Key Takeaways
- Cursor 3 launched in April 2026 with a dedicated Agents Window that lets you run unlimited parallel AI agents, each in its own Git worktree, with cloud-to-local handoff support.
- Windsurf’s SWE-1.5 model scores 40.08% on SWE-bench while delivering up to 950 tokens per second, roughly 13 times faster than Claude Sonnet 4.5 at comparable accuracy.
- Cline passed 1.8 million VS Code installs by June 2025 and has since grown to nearly 5 million installs across the VS Code Marketplace and Open VSX Registry combined.
- Cursor costs $20/month (Pro) or $40/user/month (Teams). Windsurf costs $15/month (Pro) or $30/user/month (Teams). Cline itself is free; you pay only for API calls to your chosen model provider.
- Cursor’s June 2025 switch from per-request to credit-based pricing effectively cut Pro plan usage capacity by about 50% for heavy workflows, pushing many developers to explore alternatives.
- Windsurf was acquired by Cognition (makers of Devin AI) in July 2025 for approximately $250 million after Google hired away CEO Varun Mohan.
- Cline’s Plan and Act modes let you use different AI models for each phase: a reasoning-heavy model for planning and a faster, cheaper model for code execution.
- Windsurf offers broader compliance certifications (SOC 2, HIPAA, FedRAMP, ITAR) compared to Cursor, which currently holds SOC 2 only.
- Cursor crossed $1 billion in ARR by November 2025 and raised a $2.3 billion Series D at a $29.3 billion valuation, with roughly half of Fortune 500 companies using the product.
AI coding agents have moved from curiosity to daily infrastructure for professional developers. Three tools sit at the center of most comparisons right now: Cursor, Windsurf, and Cline. Each takes a fundamentally different approach to putting AI into your coding workflow, and the gap between them is wide enough to matter depending on how you work.
Cursor is a fully custom IDE built from the ground up for AI-assisted development. Windsurf is also a standalone IDE, acquired by Cognition in 2025, that ships its own proprietary Cascade agent and SWE-1 model family. Cline is an open-source VS Code extension that turns any model you already pay for into an autonomous coding agent inside your existing editor. None of these is a clear winner for every developer. The right pick depends on your codebase size, budget, preferred editor, and how much control you want over the AI’s behavior.
This article compares Cursor 3, Windsurf (with its SWE-1.5 model and multi-agent Wave 13 update), and Cline across pricing, features, performance, and fit. All pricing and feature data is sourced from official documentation and independent benchmarks published in 2025.
Quick Comparison: Cursor vs Windsurf vs Cline
| Feature | Cursor 3 | Windsurf | Cline |
|---|---|---|---|
| Type | Standalone AI IDE | Standalone AI IDE | VS Code extension |
| Free plan | Yes (limited) | Yes (25 credits/mo) | Yes (BYOK) |
| Pro price | $20/month | $15/month | Free (API costs only) |
| Teams price | $40/user/month | $30/user/month | $20/month (10 seats free) |
| Multi-agent | Yes (parallel, unlimited) | Yes (Wave 13) | No (single agent) |
| Own AI model | No (uses OpenAI, Anthropic, Google) | Yes (SWE-1, SWE-1.5) | No (BYOK) |
| Open source | No | No | Yes (Apache 2.0) |
| Compliance | SOC 2 | SOC 2, HIPAA, FedRAMP, ITAR | Depends on model provider |
| Best for | Power users, fast prototyping | Large codebases, enterprise | Budget-conscious, VS Code users |
What is Cursor?
Cursor is an AI-native IDE built by Anysphere and released as a fork of VS Code. It combines the familiar feel of VS Code with deep AI integration at every layer: tab completion, inline edits via Cmd+K, and a full agent mode that can write code, run terminal commands, install packages, and iterate until a task is done. Cursor is not a plugin for VS Code; it is a separate application that happens to share VS Code’s extension ecosystem.
