How much does Aider cost in 2026?

Quick Answer: Aider is free and Apache 2.0 licensed; users pay only for model API calls. Typical daily Claude or GPT-4 spend runs $3-$25/day for active developers in April 2026.

Aider Pricing in 2026

Aider itself is free under the Apache 2.0 license. There is no Aider subscription, no paid tier, and no commercial fork that gates features.

Cost Comes From Model Providers

Users connect their own API keys for the model provider of their choice: Anthropic, OpenAI, DeepSeek, Google Gemini, OpenRouter, or any OpenAI-compatible endpoint such as Ollama for local models.

Typical Daily Spend

For Claude Sonnet 4.7 at standard rates (April 2026): an active developer running multiple multi-file edits across a workday typically spends $5-$15/day, with heavy refactors scaling to $20-$25/day. GPT-4-class models are similar. DeepSeek-V3 reduces cost to $1-$3/day with some quality trade-off, and Ollama running Llama or Qwen locally is free at the cost of slower responses and a powerful local GPU.

Cost Controls

Aider supports the /tokens command to view current context cost, model switching mid-session, and a --model flag to default to cheaper models for routine tasks. The repo-map size can be tuned with --map-tokens to limit context spend on large repositories.

Comparison

Cursor Pro at $20/user/month and GitHub Copilot at $10-$19/user/month bundle model usage. Aider is cheaper for light users and competitive for heavy users on DeepSeek; Claude and GPT-4 heavy use can exceed flat-fee subscriptions.

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