2026-08-14Local Claude parallel subagent re-check (read directly from the aider.chat official site, confirmed as a free tool where users pay their own API costs)
2026-08-09The official URL has been changed from the GitHub repository to the official website aider.chat. Three incorrect records of GitHub's Team (US$4) and Enterprise (US$21) plans have been removed, as aider is an open-source project under Apache 2.0 license and does not have a subscription model. Source: https://aider.chat/docs/faq.html
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2026-08-05 22:35:532026-08-05 22:35 Checked: Failed to read official website. Source=https://github.com/Aider-AI/aider
2026-08-03 03:34:37(GitHub open-source project, no paid pricing page) Official website cannot be found, keeping the original value.
2026-07-31(Official website github.com/Aider-AI/aider README directly WebFetch successful) Confirmed Apache 2.0 license, completely open-source and free, no official managed subscription plan, LLM API costs determined by users' chosen providers, no change.
2026-07-30(The official website github.com/Aider-AI/aider can be directly accessed via WebFetch) Confirmed that it is still completely open-sourced for free under Apache-2.0, with no self-hosted service or sponsorship pricing plan, local models are free, and API costs are still determined by the user's chosen LLM provider, which is consistent with the current record, and there are no changes.
2026-07-30(The official website github.com/Aider-AI/aider directly WebFetch was successful) Confirmed that it is still completely open-source and free under Apache-2.0, with no self-hosted paid plan, and the API cost is still determined by the user's chosen LLM provider, with no changes.
2026-07-30(Official website: github.com/Aider-AI/aider) Confirmed Apache 2.0 license, fully open-source and free. LLM API costs are determined by the user's chosen provider, with no changes.
2026-07-26Initial setup: The official website github.com/Aider-AI/aider and PyPI confirm that it is open-source and free under Apache 2.0; official documentation confirms support for 15+ LLM providers and local models; multiple 2026 reviews confirm monthly API costs of US$10-200+ depending on the provider and usage intensity
Continuously re-checked, every fact dated
Has a free plan
What Is This
Terminal AI pairing programming tool, prioritizing Git workflow, supporting 150+ programming languages and 15+ LLM providers (OpenAI/Anthropic/Google/DeepSeek/local models)
Free Version Limitations
Completely open-source and free (Apache 2.0), with no subscription model; uses local models (such as Ollama) at zero cost; API call fees depend on the chosen LLM provider
Available Models And Quantity
Model
Free quota
Calculate Time Window
Description
支援 15+ LLM 供應商
Unlimited
—
Free to use local models like Ollama, API call fees determined by the LLM provider chosen by the user
Free Usage Limit
Features
Free quota
Description
Coding completion
Available
Supported languages
150+ programming languages
Git integration
Available (Git prioritized workflow)
Each AI edit automatically becomes a visible commit
Local model support
Completely free
Using Ollama and other local models is free of cost
Quota Resets At
—
Terms Of Use
Open-source software, no registration required to use; CLI only; API costs determined by the LLM provider chosen by the user, with estimated light usage monthly costs around US$10-30 and heavy usage around US$50-200+
Free Version For Commercial Use
Yes
Common Pitfalls
The free version is limited to the tool itself, and API call costs vary depending on the chosen model, with mainstream models like OpenAI/Claude potentially incurring high monthly costs.
Best for: Already using aider, needing to upgrade to advanced models (such as Opus, GPT-4, etc.)
官方報價（洽詢）
Aider itself is free, the cost of LLM API is determined by the provider chosen by the user, usually ranging from US$10-30 per month (light usage) to US$50-200+ per month (heavy usage)
Which Model
Choose any LLM provider (OpenAI, Anthropic, DeepSeek, local Ollama, etc.)
Usage Quota
No official quota limit, costs are based on API usage
Max Reading Time
Depends on the selected model
This Plan Includes
The aider software itself is completely free.
Free choice of LLM provider and model
Local models (such as Ollama) can be used at no cost
Not Included
Official subscription plan (aider does not have)
What Sets Us Apart
There is no high or low plan, the difference lies in the chosen LLM: light usage (around 10 files/month) is approximately US$10-30/month, heavy usage (Opus/GPT-4) is approximately US$50-200+/month
Long-form writing and document quality are its strengths, with the paid version including the Claude Code engineering tool
FreeThe quota is calculated based on a rolling 5-hour usage window (not simply resetting at a fixed number every day), and general conversations can be used for around 10-20 times, excluding Claude Code.
AI code editors are a staple in the engineering community
FreeHobby: 2000 times of completion + 50 times of slow progress requests (confirmed on the official website on 2026-07-26, but the official website no longer lists these numbers in detail, only mentioning limited quota, and the specific numbers are now only seen in third-party community sources, keeping the record but adjusting the confidence level to medium)
The most popular AI completion tools have a hidden benefit of being free for students
FreeThe general user free tier includes 2,000 completions and 50 chats per month. Open-source maintainers and teachers can upgrade to Pro for free. The free student plan has reopened for new applications since 2026-06-17, after being suspended since 2026-04-20 for 58 days. As of 2026-07-27, the model selection for Free and Student plans has been limited to only Auto, and manual model specification is no longer available, while Pro and above plans are not affected.
