release aidev SIG 3/5

Aider v0.84.0: Claude Sonnet 4 / Opus 4 support, sonnet and opus aliases repointed

Aider added Claude Sonnet 4 and Opus 4 support across providers and repointed the sonnet and opus aliases at those newer versions, so existing configs using the short aliases will now hit different models. Also adds a Vertex Gemini 2.5 Flash preview model, automatic GitHub Copilot token refresh, and a fix for .gitignored files added on the command line.

PUBLISHED2025-05-30
OBSERVED2026-08-11
AGE1y
SOURCES1
  • Claude Sonnet 4 and Opus 4 series supported across providers (claude-sonnet-4-20250514, claude-opus-4-20250514).
  • Default sonnet and opus aliases now resolve to those newer versions.
  • Added vertex_ai/gemini-2.5-flash-preview-05-20.
  • Onboarding OpenRouter defaults changed: deepseek/deepseek-r1:free (free tier), anthropic/claude-sonnet-4 (paid).
  • GitHub Copilot tokens auto-refresh when used as OpenAI API keys.
  • Fix: files passed on the command line were wrongly ignored if matched by .gitignore.
  • Fix: OpenRouter token cost calculation accuracy.
  • Local cache for OpenRouter model metadata.
  • Shell tab completion for file path arguments and --edit-format / --editor-edit-format.
  • /settings now prints metadata for the main, editor, and weak models.
  • Language detection normalises hyphenated locales (en-US to en); C / POSIX locales no longer passed to the LLM as a reply language.
  • Spinner shows the model name during commit message generation.
  • configargparse pinned to 1.7.1 (1.7 was pulled).
model-supportfeaturefix

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