Cursor 3, which launched on April 2, 2026, rebuilt the interface around the concept of parallel agents. The old Composer pane was replaced with an Agents Window, a full-screen workspace where you can run as many simultaneous AI agents as you want. Each agent operates in its own Git worktree, so they cannot overwrite each other’s work. Agents can start in the cloud and hand off to your local machine for review. The April 24, 2026 update added /multitask, which spawns async subagents to handle independent parts of a request at the same time.
By November 2025, Cursor had crossed $1 billion in ARR and raised a $2.3 billion Series D at a $29.3 billion valuation. Roughly half of Fortune 500 companies are using the product, with corporate buyers accounting for about 60% of revenue.
What is Windsurf?
Windsurf started as a product of Codeium, one of the first companies to offer free AI code completion at scale. It was originally known as the Windsurf Editor before the Codeium brand became secondary to the product name. In July 2025, Cognition (the company behind Devin AI) acquired Windsurf for approximately $250 million after Google hired away Codeium CEO Varun Mohan.
Windsurf’s defining feature is Cascade, an AI agent system that understands your entire codebase, suggests multi-file edits, runs terminal commands, and maintains context across long development sessions. Windsurf ships its own model family: SWE-1 and SWE-1.5. SWE-1.5 is a frontier-scale model with hundreds of billions of parameters that scores 40.08% on SWE-bench while delivering up to 950 tokens per second, roughly 13 times faster than Claude Sonnet 4.5 at a comparable accuracy level.
Wave 13 brought parallel multi-agent sessions to Windsurf, adding Git worktrees, side-by-side Cascade panes, and a dedicated terminal profile for more reliable agent execution. Windsurf also offers Cascade Hooks, which allow teams to set up SOC 2 audit logging, data sanitization, and policy enforcement for every AI interaction.
What is Cline?
Cline is an open-source AI coding agent distributed as a VS Code extension under the Apache 2.0 license. It was originally called “claude-dev” and later renamed Cline. Rather than bundling its own models, Cline works by connecting to model providers via API keys that you supply: Anthropic, OpenAI, Google, or any OpenAI-compatible endpoint. This means Cline itself is always free; your cost is whatever the model provider charges per token.
Cline’s most important design choice is its Plan and Act mode separation. In Plan mode, the AI reads your codebase and builds a step-by-step implementation plan without touching any files. In Act mode, it executes that plan with human approval at each step, showing diff previews before any file is changed. Crucially, you can use a different model for each mode: a reasoning-heavy model like Claude Opus or o3 for planning, and a faster, cheaper model for execution.
By June 2025, Cline had passed 1.8 million VS Code installs. That figure has since grown to nearly 5 million across the VS Code Marketplace and Open VSX Registry combined. Cline’s team features are free through Q1 2026, after which team plans cost $20/month with the first 10 seats always free.
Feature-by-Feature Breakdown
Agent Capabilities
Cursor 3’s Agents Window is the most sophisticated parallel execution environment of the three. You can run an unlimited number of agents simultaneously, each in its own Git worktree. Cloud agents can pick up tasks you start remotely and hand them off to local agents for review. The /multitask command spawns async subagents for independent subtasks within a single request. Design Mode lets you click browser elements directly to specify UI changes instead of describing them in text.
Windsurf’s Cascade agent operates in Write Mode and Chat Mode. Write Mode applies direct edits across files. Chat Mode lets you discuss and refine before anything changes. Cascade maintains checkpoints so you can track what changed and roll back if needed. Wave 13 added parallel Cascade panes, bringing multi-agent support to Windsurf, though the workflow is less deeply integrated than Cursor’s Agents Window.
Cline runs a single agent at a time, which is its main structural limitation compared to Cursor and Windsurf. What it trades for that is transparency: every step is shown, every file change requires approval, and the planning phase is fully separated from execution. For developers who want to stay in control and review every decision, this is a feature rather than a limitation.
