Release history

main branch

• Added support for Claude 4.5/4.6 models and updated model aliases (sonnet/haiku/opus).
• Expanded Gemini model support with 2.5 Flash and Flash‑Lite, added Gemini 3 preview models, and updated the flash alias to gemini/gemini-flash-latest.
• Added DeepSeek Reasoner model and updated DeepSeek model metadata with costs and prompt caching.
• Added BadGatewayError and ImageFetchError to handled exceptions.
• Fixed exception mapping to only include real exception classes, avoiding runtime errors, by Claudia Pellegrino.
• Repo map now tags Fortran, Haskell, Julia, and Zig and is compatible with newer tree-sitter Python APIs, by Varchas Gopalaswamy, Tim Put, and Mubashir Osmani.
• Removed deprecated google-generativeai dependency to eliminate import warnings, by Mark McDonald.
• Added settings for new OpenAI GPT‑5.1/5.2 and GPT‑5‑pro models across OpenAI, Azure, and OpenRouter, including chat and codex variants.
• Changed the gemini alias to point to gemini/gemini-3-pro-preview.
• Added support for OpenAI o1-pro model.
• Added support for GPT‑5.3/5.4 model variants across OpenAI, Azure, and OpenRouter, plus GPT‑4.1‑nano.
• Added /ok as a shortcut for asking aider to go ahead with the proposed changes, with optional extra instructions.
• When auto-commits are disabled, aider can add files outside the git repo and promote read-only files to editable, by Chris McCormick.
• Fixed crashes caused by circular symlink loops when resolving paths, by coder_3.
• Aider wrote 62% of the code in this release.

Aider v0.86.1

• Added a reasoning_effort setting for GPT-5 models and disabled temperature by default for the GPT-5 family.

Aider v0.86.0

• Expanded GPT-5 model support across family variants and providers (OpenAI, Azure, OpenRouter), including dated and chat/mini/nano variants.
• Aider wrote 88% of the code in this release.

Aider v0.85.5

• Enforced diff edit format for GPT-5 models.
• Added support for the reasoning_effort setting for GPT-5 models.
• Fixed model detection to correctly apply GPT-5 settings to versioned names (gpt-5 and gpt-5-2025-08-07).

Aider v0.85.4

• Added support for openai/gpt-5
• Fixed analytics to support the latest PostHog SDK event-capture API.
• Disabled temperature when using GPT-5 models for more deterministic outputs.

Aider v0.85.3

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

Aider v0.85.2

• 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.
• Fixed an issue where new settings for an existing model didn't replace the old ones, by Andrew Grigorev.
• Added support for openrouter/moonshotai/kimi-k2 model, by Jack Harrington.

Aider v0.85.1

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

Aider v0.85.0

• Support for Responses API models like o1-pro, o3-pro.
• Updated pricing for o3.
• 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.
• Added --add-gitignore-files flag to enable adding files listed in .gitignore to Aider's editing scope, by omarcinkonis.
• Added --commit-language option to specify the language for commit messages, by Kyosuke Takayama.
• Enhanced thinking tokens support: can now be disabled by setting to 0, and improved help text with examples.
• Added MATLAB language support for repository maps, by Matthew Tofano.
• Added support for OpenAI o3-pro model across multiple providers.
• Improved GitHub Copilot token handling with better validation and error messages, by Vincent Taverna and Sebastian Estrella.
• Fixed encoding issues in git diff output and LLM history logging.
• Enhanced commit message generation to use system prompt prefixes, by Luke Reeves.
• Improved inline code rendering in Rich markdown output, by Vamsi Talupula.
• Fixed Vertex AI model name prefixes in settings, by Wietse Venema.
• Improved /read-only command to resolve literal paths correctly, by Matteo Landi.
• Skip expensive file tracking operations when --skip-sanity-check-repo is enabled for better performance, by Makar Ivashko.
• Ensure pip is available before package installation.
• Auto-create parent directories for chat history files to prevent startup errors, by contributor.
• Fixed search block regex to accept optional closing tags when working with HTML content, by Mathis Beer.
• Co-authored-by attribution is now enabled by default for commit messages.
• Added Clojure language support for repository maps, by Garrett Hopper.
• Added custom PostHog analytics configuration options with --analytics-posthog-host and --analytics-posthog-project-api-key flags, by Vasil Markoukin.
• Optimized chat history summarization performance, by jayeshthk.
• Improved kebab-case identifier recognition in repository maps for better code analysis.
• Increased max tokens for Deepseek models to 65536 for better performance.
• Aider wrote 21% of the code in this release.

Aider v0.84.0

• 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.
• Fixed OpenRouter token cost calculation for improved accuracy.
• 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.
• Aider wrote 79% of the code in this release.

Aider v0.83.2

• Bumped configargparse to 1.7.1 as 1.7 was pulled.
• Added shell tab completion for file path arguments (by saviour) and for --edit-format/--editor-edit-format options.
• Improved OpenRouter model metadata handling by introducing a local cache, increasing reliability and performance.
• The /settings command now displays detailed metadata for active main, editor, and weak models.
• 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.

Aider v0.83.1

• Improved user language detection by correctly normalizing hyphenated language codes (e.g., en-US to en) and enhancing the validation of locale results.
• Prevented Aider from instructing the LLM to reply in 'C' or 'POSIX' when these are detected as the system locale.
• Displayed a spinner with the model name when generating commit messages.

