Aider

• Added support for all GPT-5 models.

• Added support for Grok-4 via xai/grok-4 and openrouter/x-ai/grok-4 model names.

• Added support for gemini/gemini-2.5-flash-lite-preview-06-17 model, by Tamir Zahavi-Brunner.

• /clear now prints “All chat history cleared.” so you know it worked, by Zexin Yuan.

• /undo output now shows only the first line of each commit message, making it easier to read.

• Added support for openrouter/moonshotai/kimi-k2 model, by Jack Harrington.

• Display model announcements with no-arg /model command.

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

• Fixed analytics to support the latest PostHog SDK event-capture API.

• Bumped dependencies to pick up latest litellm==1.75.0.

• Aider wrote 88% of the code in this release.

New Models

• Added support for new Gemini models including gemini-2.5-pro, gemini-2.5-flash, and gemini-2.5-pro-preview-06-05 with thinking tokens support.
• Updated model aliases: flash now points to gemini-2.5-flash and gemini now points to gemini-2.5-pro.
• Support for Responses API models like o1-pro, o3-pro.
• Added support for OpenAI o3-pro model across multiple providers.
• Enhanced thinking tokens support: can now be disabled by setting to 0, and improved help text with examples.
• Increased max tokens for Deepseek models to 65536 for better performance.
• Updated pricing for o3.

New Features & Enhancements

• Added --add-gitignore-files flag to enable adding files listed in .gitignore to Aider's editing scope, by omarcinkonis.
• Co-authored-by attribution is now enabled by default for commit messages.
• Enhanced commit message generation to use system prompt prefixes, by Luke Reeves.
• Added --commit-language option to specify the language for commit messages, by Kyosuke Takayama.
• Skip expensive file tracking operations when --skip-sanity-check-repo is enabled for better performance, by Makar Ivashko.

Model support & provider updates

• Added support for new Claude models including the Sonnet 4 and Opus 4 series (e.g., claude-sonnet-4-20250514, claude-opus-4-20250514) across various providers. The default sonnet and opus aliases were updated to these newer versions.
• Added support for the vertex_ai/gemini-2.5-flash-preview-05-20 model.
• Updated default OpenRouter models during onboarding to deepseek/deepseek-r1:free for the free tier and anthropic/claude-sonnet-4 for paid tiers.
• Automatically refresh GitHub Copilot tokens when used as OpenAI API keys, by Lih Chen.

Core functionality improvements

• Fixed an issue where files explicitly added via the command line were not correctly ignored if listed in .gitignore.
• Improved automatic commit messages by providing more context during their generation, by wangboxue.
• Fixed OpenRouter token cost calculation for improved accuracy.

Quality of life improvements

• Improved OpenRouter model metadata handling by introducing a local cache, increasing reliability and performance.
• Added shell tab completion for file path arguments (by saviour) and for --edit-format/--editor-edit-format options.

• Added support for gemini-2.5-pro-preview-05-06 models.
• Added support for qwen3-235b models.
• Added repo-map support for OCaml and OCaml interface files, by Andrey Popp.
• Added a spinner animation while waiting for the LLM to start streaming its response.
• Updated the spinner animation to a Knight Rider style.
• Introduced --attribute-co-authored-by option to add co-author trailer to commit messages, by Andrew Grigorev.
• Updated Gemini model aliases (e.g., gemini, gemini-2.5-pro) to point to the 05-06 preview versions.
• Marked Gemini 2.5 Pro preview models as overeager by default.
• Commit message prompt specifies the user's language.
• Updated the default weak model for Gemini 2.5 Pro models to gemini/gemini-2.5-flash-preview-04-17.
• Corrected gemini-2.5-pro-exp-03-25 model settings to reflect its lack of support for thinking_budget.
• Ensured model-specific system prompt prefixes are placed on a new line before the main system prompt.
• Added tracking of total tokens sent and received, now included in benchmark statistics.

• Add support for gemini-2.5-flash-preview-04-17 models.
• Improved robustness of edit block parsing when filenames start with backticks or fences.
• Add new udiff-simple edit format, for Gemini 2.5 Pro.
• Update default weak/editor models for Gemini 2.5 Pro models to use gemini-2.5-flash-preview-04-17.
• Instruct models to reply in the user's detected system language.
• Fix parsing of diffs for newly created files (--- /dev/null).
• Add markdown syntax highlighting support when editing multi-line commit messages via /commit, by Kay Gosho.
• Set Gemini 2.5 Pro models to use the overeager prompt setting by default.
• Add common file types (.svg, .pdf) to the default list of ignored files for AI comment scanning (--watch).
• Skip scanning files larger than 1MB for AI comments (--watch).