Which has better language support, aider or Windsurf?

aider language support: Partial. Windsurf language support: Not supported.

aider vs Windsurf: pricing and free tier side by side

✓ aider Checked 2026-08-22 · Windsurf Checked 2026-08-22

aider vs Windsurf

Q: Does aider or Windsurf have a free plan?

aider: 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. Windsurf: Light daily and weekly quotas, only some models available, with unlimited Tab autocomplete and inline editing (changed from a credit system to a quota system on 2026/3/19). Re-check on 2026-08-11 found that windsurf.com/pricing now permanently redirects to devin.ai/pricing, that the page is entirely Devin-branded and that the standalone Windsurf pricing page no longer exists (the brand has been folded into Devin). The plan figures here are still consistent with the new page and have not changed..

They also argued about these things on another page.

aider and Windsurf are both Coding tools. Pricing, free tiers and language support compared below.

aider

aider-ai

Has a free plan

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

Cheapest paid plan: 官方報價（洽詢）

Chinese support: Partial

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Windsurf

Has a free plan

Light daily and weekly quotas, only some models available, with unlimited Tab autocomplete and inline editing (changed from a credit system to a quota system on 2026/3/19). Re-check on 2026-08-11 found that windsurf.com/pricing now permanently redirects to devin.ai/pricing, that the page is entirely Devin-branded and that the standalone Windsurf pricing page no longer exists (the brand has been folded into Devin). The plan figures here are still consistent with the new page and have not changed.

Cheapest paid plan: US$20 / mo

Chinese support: Not supported

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Full paid plans compared

aider

Plan	Price	What you get
API cost (self-selected provider)	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)

Windsurf

Plan	Price	What you get
Pro	US$20 / mo	原為 US$15/月，2026/3/19 調漲
Max	US$200 / mo	New plan
Teams	US$40 / Person / mo（5 Person ≈ US$200/mo）	每席次/月，另加 US$80/月基本費，新增方案

Which one should you pick?

Both offer a free plan. Compare paid tiers against your needs.

aider has no public paid plan; Windsurf starts at about US$20 / 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 Windsurf?

Yes. Light daily and weekly quotas, only some models available, with unlimited Tab autocomplete and inline editing (changed from a credit system to a quota system on 2026/3/19). Re-check on 2026-08-11 found that windsurf.com/pricing now permanently redirects to devin.ai/pricing, that the page is entirely Devin-branded and that the standalone Windsurf pricing page no longer exists (the brand has been folded into Devin). The plan figures here are still consistent with the new page and have not changed.

How much does Windsurf cost?

The cheapest is the plan from Windsurf named Pro, at about US$20 / mo.

Does Windsurf support Chinese?

Windsurf has no Chinese interface at this time.

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