Aider v0.81.0: Quasar Model & OpenRouter Auth

TL;DR

• Quasar model now available on OpenRouter — free tier, 55% polyglot benchmark score
• OpenRouter OAuth flow added when API key is missing
• Better error handling for rate limits and insufficient credits

New

• Quasar model support — Added openrouter/openrouter/quasar-alpha model, currently free on OpenRouter with 55% polyglot coding benchmark score. Run with aider --model quasar.
• OpenRouter OAuth authentication — Automatically offer OAuth login if an OpenRouter model is specified but API key is missing.
• Gemini 2.0 Flash metadata — Added model metadata for openrouter/google/gemini-2.0-flash-exp:free and configured weak model settings for Gemini 2.5 Pro variants.

Fixed

• Prevent retrying API calls when provider reports insufficient credits — stops wasted requests.
• URL detection now excludes trailing double quotes — fixes parsing edge cases.
• OpenRouter error messages improved to mention potential rate limiting or upstream provider issues.
• Updated deps to fix yanked fsspec and aiohttp packages.
• Removed redundant dependency check during OpenRouter OAuth flow.

Update with: pip install --upgrade aider-ai

Source: Aider