Originally published May 2025. Fully updated March 2026 with current pricing, the complete Windsurf acquisition saga (OpenAI → Google → Cognition), and Cursor's $29.3B valuation.
The AI Coding Revolution Is Here — And It Just Got Complicated
If you've been building anything in tech lately, you already know: AI coding assistants aren't the future anymore. They're the present, the default, and increasingly the only way serious founders ship fast.
Two names still dominate the conversation: Cursor (now valued at $29.3B after its 2025 Series D, reportedly approaching $1B in annualised revenue) and Windsurf — which has been through more ownership drama in the past twelve months than most startups see in a decade.
Before we get into the actual comparison, you need to understand what happened to Windsurf.
Because it changes how you should think about choosing it.
The Windsurf Saga: OpenAI, Google, and Cognition
The short version: Windsurf was almost acquired by OpenAI for $3 billion. Then that deal collapsed. Then Google swooped in and poached the CEO and co-founders in a $2.4B licensing deal. Then Cognition (the startup behind the Devin autonomous coding agent) stepped in and bought everything that was left.
Here's the full timeline, because it matters for the "should I use Windsurf" question:
April 2025: OpenAI enters exclusivity to acquire Windsurf for ~$3B. At the time, Windsurf had ~$82M ARR with enterprise revenue doubling quarter-over-quarter. It looked like a done deal.
July 11, 2025: The OpenAI deal collapses. Microsoft — OpenAI's largest backer — reportedly blocked it over IP rights concerns: any Windsurf technology acquired by OpenAI would, under existing agreements, also become accessible to Microsoft. OpenAI, building a competitor to GitHub Copilot, wasn't willing to hand that over.
Same day: Google DeepMind announces it has hired Windsurf CEO Varun Mohan, co-founder Douglas Chen, and key R&D staff — paying $2.4B in licensing fees and compensation packages. Demis Hassabis publicly welcomes them to help "turbocharge Gemini efforts on coding agents."
July 14, 2025: Cognition (makers of Devin) announces it has signed a definitive agreement to acquire the rest of Windsurf: its product, brand, IP, and remaining team, for a reported ~$250M. Jeff Wang steps up as interim CEO. All Windsurf employees are made whole financially.
Early 2026: Windsurf continues shipping under Cognition ownership. Wave 13 drops with multi-agent sessions, Git worktrees, and SWE-grep for fast context retrieval. The Windsurf brand stays intact.
So when we say "Windsurf" in this article, we mean: a product still very much alive, still being actively developed, owned by Cognition, with Google holding a separate technology licence, and its founding team now working on Gemini. It's a lot.
And it's a genuine factor in your tooling decision.
What Makes an AI Code Editor Great?
Before the side-by-side, it's worth being clear about what these tools are actually doing. Both Cursor and Windsurf are VS Code forks. They enhance it with:
- AI agents that understand complex, multi-file coding tasks
- Inline editing and suggestions that work inside your existing flow
- Rules and memory systems that adapt to your codebase and style
- Model flexibility — both support Claude, GPT-4o, Gemini, and their own in-house models
The question isn't whether these tools work. They do, and remarkably well. The question is which one implements these features in the most useful, cost-effective, and — given what's happened to Windsurf — stable way.
User Experience: First Impressions Still Matter
Windsurf's UX advantage held up through the acquisition. It still feels like the more considered product:
- Project generation: Windsurf lets you jump straight into vibe coding from a "Generate project" prompt — no manual folder setup required
- File selection: When adding files as context for your agent, Windsurf's selector is more intuitive and less prone to misfires
- Built-in browser: Windsurf includes a web preview with an element inspector that connects directly to the Cascade agent — genuinely useful for frontend iteration
- Memories system: Cascade builds persistent knowledge of your codebase over time, so it gets better the longer you use it on the same project
Cursor isn't bad on UX. It's clean, functional, and familiar if you're already in VS Code. But it's been more focused on capability and speed than polish.
The Agents: Where the Real Work Happens
The agent is the engine of both tools. It's what takes your high-level prompt and turns it into actual working code across multiple files.
Cursor's Agent:
- Handles long, complex tasks without interrupting you for confirmation
- Consistently faster — in testing, 25–40% quicker on comparable tasks
- "Ask" mode lets you query the codebase without launching a full agent session
- Cloud Agents (Pro and above) run background tasks while you keep working
Windsurf's Cascade:
- Flow Awareness gives it broader project-level context — it understands why you're making a change, not just what to change
- More intuitive terminal integration
- Better model selection UI that shows credit costs before you commit
- Turbo Mode lets it execute terminal commands autonomously without asking permission
- Multi-agent sessions landed in Wave 13 (early 2026)
Pricing: Both Tools Got More Complicated in 2025
This is where things got messy for both sides.
Cursor Pricing (current)
In June 2025, Cursor replaced its simple "500 fast requests per month" model with a credit-based system tied to actual API costs. The backlash was significant enough that Cursor issued a public apology and offered refunds. They've since refined it, but it's more complex than it used to be.
Here's how it works now: every paid plan includes a credit pool equal to the monthly subscription cost. Auto mode — where Cursor picks the most cost-efficient model automatically — is effectively unlimited. The credits only get consumed when you manually select premium models like Claude Sonnet or GPT-4o.
