while waiting for LLM streaming responses.
  • --attribute-co-authored-by option for commit message co-author trailers.
  • Automatic GitHub Copilot token refresh when used as OpenAI API keys.

Improved

  • Spinner animation updated to Knight Rider style.
  • Automatic commit messages now receive more context during generation.
  • OpenRouter token cost calculation for improved accuracy.
  • OpenRouter model metadata now uses local caching for increased reliability and performance.
  • Gemini model aliases updated to point to latest 05-06 preview versions.

Fixed

  • Files explicitly added via command line were incorrectly ignored if listed in .gitignore.
  • OpenRouter token cost calculation accuracy.

Summaries are written automatically from the official release notes (full changelog ↗); check the original notes before relying on a detail. Aider: pricing, features and alternatives · All changelogs