Model Support
Cursor supports models from multiple providers: OpenAI (including GPT-5.4), Anthropic (Claude Opus 4.6, Claude Sonnet 4.6), and Google (Gemini). It does not ship its own model. Auto mode on paid plans selects the most appropriate model for each task automatically and is unlimited on all paid tiers since the June 2025 credit update.
Windsurf ships SWE-1 and SWE-1.5, proprietary models tuned specifically for software engineering tasks. SWE-1.5 achieves 40.08% on SWE-bench at 950 tokens per second, which is 6 times faster than Claude Haiku 4.5 and 13 times faster than Sonnet 4.5. You can also use third-party models via Cascade if you prefer.
Cline is model-agnostic by design. You bring your own API key and use any provider: Anthropic, OpenAI, Google, Mistral, or any OpenAI-compatible local model via Ollama or LM Studio. This means your model costs are at the provider’s raw API price, which is typically 3 to 5 times cheaper than the effective per-request cost embedded in Cursor’s credit system, according to developer comparisons on developer forums.
Codebase Context
Windsurf is consistently rated highest for large codebase handling. Its automatic indexing covers millions of lines of code without requiring you to manually specify files. Cascade builds context across the entire repository automatically, which makes it particularly strong for cross-module refactoring and consistency-sensitive changes.
Cursor requires you to use @mentions to add files to the agent’s context manually. This gives precise control but becomes tedious in codebases with hundreds of files. Cursor’s engineering team applied 20x scaled reinforcement learning to improve agent reliability and added self-summarization for maintaining context across long sessions, along with a reported 60% reduction in latency.
Cline reads and writes files across your entire project, asking for permission before any change. Its Plan mode reads the codebase to build context before touching anything, which is methodical and reliable, but single-threaded. For large projects requiring broad awareness, Windsurf’s automatic indexing has a structural advantage.
IDE Integration and Setup
Cursor requires installing a separate application. For developers already using VS Code, switching to Cursor means re-establishing extension settings, keybindings, and themes, though VS Code extensions generally work in Cursor since it shares the same extension API. Setup is straightforward for most users.
Windsurf is also a standalone IDE requiring a separate install. It has its own extension ecosystem, though VS Code extension compatibility is generally good. The UI has been described consistently as cleaner and more polished than Cursor’s, with a lower learning curve for new users.
Cline installs directly from the VS Code Marketplace in under a minute. There is no separate application, no new keybindings to learn, and no migration. If you already use VS Code, you can be up and running with Cline in the time it takes to enter an API key. This zero-friction setup is a significant practical advantage for developers who do not want to change their entire development environment.
Pricing in Practice
Cursor charges $20/month (Pro) or $40/user/month (Teams). The June 2025 switch to a credit-based system replaced unlimited requests with a monthly credit pool. Developers who relied on many daily agent runs reported that the effective usage cap dropped by roughly 50% compared to the previous model, which drove a measurable wave of migration to alternatives. Auto mode is technically unlimited on paid plans, but heavy usage on premium models still draws from the credit pool.
Windsurf charges $15/month for Pro (500 credits) or $30/user/month for Teams. Tab autocomplete is unlimited on all tiers including Free. A Max plan at $200/month targets power users who need higher credit volumes. Windsurf’s pricing has been more stable and predictable than Cursor’s, and the $5/month gap is a real differentiator for teams at scale. Students with .edu emails get over 50% off Pro.
Cline’s cost structure is the most transparent. The extension is free. You pay only what the model provider charges per token. A typical coding session costs $0.50 to $3.00 in API fees depending on model choice and session length, according to UI Bakery’s comparison. For developers who run many sessions per day, BYOK pricing can be 3 to 5 times cheaper than Cursor’s effective per-request cost. Team features ($20/month, first 10 seats free) add shared context and collaborative features.
Enterprise and Compliance
Windsurf holds the strongest compliance story of the three. It offers SOC 2, HIPAA, FedRAMP/DOD, ITAR, RBAC, and SCIM certifications. Cascade Hooks allow policy enforcement and audit logging at the AI interaction level, which is critical for regulated industries. Enterprise pricing is $60/user/month.
