Cursor vs Claude Code: which to use and how they differ

Cursor is an AI code editor built on VS Code, with its own agent and models from several labs, and it suits developers who want to stay in an editor with AI autocomplete. Claude Code is Anthropic's coding agent, with a full-featured CLI plus versions for IDEs, a desktop app and the browser, and it suits developers who hand whole tasks to an agent. Claude Code runs on Claude models, while Cursor offers models from Anthropic, OpenAI, Google and SpaceXAI. The two tools also work together, since Claude Code's VS Code extension installs in Cursor and its CLI runs in Cursor's terminal.

Product facts below come from each vendor's docs and pricing pages as of October 13, 2026. The usage data comes from Bug Bench, cubic's public benchmark of AI-written code. For more agents side by side, see our guide to the best AI coding tools and agents, with Bug Bench data.

Cursor vs Claude Code at a glance

What Cursor is now

Cursor is a desktop editor for macOS, Windows and Linux. It is "based upon the VS Code codebase" and imports your VS Code settings, keybindings and extensions. On top of the editor:

• Agent: a side panel that searches code and the web, edits files, runs commands, drives a browser and saves checkpoints you can restore.

• Tab: autocomplete that suggests multi-line edits and predicts edits in other files.

• Agents Window: an agent-first view, shipped with Cursor 3 in April 2026, for running parallel agents locally or in the cloud.

• CLI: agent for interactive sessions, agent -p for scripts and CI.

• Cloud agents: agents in isolated cloud VMs, started from the desktop app, the web, the iOS app, Slack, GitHub, Linear or an API.

• JetBrains: Cursor's agent runs in JetBrains IDEs through the Agent Client Protocol, on a paid plan.

Cursor announced in August 2026 that it is now part of SpaceX.

What Claude Code is now

Anthropic describes Claude Code as "an agentic coding tool that reads your codebase, edits files, runs commands, and integrates with your development tools." You give it a task, and it gathers context, makes changes and checks its work in a loop you can interrupt.

It runs on surfaces that share one engine:

• CLI: claude, with the full feature set. Scripting and the Agent SDK are CLI-only.

• IDE extensions: a VS Code extension with inline diffs and plan review (its docs include an "Install for Cursor" link), and a JetBrains plugin that uses the CLI.

• Desktop app: the Code tab in the Claude app for macOS and Windows, with Linux in beta.

• Web and mobile: cloud sessions at claude.ai/code and in the Claude iOS and Android apps, on Pro, Max, Team and some Enterprise seats.

Claude Code works through prompts and explicit edits, and its desktop docs note that the app "doesn't offer autocomplete-style code completions."

Models

Cursor offers Claude, GPT, Gemini, Grok, Composer and other model families, and its models and pricing page has the current list. Auto lets Cursor pick the model, and on Teams and Enterprise plans, Cursor Router can route each request by task type and complexity.

Claude Code runs Claude models. On Anthropic's API, the fable, opus and sonnet aliases point to Fable 5.1, Opus 5.5 and Sonnet 5.5, and /model switches between them (model configuration). Anthropic calls the Fable models "the most capable models in Claude Code," and depending on your plan and seat, Fable usage can bill to usage credits. You can also run Claude Code through Amazon Bedrock, Google Cloud's Agent Platform or Microsoft Foundry.

Both give you Claude. For GPT, Gemini or Grok in the same tool, you need Cursor.

How each finds context in your codebase

Cursor's agent uses Instant Grep, which builds its index on your machine. Cursor says it "does not upload file paths or code to build a search index, and it does not store embeddings of your codebase for search." For broad questions, an Explore subagent runs many searches in its own context window and returns only the relevant findings.

Claude Code finds files by pattern, searches with regex and reads what it needs, and subagents can search in their own context window. Optional code intelligence plugins add type errors, jump to definition and find references through language servers. It also sees your git state and loads CLAUDE.md and its auto memory at the start of each session.

Either way, the agent sees only what it searched for, what it read and what your rules files tell it. Code outside that view can still break, which is the problem we covered in why AI code assistants break your build.

Project rules: Cursor rules vs CLAUDE.md

Cursor rules:

• Project rules: .mdc files in .cursor/rules/. Frontmatter decides when each applies: always, when the agent finds it relevant, when matching files are in context, or when you @-mention it.

• AGENTS.md: plain Markdown in the root or any subdirectory. Nested files combine, and the more specific one wins.

• User Rules hold your own preferences, and Team Rules can be enforced by Teams and Enterprise admins.

Claude Code instructions:

• CLAUDE.md in the project root or .claude/, read at the start of every session. CLAUDE.local.md holds personal notes, ~/.claude/CLAUDE.md covers all your projects, and IT can deploy a managed one.

• .claude/rules/*.md, with optional paths frontmatter so a rule loads only for matching files.

• AGENTS.md: read when there is no CLAUDE.md, or pulled in with an @AGENTS.md import.

• Auto memory: notes Claude saves for itself across sessions.

Each tool can now pick up the other's files:

• Cursor's CLI applies CLAUDE.md and AGENTS.md from the project root as rules.