Aider v0.83.0

• 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.
• Automatically fetch model parameters (context window, pricing) for OpenRouter models directly from their website, by Stefan Hladnik.
• Enabled support for thinking_tokens and reasoning_effort parameters for OpenRouter models.
• Improved cost calculation using litellm.completion_cost where available.
• Added model settings for openrouter/google/gemini-2.5-pro-preview-03-25.
• Added --disable-playwright flag to prevent Playwright installation prompts and usage, by Andrew Grigorev.
• The aider scrape command-line tool will now use Playwright for web scraping if it is available, by Jon Keys.
• Fixed linter command execution on Windows by adopting oslex for argument quoting, by Titusz Pan.
• Improved cross-platform display of shell commands by using oslex for robust argument quoting, by Titusz Pan.
• Improved /ask mode to instruct the LLM to elide unchanging code in its responses.
• Ensured web scraping in the GUI also respects Playwright availability and the --disable-playwright flag.
• Improved display of filenames in the prompt header using rich Text formatting.
• Enabled reasoning_effort for Gemini 2.5 Flash models.
• Added a --shell-completions argument to generate shell completion scripts (e.g., for bash, zsh).
• Explicit --attribute-author or --attribute-committer flags now override the default behavior when --attribute-co-authored-by is used, allowing finer control over commit attribution, by Andrew Grigorev.
• Fixed an issue where read-only status of files might not be preserved correctly by some commands (e.g. /drop after adding a read-only file).
• The aider-args utility (or python -m aider.args) now defaults to printing a sample YAML configuration if no arguments are provided.
• Displayed token count progress and the name of the file or identifier being processed during repo map updates.
• Extended the waiting spinner to also show for non-streaming responses and further enhanced its animation with console width clipping, cursor hiding, and a more continuous appearance.
• Dropped support for Python 3.9.
• Aider wrote 55% of the code in this release.

Aider v0.82.3

• 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).

Aider v0.82.2

• Fix editing shell files with diff-fenced, by zjy1412.
• Improve robustness of patch application by allowing multiple update/delete actions for the same file within a single response.
• Update prompts to instruct LLMs to consolidate all edits for a given file into a single block within the patch.

Aider v0.82.1

• Added support for o3 and o4-mini including provider-specific versions for OpenAI, OpenRouter, and Azure.
• Added support for Azure specific gpt-4.1 and gpt-4.1-mini models.
• Disabled streaming for o3 models since you need identity verification to stream.
• Fixed handling of file paths in unified diffs, especially those generated by git.

Aider v0.82.0

• Support for GPT 4.1, mini and nano.
• Added new patch edit format for OpenAI's GPT-4.1 model.
• Improved support for using architect mode with Gemini 2.5 Pro.
• Added new editor-diff, editor-whole, and editor-diff-fenced edit formats.
• Bugfix for automatically selecting the best edit format to use in architect mode.
• Added support for grok-3-fast-beta and grok-3-mini-fast-beta models.
• Aider wrote 92% of the code in this release.

Aider v0.81.3

• Commit messages generated by aider are no longer forced to be entirely lowercase, by Peter Hadlaw.
• Updated default settings for Grok models.

Aider v0.81.2

• Add support for xai/grok-3-beta, xai/grok-3-mini-beta, openrouter/x-ai/grok-3-beta, openrouter/x-ai/grok-3-mini-beta, and openrouter/openrouter/optimus-alpha models.
• Add alias "grok3" for xai/grok-3-beta.
• Add alias "optimus" for openrouter/openrouter/optimus-alpha.
• Fix URL extraction from error messages.
• Allow adding files by full path even if a file with the same basename is already in the chat.
• Fix quoting of values containing '#' in the sample aider.conf.yml.
• Add support for Fireworks AI model 'deepseek-v3-0324', by Felix Lisczyk.
• Commit messages generated by aider are now lowercase, by Anton Ödman.

Aider v0.81.1

• Added support for the gemini/gemini-2.5-pro-preview-03-25 model.
• Updated the gemini alias to point to gemini/gemini-2.5-pro-preview-03-25.
• Added the gemini-exp alias for gemini/gemini-2.5-pro-exp-03-25.

Aider v0.81.0

• Added support for the openrouter/openrouter/quasar-alpha model.
  • Run with aider --model quasar
• Offer OpenRouter OAuth authentication if an OpenRouter model is specified but the API key is missing.
• Prevent retrying API calls when the provider reports insufficient credits.
• Improve URL detection to exclude trailing double quotes.
• Aider wrote 86% of the code in this release.

Aider v0.80.4

• Bumped deps to pickup litellm change to properly display the root cause of OpenRouter "choices" errors.

Aider v0.80.3

• Improve error message for OpenRouter API connection issues to mention potential rate limiting or upstream provider issues.
• Configure weak models (gemini/gemini-2.0-flash and openrouter/google/gemini-2.0-flash-exp:free) for Gemini 2.5 Pro models.
• Add model metadata for openrouter/google/gemini-2.0-flash-exp:free.

Aider v0.80.2

• Bumped deps.

Aider v0.80.1

• Updated deps for yanked fsspec and aiohttp packages #3699
• Removed redundant dependency check during OpenRouter OAuth flow, by Claudia Pellegrino.

Aider v0.80.0

• OpenRouter OAuth integration:
  • Offer to OAuth against OpenRouter if no model and keys are provided.
  • Select OpenRouter default model based on free/paid tier status if OPENROUTER_API_KEY is set and no model is specified.
• Prioritize gemini/gemini-2.5-pro-exp-03-25 if GEMINI_API_KEY is set, and vertex_ai/gemini-2.5-pro-exp-03-25 if VERTEXAI_PROJECT is set, when no model is specified.
• Validate user-configured color settings on startup and warn/disable invalid ones.
• Warn at startup if --stream and `--ca