Cursor provides SOC 2 certification and offers an Enterprise plan with admin controls and centralized billing at $40/user/month. It does not match Windsurf’s breadth of compliance certifications, which matters for healthcare, defense, and government use cases.
Cline’s compliance posture depends entirely on the model provider you choose and how you configure your environment. Since it runs locally inside VS Code and your API keys go directly to the provider, you have full control over data routing. For teams with strict data residency requirements, a self-hosted model via Ollama through Cline can be fully air-gapped.
Who Should Use Which?
Choose Cursor if:
- You want the most advanced multi-agent execution environment available, with unlimited parallel agents, cloud-to-local handoff, and Design Mode for UI work.
- You work primarily on prototypes, isolated features, or API integrations where speed of iteration matters more than cross-file consistency.
- You are already on Cursor and the Agents Window’s new capabilities are valuable for your workflow.
- Your company is in the 60% of enterprise buyers where Cursor’s brand recognition and Fortune 500 presence matters for internal procurement.
Choose Windsurf if:
- You work on large, complex codebases where cross-module consistency and automatic context indexing are critical.
- You are in a regulated industry and need HIPAA, FedRAMP, or ITAR compliance baked into your AI coding tool.
- You want a polished, lower-friction IDE experience with a $5/month lower price than Cursor.
- You want to use Windsurf’s proprietary SWE-1.5 model, which delivers near-SOTA coding benchmark performance at extremely high generation speeds.
Choose Cline if:
- You do not want to leave VS Code and do not need a full standalone IDE switch.
- You want complete transparency and control over each step: every file change approved, every plan reviewed before execution.
- Budget is a priority. Raw API pricing through Cline is typically 3 to 5 times cheaper per session than the equivalent in Cursor credits.
- You want to mix and match models: one for planning, another for code generation, using whichever provider has the best price-performance at any given time.
- You work in an environment with strict data policies and want fully air-gapped operation via local models.
Verdict: Cursor 3 vs Windsurf vs Cline
For raw capability and the most advanced agentic interface, Cursor 3 leads. Its Agents Window, cloud agents, Git worktree isolation, and /multitask spawning put it ahead for developers who want maximum parallelism and automation depth. The price premium and credit-system friction are real costs, but the feature set is genuinely ahead of the competition for power users running complex, multi-step projects.
Windsurf is the better choice for teams working in large, established codebases, especially in regulated industries. The SWE-1.5 model’s speed advantage, automatic codebase indexing, and compliance certifications give it a structural edge that Cursor cannot match in those specific scenarios. At $15/month, it is also meaningfully cheaper.
Cline is the most cost-effective and flexible option for individual developers already living in VS Code. It does not try to replace your IDE or lock you into a model subscription. If you are comfortable managing API keys and want full visibility into every decision the agent makes, Cline delivers genuine agentic coding at a fraction of the cost of either IDE alternative. The limitation is the single-agent architecture and the lack of automatic codebase indexing, which matters more as projects grow.
There is no single winner. Developers who need parallel agents and fast prototyping should look at Cursor. Teams with large codebases and compliance requirements should evaluate Windsurf. Budget-conscious VS Code users who want control should start with Cline.
Frequently Asked Questions
Is Cursor 3 worth the $20/month price?
For developers who use AI agents heavily throughout the day, the value depends on how much you rely on parallel agents and Cursor’s newest features. The June 2025 credit system change reduced effective usage for heavy users by about 50%, which pushed many to look at Windsurf or Cline. If you use agent mode moderately and value a polished, feature-rich environment, $20/month is reasonable. Heavy users may find the credit limits frustrating without the Max plan.
What is the difference between Windsurf Cascade and Cursor’s agent mode?