Cursor plans:
- Hobby (Free): Limited Agent requests and Tab completions — enough to evaluate, not enough for daily use
- Pro: $20/month — unlimited Tab completions, $20 credit pool for premium model usage, Cloud Agents
- Pro+: $60/month — everything in Pro, 3× the usage credits
- Ultra: $200/month — 20× usage credits, for teams running agents all day on large codebases
- Teams: $40/user/month — collaboration features, admin controls, usage visibility
- Enterprise: Custom
Annual billing saves 20% across all paid tiers.
The key nuance: if you stay in Auto mode and use Tab completions for most work, Pro is effectively unlimited. You only feel the credit squeeze when you're manually reaching for the most expensive frontier models on heavy tasks. Based on median usage, the $20 Pro plan covers roughly 225 Claude Sonnet requests or 650 GPT-4.1 requests per month before credits run out.
For deeper detail on Cursor's plans, see our Cursor Pricing 2026 guide.
Windsurf Pricing (current)
Windsurf also moved to a credit-based model, but structured it differently. They use two credit types: their own in-house SWE-1 model costs a fixed amount per interaction; third-party models like Claude Sonnet are billed based on token usage.
Tab completions are unlimited on all plans — credits only kick in for Cascade agent sessions and Chat.
Windsurf plans:
- Free: 25 prompt credits/month + unlimited Tab completions — roughly 3–5 meaningful Cascade sessions
- Pro: $15/month — 500 prompt credits, full model access including SWE-1
- Teams: $30/user/month — 500 credits per user, admin controls, centralized billing
- Enterprise: $60/user/month — zero data retention, SSO, RBAC, compliance features
- Add-on credits: $10 for 250 credits (available on any plan)
On paper, Windsurf wins on price: $15/month individual vs Cursor's $20, and $30/user vs $40 for teams. That's a meaningful gap, especially at team scale.
The Ownership Question: Does It Matter?
This is the part most comparison articles skip, and it shouldn't be.
Windsurf's roadmap now depends on how Cognition integrates it with Devin. The stated plan is to combine Windsurf's IDE with Devin's autonomous agent capabilities — potentially creating the first fully AI-driven development environment. That's an ambitious and genuinely exciting vision.
But it also means the Windsurf you use today may look quite different in 12–18 months. Will it remain a standalone IDE? Will the free tier survive? Will pricing change as Cognition seeks returns on its acquisition? These aren't hypothetical concerns, they're live questions without clear answers.
Cursor, by contrast, is an independent company with $29.3B valuation, $1B+ in ARR, and a clear identity as an AI IDE. Its pricing got messy in 2025, but the product direction is stable.
If you're building personal workflows, integrating Windsurf into team tooling, or making architectural decisions around your development environment, the ownership situation is worth factoring in.
Building Actual Things: Real-World Results
Theory is nice. Here's what actually happened when testing both tools over two weeks of real project work:
Web game build: Cursor finished first — had a working prototype ready before Windsurf's Cascade had completed its first pass. The speed gap was real and consistent.
SaaS dashboard: More even. Windsurf's Flow Awareness showed here — it asked fewer clarifying questions and made more sensible architectural choices independently. Cursor was faster but required more steering.
Feature addition to existing codebase: Windsurf's Memories system was the differentiator. Having built up context about the project over previous sessions, Cascade made suggestions that felt genuinely informed by how the codebase was structured. Cursor's context awareness was good but started fresh each session.
Code quality overall: Remarkably similar across both tools when using the same underlying models. The real differences were in speed, UX, and how much hand-holding each agent needed.
The Verdict: The "Use Both" Case Is Still Strong
After testing both tools extensively, the honest answer is still: serious founders should use both.
Here's the practical case:
- Credit management: Both tools have monthly credit limits. When one runs dry, switch to the other — you're not losing work, just rotating environments
- Task specialisation: Use Cursor when speed is everything and you need to iterate fast. Use Windsurf when you're working on a complex feature where project context matters and Cascade's memory is worth the slower pace
- Multitasking: Start a long Cascade session in Windsurf, keep working in Cursor while it runs
- Cost hedging: At $15 + $20 = $35/month for both Pro plans, you get redundancy and flexibility for less than a Pro+ Cursor subscription alone
If you genuinely can only choose one:
Choose Cursor if: Speed is your priority, you prefer a more predictable independent product, and you're comfortable with the credit system's variability for heavy premium model use.
Choose Windsurf if: You value UX polish, want cheaper pricing at individual and team level, and the Cognition acquisition uncertainty doesn't put you off — especially if you're already using Devin and want those tools to eventually converge.
The Bigger Picture
The most important thing this comparison reveals isn't which editor is marginally better. It's that AI-assisted development has become a genuine competitive advantage for founders — especially those without deep engineering backgrounds.
Tasks that required a dedicated engineering team eighteen months ago can now be shipped solo with the right prompts and a bit of patience. Cursor and Windsurf are both excellent tools that will make you faster. The choice between them is, in most cases, less important than simply picking one and building.
But if you're going to go deep on one: watch what Cognition does with Windsurf over the next six months. If the integration with Devin ships well, it could become something genuinely different from anything else on the market. And if it doesn't — Cursor will still be there, fast and getting faster.
