Cursor vs Windsurf: Which AI Coding IDE Should You Use in 2025?
Side-by-side comparison of pricing, AI models, autocomplete quality, and reliability — with live uptime data for both tools so you can make a decision backed by real availability, not just feature lists.
Quick comparison
| Feature | Cursor | Windsurf |
|---|---|---|
| Base price | Free / $20 Pro / $40 Business | Free / $15 Pro |
| AI models | GPT-4o, Claude Sonnet, custom | GPT-4o, Claude Sonnet (Cascade) |
| Editor base | VS Code fork | VS Code fork |
| Autocomplete | Tab — next edit prediction | Supercomplete (multi-line aware) |
| Agent mode | Composer agent | Cascade (agentic) |
| Free tier | 2k completions/mo, 50 slow requests | Unlimited completions, 5 fast requests/day |
Pricing
Cursor pricing
Cursor's free tier includes 2,000 completions per month and 50 slow AI requests — enough to evaluate the tool but limiting for daily professional use. Pro at $20/month unlocks 500 fast requests, Claude Sonnet access, and unlimited slow requests. Business at $40/month adds SSO, usage enforcement, and admin controls for teams.
The key constraint on the free tier is the 2,000 completion cap — heavy users will hit it within a week. The 50 slow requests are Cursor's way of rate-limiting AI chat on the free plan without fully blocking access.
Windsurf pricing
Windsurf's free tier is more generous for completions — unlimited autocomplete with no monthly cap. The constraint is 5 fast AI chat (Cascade flow) requests per day. For developers who rely primarily on inline completions and use AI chat sparingly, this is actually a strong free offering.
Pro at $15/month removes the daily fast-request cap and is $5 cheaper than Cursor Pro. If price is a deciding factor, Windsurf Pro has the edge.
AI chat & agent quality
Both Cursor and Windsurf use the same underlying AI models — Anthropic Claude Sonnet and OpenAI GPT-4o — so raw model capability is not a differentiator. The difference lies in how each tool wraps those models into an agentic workflow.
Cursor Composer is the multi-file agent mode. You describe a task, Composer plans the edits across files, runs terminal commands, and iterates. It has been available longer and has a larger user base providing feedback, which has shaped its reliability.
Windsurf Cascade is the equivalent agentic mode with a stated emphasis on "deep context awareness" — the ability to hold a mental model of a large codebase and reason about how changes in one file affect others. In practice, for monorepos or projects with deeply nested dependencies, Cascade often produces more coherent multi-file refactors because it considers more context before making edits.
For new projects or smaller codebases, both agents perform comparably. For large established codebases, Cascade's context handling gives Windsurf a noticeable edge in agent quality.
Autocomplete
Cursor Tab predicts the next logical edit — not just the next token. It can skip over lines to suggest an edit two lines below the cursor, or fill in the rest of a function body from partial context. This "next edit prediction" paradigm is more useful than traditional token-by-token completion.
Windsurf Supercomplete works similarly — multi-line, context-aware, capable of filling entire blocks. The implementation is comparable in capability and the UX feels similar in daily use.
In practice, autocomplete quality is not a meaningful differentiator between the two editors. The more important practical difference is the free tier: Windsurf offers unlimited completions while Cursor caps free users at 2,000 per month. If you rely heavily on autocomplete and don't want to pay, Windsurf has a clear advantage.
Reliability & uptime
Both Cursor and Windsurf route AI requests through external model providers (Anthropic, OpenAI) and have their own backend infrastructure for completions. This means outages can originate at the tool level, the model provider level, or both.
When Cursor has a backend incident, completions and chat stop working — even if the underlying Claude or GPT-4o APIs are healthy. The same is true for Windsurf. These incidents typically last 15–90 minutes and happen a few times per month for each tool.
Tracking uptime over time gives you real data on which tool is more reliable for your use case. Sign up at prismix.dev to receive email alerts the moment either tool has an outage — so you can switch editors or take a break rather than debugging your own code for a problem that isn't there.
Who should use which
Use Cursor if…
- You want the most-established ecosystem with the largest community
- VS Code extension parity and compatibility matters to your workflow
- You run heavy AI agent workflows and want the most-iterated Composer experience
- Your team uses Business features like SSO or usage enforcement
- You're already on a Pro plan and switching has a switching cost
Use Windsurf if…
- You're on a tight budget — unlimited completions free, Pro $5 cheaper
- You work in large codebases and want Cascade's deep context awareness
- You're new to AI editors and want the most generous free tier to explore
- You primarily use autocomplete rather than AI chat (unlimited vs 2k cap)
- You want to try a strong alternative if Cursor has an outage
Get alerts when Cursor or Windsurf goes down
Free email alerts with uptime data for both tools — make decisions backed by real reliability data, not just feature lists.
FAQ
Is Cursor or Windsurf better?
Both are excellent. Cursor has a more mature ecosystem and is the safe default for teams with existing tooling. Windsurf's free tier is significantly more generous (unlimited completions vs 2,000/month), and Cascade's deep context awareness gives it an edge in large codebases. For new individual developers, Windsurf's free tier makes it easier to get started without committing to a paid plan.
Can I use both Cursor and Windsurf?
Yes — both are standalone IDE applications that can be installed side by side. Many developers keep both installed and switch between them depending on the project type or when one tool has an outage. There's no technical conflict between having both on the same machine.
Is Windsurf free?
Yes. Windsurf's free tier includes unlimited completions — no monthly cap. The limitation is 5 fast Cascade (AI chat) requests per day. For heavy AI chat use, Pro at $15/month removes the daily fast-request limit.
Does Cursor support Claude?
Yes. Cursor Pro includes Claude Sonnet via Anthropic's API as one of the selectable AI models alongside GPT-4o. You can also add your own Anthropic API key in Cursor settings to use Claude with your own billing, which may be cost-effective if you have existing Anthropic credits.