Both systems let an AI agent edit files, run terminal commands, and iterate on tasks autonomously. Cascade uses Write Mode and Chat Mode with checkpoint tracking and Windsurf’s proprietary SWE-1.5 model. Cursor’s agent mode (now organized in the Agents Window) supports unlimited parallel agents in separate Git worktrees and cloud-to-local handoff, which Cascade gained more recently via Wave 13. Cascade has an advantage in automatic full-codebase indexing; Cursor requires manual @mentions to add context.
Is Cline actually free?
The Cline extension itself is free and open source under the Apache 2.0 license. You pay only for the AI model API calls you make. With Claude Sonnet 4.5 or GPT-4.1, a typical session costs $0.50 to $3.00. Team features are free through Q1 2026 and then $20/month with the first 10 seats always free. There is no subscription to Cline itself.
Which tool is best for large codebases?
Windsurf is widely considered the strongest for large, complex codebases. Its automatic indexing covers millions of lines of code without manual file selection, and Cascade maintains cross-module context naturally. Developer comparisons consistently rank Windsurf above Cursor for medium-to-large projects where cross-file consistency matters. Cursor is rated higher for speed on isolated changes in smaller scopes.
Can I use Cline with Claude or GPT-4?
Yes. Cline supports any model provider you connect via API key: Anthropic (Claude 3.5, Claude Opus, Claude Sonnet), OpenAI (GPT-4.1, GPT-4o), Google (Gemini 2.5), Mistral, and any OpenAI-compatible local model via Ollama or LM Studio. You can also use different models for Cline’s Plan mode and Act mode simultaneously, which lets you optimize for reasoning quality in planning and speed in execution.
Does Windsurf work with JetBrains IDEs?
Yes. Windsurf offers JetBrains plugin support, which you can track in their JetBrains changelog. This gives Windsurf broader IDE support than Cursor, which is a standalone VS Code-based application. For teams already using IntelliJ IDEA, WebStorm, or PyCharm, Windsurf’s plugin is a relevant option.
How does Cursor’s credit system work after June 2025?
Since June 2025, Cursor uses a monthly credit pool equal to your plan price. Pro users get a pool worth $20 in credits per month. Auto mode, which selects the model automatically, is unlimited on all paid plans. However, choosing specific premium models (like Claude Opus or GPT-5.4) draws from the credit pool and can be exhausted with heavy daily use. This change replaced the previous per-request system and effectively reduced usage capacity for high-volume users.
Which AI coding tool has the best SWE-bench score?
Among the three tools covered here, Windsurf’s SWE-1.5 model scores 40.08% on SWE-bench while delivering extremely high generation speed (950 tokens per second). Claude Sonnet 4.5, which Cursor and Cline can both access, scores 77.2% on SWE-bench Verified according to LLM Stats benchmarks, but at much slower generation speeds. SWE-bench scores measure different things depending on the variant (Verified vs. full vs. Pro), so direct comparisons require matching the exact benchmark configuration.
Is Cline open source? Can I self-host it?
Cline is fully open source under the Apache 2.0 license. The extension code is available on GitHub at github.com/cline/cline. You cannot self-host Cline as a server since it runs as a VS Code extension, but you can point it at self-hosted models via any OpenAI-compatible API endpoint, including Ollama running locally. This makes fully offline, air-gapped setups possible with the right model infrastructure.
Which is easier to set up for a beginner?
Windsurf is generally rated as having the most polished, beginner-friendly UI of the two standalone IDEs, with a cleaner interface and lower learning curve than Cursor. Cline has the lowest barrier to entry of all three: install the VS Code extension, enter an API key, and you are running. Cursor has the most features but also the steepest learning curve, particularly with the new Agents Window’s multi-agent coordination concepts.
The AI coding tool space is changing fast. Cursor, Windsurf, and Cline represent three distinct philosophies: maximum feature density, large-codebase intelligence, and open-source transparency. The right starting point is to match the tool’s strengths to your actual bottlenecks. If parallel agent execution is not something you need today, paying for it at Cursor’s Pro rate adds cost without proportional benefit. Windsurf’s free tier and Cline’s BYOK model both let you test the experience before committing to a paid plan.
