Quick Answer
Last verified:
High confidence

Aider costs Free to $100 per month as of March 2026 including a free tier. Plan: Free (Open Source) (free). Pricing depends on your chosen tier, contract length, and negotiated discounts.

Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.

  • Free tier: Yes

Aider offers 1 pricing tiers: Free (Open Source).

Compared to other ai coding assistants software, Aider is positioned at the mid-market price point.

  • 1 documented hidden costs beyond list price

How much does Aider cost?

Aider offers a free plan with 0 paid tiers from $Infinity to $100/month. Plans include Free (Open Source) (free).

Aider Pricing Overview

Aider has 1 pricing plans, including a free tier. Paid plans range from $0 to $100/month. The Free (Open Source) plan is free.

There are at least 1 documented hidden costs beyond Aider's list price, including implementation, training, and add-on fees.

This pricing was last verified in February 4, 2026 from 6 independent sources.

Aider is an AI pair programming tool that works directly in your terminal, allowing developers to collaborate with large language models to write and edit code in their local Git repositories. As a free, open-source solution, Aider stands out in the AI coding assistant market by eliminating subscription fees—developers only pay for the underlying AI model API usage they consume.

The tool integrates seamlessly with popular LLMs including Claude 3.7 Sonnet, DeepSeek R1, OpenAI o1, and GPT-4o, while also supporting local models through Ollama for completely free operation. Aider automatically commits changes with sensible commit messages, creates codebase maps for large projects, and can automatically lint and test code after each modification. With support for Python, JavaScript, Rust, Go, PHP, and dozens of other programming languages, Aider processes files for just $0.007 each and offers flexible pricing through multiple AI model options.

How Aider Pricing Compares

Compare Aider pricing against top alternatives in AI Coding Assistants.

All Aider Plans & Pricing

Plan Monthly Annual Best For
Free (Open Source) Free Custom
View all features by plan

Free (Open Source)

  • Open-source terminal tool
  • Works with all major LLMs
  • Git integration with auto-commits
  • Multi-language support (Python, JavaScript, Rust, Go, etc.)
  • Codebase mapping for large projects
  • Automatic linting and testing
  • Local model support via Ollama

Compare Aider vs Alternatives

Before committing to Aider, compare pricing with these 3 alternatives in the same category.

All Aider alternatives & migration guides

What Companies Actually Pay for Aider

Review scores

Aider Year 1 Total Cost by Company Size

Real deployment costs including licenses, implementation, training, and admin — not just the sticker price.

Casual Developer (Hobby Projects) $5 Year 1 total

Developer using Aider occasionally for small projects, 5-10 hours per week with DeepSeek or Gemini Flash models

Professional Developer (Daily Use) $50 Year 1 total

Full-time developer using Aider with Claude Sonnet for daily coding tasks, 40 hours per week on medium-sized codebases

Power User (Large Codebases) $100 Year 1 total

Heavy usage with Claude Opus or GPT-4 on enterprise-scale projects, extensive refactoring and feature development

Budget-Conscious Developer $0 Year 1 total
free with Ollama, minimal with DeepSeek
Total $0

Using Aider with local Ollama models for complete cost elimination, or DeepSeek for minimal API costs

Development Team (5 developers) $250 Year 1 total

Team of 5 developers each using Aider with Claude Sonnet for daily development work

Small Project (QR Code Generator) $1 Year 1 total

Single small project using Aider with API-based models

Premium Model Usage (o1-preview) $0 Year 1 total

Using high-end reasoning models through OpenRouter

How Aider Pricing Compares

Software Starting Price Top Price
Aider Free $100/month
Amazon Q Developer Free $19/user/month
Augment Code $20/month $200/month
Cline Free $20/month
Codeium Free $30/user/month
Continue Free $20/month

1 Aider Hidden Costs Beyond the List Price

Beyond the listed price, Aider has at least 1 documented hidden costs that can significantly increase total cost of ownership.

Watch for 1 hidden costs
  • AI Model API Usage Costs $1-$20 per project
    high 2 sources
    Reddit "Direct API model - the tool itself is free and open-source, but you pay directly for the API costs of whatever model you're using"
    Reddit "Can be expensive depending on the model used (e.g., using o1-preview through OpenRouter costs around 70 cents per command)"
    Hacker News "The QR code project I linked was made by Aider. Total cost was around $1 IIRC"
Tip

Ask your Aider sales rep about these costs upfront. Getting them in writing before signing can save you from surprise charges later.

Full hidden costs breakdown →

Intelligence sourced from 2 independent sources
Reddit User discussions Hacker News Tech community
Key claims include inline source attribution. Data verified against multiple independent sources. 3 source citations total.

Aider Pricing FAQ

01 Is Aider free?

Yes, Aider is completely free and open-source software. You can download and use it without any subscription fees. However, you will need to pay for the underlying AI model API usage when using cloud-based LLMs like Claude or GPT-4.

02 How much does Aider cost to use?

Aider itself costs $0, but you pay for API usage of your chosen AI model. Typical costs range from $10-50/month for casual developers to $50-200/month for power users. Using DeepSeek can reduce costs to around $5-20/month, while local models via Ollama are completely free.

03 What models does Aider support?

Aider works best with Claude 3.7 Sonnet, DeepSeek R1 & Chat V3, OpenAI o1, o3-mini & GPT-4o. It can connect to almost any LLM including local models through Ollama. You can easily switch between different models since you only pay for API calls.

04 How does Aider compare to Cursor?

Aider is open-source and free (pay only for API usage, typically $10-50/month), while Cursor charges $20/month for Pro. Aider is terminal-based and IDE-agnostic, while Cursor is an integrated IDE. Aider offers more flexibility and lower costs, while Cursor provides a more integrated development environment.

05 Can I use Aider without API costs?

Yes, you can run Aider with local models through Ollama, which eliminates API costs entirely. However, this requires local computing resources and the quality may vary compared to cloud-based models like Claude or GPT-4.

06 What are typical Aider API costs per month?

Most developers spend $10-50/month for light to moderate use. One developer reported spending around $10/month maximum when using Aider with Cursor Pro. Power users working on large codebases may spend $50-200/month. Using cost-optimized models like DeepSeek can reduce costs to $5-20/month.

07 Does Aider have a graphical user interface?

No, Aider is a command-line interface (CLI) tool. While this provides flexibility and you can run it inside VS Code, users who prefer graphical interfaces will miss the UI elements available in standalone AI IDEs like Cursor or Windsurf.

Is this pricing incorrect? — we verify and update within 24 hours.