Aider

AI pair programming in your terminal. Supports many models via API.

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AI Models Available in Aider

Here are the top AI models you can use with Aider, ranked by cost-effectiveness.

Claude Sonnet 4

Anthropic

Anthropic's balanced model for coding and general tasks. Best price-performance ratio in the Claude family.

$3.00/M input $15.00/M output ~$4.66 per medium feature

Claude Opus 4

Anthropic

Anthropic's most powerful model. Best for complex reasoning and challenging coding tasks.

$15.00/M input $75.00/M output ~$23.29 per medium feature

Claude 3.5 Sonnet

Anthropic

Previous generation Sonnet. Still excellent for coding tasks at the same price point.

$3.00/M input $15.00/M output ~$4.66 per medium feature

Claude 3.5 Haiku

Anthropic

Fast, cost-effective model for high-volume tasks. Great for code review and simple queries.

$0.800/M input $4.00/M output ~$1.24 per medium feature

Claude 3 Opus

Anthropic

First generation Opus. Highest reasoning capability in the Claude 3 family.

$15.00/M input $75.00/M output ~$20.25 per medium feature

Claude 3 Sonnet

Anthropic

First generation Sonnet. Balanced performance for general tasks.

$3.00/M input $15.00/M output ~$4.05 per medium feature

Claude 3 Haiku

Anthropic

Cheapest Claude model. Fast responses for simple tasks and basic coding.

$0.250/M input $1.25/M output ~$0.34 per medium feature

GPT-4o

OpenAI

OpenAI's flagship multimodal model. Strong coding and reasoning at competitive pricing.

$2.50/M input $10.00/M output ~$3.06 per medium feature

GPT-4o mini

OpenAI

Affordable small model. Fast and cost-effective for high-volume coding tasks.

$0.150/M input $0.600/M output ~$0.18 per medium feature

GPT-4 Turbo

OpenAI

Previous generation high-performance model. Good for complex reasoning tasks.

$10.00/M input $30.00/M output ~$9.50 per medium feature