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
5 build credits are issued per day, capped at 30 per month, plus 20 Cloud credits per month and 4 credits per month usable for in-app AI features (both the pricing-page FAQ and the official docs at docs.lovable.dev state this, giving two cross-checked sources). The point most easily misread: credits are not a number of chats. In Default mode credits are deducted by task complexity, and the official examples are 0.50 credits to make a button grey, 0.90 to remove the footer, 1.20 to add login authentication and 1.70 to build a landing page with images; Plan mode is a flat 1 credit per message. So how many instructions 5 daily credits buys varies. Credits expire: the free plan's daily allowance disappears if it is not used that day and does not accumulate, and the 30-per-month cap is hard. The free plan includes Git sync, an unlimited number of workspace members, projects private to the workspace, and community support. Code and AI output are owned by the user (official FAQ: You do. You own your code), and the site sets no commercial restriction on the free plan. (Verified 2026-08-09)
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)
Lovable
Plan
Price
What you get
Pro（100 credits）
US$25 / mo
Official docs list a monthly price of US$25/month; the same tier billed annually is US$250/year ≈ US$21/month.
US$100/month; US$1,000/year with annual billing = about US$84/month
Business（100 credits）
US$50 / mo
Starting at US$50/month, adds RBAC, SSO, priority support; annual billing US$500 = about US$42/month
Enterprise
官方報價（洽詢）
Custom pricing based on usage, not published on the official site
Which one should you pick?
Both offer a free plan. Compare paid tiers against your needs.
aider has no public paid plan; Lovable starts at about US$25 / mo.
FAQ
Is there a free version of aider?
Yes. 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
How much does aider cost?
The cheapest is the plan from aider named API cost (self-selected provider), at about 官方報價（洽詢）.
Does aider support Chinese?
aider only partially supports Chinese.
Is there a free version of Lovable?
Yes. 5 build credits are issued per day, capped at 30 per month, plus 20 Cloud credits per month and 4 credits per month usable for in-app AI features (both the pricing-page FAQ and the official docs at docs.lovable.dev state this, giving two cross-checked sources). The point most easily misread: credits are not a number of chats. In Default mode credits are deducted by task complexity, and the official examples are 0.50 credits to make a button grey, 0.90 to remove the footer, 1.20 to add login authentication and 1.70 to build a landing page with images; Plan mode is a flat 1 credit per message. So how many instructions 5 daily credits buys varies. Credits expire: the free plan's daily allowance disappears if it is not used that day and does not accumulate, and the 30-per-month cap is hard. The free plan includes Git sync, an unlimited number of workspace members, projects private to the workspace, and community support. Code and AI output are owned by the user (official FAQ: You do. You own your code), and the site sets no commercial restriction on the free plan. (Verified 2026-08-09)
How much does Lovable cost?
The cheapest is the plan from Lovable named Pro（100 credits）, at about US$25 / mo.
Does Lovable support Chinese?
Lovable has no Chinese interface at this time.
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