Windsurf vs Cursor: which AI IDE should you use in 2026?

Windsurf and Cursor both promise the same thing: an editor where an AI agent does the typing while you steer. They've converged on nearly identical entry pricing and diverged hard on almost everything else, and the AI-editor market has moved fast enough this year that comparisons from even six months ago are already wrong in places. One thing trips people up right away: Windsurf isn't called Windsurf anymore, at least not officially. Here's where the two stand as of September 2026, what changed, and which one fits which kind of work.

Windsurf's new name is Devin Desktop

Cognition AI, which acquired Windsurf's remaining company, product, and brand in July 2025 after a chaotic bidding war involving OpenAI and Google, renamed the editor Devin Desktop on June 2, 2026. Cognition calls it "the next generation of Windsurf," built on the same IDE foundation but reorganized around an Agent Command Center that manages every agent, local and cloud, from one view instead of opening straight into a code editor. Cascade, the agent that did the coding inside Windsurf, became Devin Local: rewritten in Rust and, per Cognition, up to 30% more token-efficient than before.

None of that breaks anything that already worked. The update rolled out as a standard over-the-air push, and existing keybindings, extensions, and workflows carried over. windsurf.com still exists, it just forwards to Devin's own pricing and product pages now. This guide keeps using "Windsurf" throughout since that's still the term almost everyone searches for, but treat the two names as the same product going forward.

Pricing, plan by plan

Both editors landed on $20 a month as the price of admission for serious agent use, which is about the only thing they agree on. The rest of each ladder looks different.

Windsurf overhauled its own pricing on March 19, 2026, swapping a credit system for daily and weekly quotas that reset automatically instead of a pool you watch drain. Cursor kept its credit pool model, where Pro's monthly allowance runs out roughly in line with the $20 you paid for it, and heavier use either upgrades a tier or switches on pay-as-you-go billing at API rates. If Cursor's pool mechanics matter to your budget, the Cursor usage limits guide covers how that pool and its separate rate limit actually behave.

How the two agents actually work

Cognition built Windsurf's agent stack around speed. SWE-1.5, its in-house coding model, is tuned specifically for finding the right spot in a real codebase and making a precise edit rather than being a general chat model pressed into service, and Cognition's own benchmarks put it at roughly 13x faster generation than Claude Sonnet 4.5. Fast Context, its retrieval layer, claims a similar 10x speedup for pulling relevant code into context before the agent starts writing. Codemaps, Windsurf's other headline feature, has an agent explore a repository and generate an interactive, AI-annotated map of how the code connects, useful for onboarding onto a codebase you didn't write.

Cursor's approach centers on Composer, its own proprietary agent model, now on its second full release (Composer 2.5) with a third generation reportedly training on a large compute cluster as of mid-2026, though not yet shipped. Composer 2.5 runs with a 200,000-token working context window by default, and Cursor still gives you direct access to frontier models like Claude and GPT-series alongside its own, model by model, for whichever task needs which brain. If that context-window number needs unpacking, what a context window actually limits covers it.

Where each editor pulls ahead

Neither editor wins across the board, and the honest answer depends heavily on what your team already uses. Windsurf's case:

• Devin Local (formerly Cascade) runs as a plugin in more than 40 IDEs, JetBrains and Vim included, while Cursor stays a VS Code fork and only that
• A broader enterprise compliance checklist: Windsurf's own comparison page lists SOC 2, HIPAA, FedRAMP/DoD, and ITAR alongside RBAC and SCIM
• Codemaps, for onboarding onto a codebase you didn't write, with no equivalent visual feature on Cursor's side

Cursor's case:

• A longer track record and a much larger plugin and extension ecosystem, since it's a direct VS Code fork rather than a separate app
• A consistent, published context window (200K tokens on Composer 2.5), rather than one that shifts depending on which underlying model Cascade happens to be running
• A middle pricing tier, Pro+ at $60 a month, for people who outgrow Pro but don't need Ultra's full $200 allowance; Windsurf jumps straight from $20 to $200

BYOK, credit pools, and where a flat-rate API actually fits

Both tools let you bring an API key for certain models, but the two implementations aren't close to equivalent. Cursor's BYOK setup accepts a custom OpenAI-compatible base URL and key, a real door into routing part of your agent traffic somewhere other than Cursor's own metered pool. Windsurf's BYOK is narrower by design: it only accepts an Anthropic key, and only for specific named Claude Sonnet and Opus models, a workaround Cognition built after Anthropic restricted Windsurf's direct API access to those models in mid-2025. It isn't a general custom-endpoint feature, so there's no equivalent path to point Windsurf at a third-party inference service the way you can with Cursor.

That distinction matters if the real question is where the overflow work goes once a plan's pool runs dry. On the Cursor side, that custom-endpoint option is how a flat-rate service like NeverMetered fits in: point Cursor's custom model config at NeverMetered's OpenAI-compatible base URL for the routine share of agent work, tests, refactors, anything that doesn't need Composer or a frontier model reserved for the harder problem, and keep the Cursor credit pool for what actually needs it. The Cursor integration guide covers the setup. There's no honest version of that same pitch for Windsurf today, since its BYOK door only opens for Anthropic's own models.

Which one should you actually pick

If you're a solo developer who wants close control over diffs, a mature plugin ecosystem, and a middle-priced tier between $20 and $200, Cursor is still the safer default in September 2026. If your team already lives in JetBrains or Vim, needs FedRAMP- or HIPAA-level compliance, or would genuinely use a visual map of an unfamiliar codebase, Windsurf, now Devin Desktop, is worth the switch despite the new name. Plenty of teams end up running both, using whichever tool fits the task in front of them rather than picking one forever. If you're weighing a terminal-first agent instead of either IDE, Claude Code vs Cursor covers that different kind of comparison.