• Claude Code's /init folds .cursor/rules/ or .cursorrules into the CLAUDE.md it writes, and /import cursor brings over Cursor's instruction files, MCP servers, commands, subagents and skills.

• Cursor loads skills from .claude/skills/, subagents from .claude/agents/ and Claude Code hooks from .claude/settings.json.

For a team on both, keep shared conventions in AGENTS.md and put @AGENTS.md at the top of CLAUDE.md. When cubic reviews a pull request, it reads CLAUDE.md, AGENTS.md and .cursor/rules as context, so the same conventions carry into review. For how review can enforce those rules, see how to configure coding agents that follow your team's standards.

MCP support

Both connect to tools like issue trackers, databases and docs through the Model Context Protocol.

• Cursor: servers live in .cursor/mcp.json or ~/.cursor/mcp.json, or come from its marketplace. It supports stdio, SSE and Streamable HTTP, and the CLI and cloud agents use MCP too (Cursor MCP docs).

• Claude Code: claude mcp add at local, project or user scope, where project scope writes a .mcp.json you commit. It supports stdio, HTTP, SSE and WebSocket servers and loads tool definitions on demand (Claude Code MCP docs).

Pricing

Cursor sells individual and team plans, and cursor.com/pricing lists what each one includes.

Claude Code is included in every paid Claude plan. As listed on claude.com/pricing on October 13, 2026:

Pro and Max include Claude Code usage up to plan limits, with usage credits after that. Team and Enterprise seat allowances reset on a rolling five-hour window and a weekly window. Anthropic says enterprise deployments average $150 to $250 per developer per month.

How to use Cursor and Claude Code together

• Extension: Claude Code's docs link an "Install for Cursor" version of the extension, which is also on the Open VSX registry.

• Terminal: install the standalone CLI and run claude in Cursor's integrated terminal. The extension's bundled copy doesn't put claude on your PATH.

• Shared config: keep conventions in AGENTS.md, imported from CLAUDE.md. Cursor also reads your .claude/ skills, subagents and hooks (hooks through a setting that is on by default).

• Split by task size: Tab and Cursor's agent for quick edits, Claude Code for longer tasks.

• Two bills: Claude Code needs its own Claude plan, Anthropic Console account or cloud provider account, on top of Cursor.

What our Bug Bench data shows

Bug Bench ranks AI coding models by the bugs we find in the code they write. It also tracks coding agents: each agent's share of AI-attributed added lines in merged pull requests we reviewed, and the model with the lowest bug rate inside each agent. These numbers describe code we reviewed, not the whole market.

Share of AI-written code

Claude Code wrote 78.1% of the AI-written code we reviewed in the week of Oct 5, 2026, up from 64.8% in the week of Jun 22. Cursor wrote 1.6%, down from 9.4%. Codex made up most of the rest, at 18.8%; we compare it with each tool in Codex vs Claude Code and Cursor vs Codex.

Weekly shares move around. Claude Code ranged from 50.2% (week of Aug 17) to 78.1% (week of Oct 5). Cursor peaked at 10.4% in the week of Aug 17 and has stayed under 4% every week since the week of Aug 24.

Lowest-bug model inside each agent

Relative bug rate is counted bugs per AI-attributed line, divided by the rate across all AI-attributed lines in the window. 1.00 is the all-model average, and lower is better. A counted bug is a review finding on AI-written code that a developer upvoted or an AI coding agent addressed. "Statistically tied" means the 95% confidence intervals overlap.

How to read it:

• Each rate compares a model used inside one agent with the overall average across all AI-written code. It is not a head-to-head score, and it doesn't show that either product writes fewer bugs.

• Bug Bench is observational. Teams choose their tools and models, so a rate reflects the work each was used for as well as the model.

• Cursor's slice is small. Only two models had enough code reviewed to rank there, against four in Claude Code.

• Some rates are young. Claude Sonnet 5.5 first appeared in the data in the week of Sep 28 and Claude Opus 5.5 a week earlier, so their rates cover two and three weeks.

Inside Claude Code, Claude Fable 5.1 had 9% more counted bugs than the all-model average, statistically tied with Claude Sonnet 5.5, while Claude Opus 5.5 had 49% more. Inside Cursor, Claude Opus 5 and GPT-5.6 Sol were statistically tied, and both point estimates sat above the average. Across all agents, GPT-5.6 Sol had 51% fewer counted bugs per line than Claude Opus 5 (0.65 vs 1.33). If you track bugs in your own repos, break them down by model as well as by tool. See the full pages for Cursor and Claude Code, or the overall model ranking.

Which one to use, by situation

• You spend the day in an editor and want help as you type: Cursor.

• You want Claude, GPT, Gemini and Grok in one tool, or want the tool to pick: Cursor.

• You hand off whole tasks and review the result: Claude Code, from the terminal, the desktop app or the web.

• You already pay for Claude Pro or Max: Claude Code is included, so try it before adding a second subscription.

• You work in JetBrains: both run there, through Claude Code's plugin or Cursor's agent over ACP.

• Your team uses both: share AGENTS.md, import it from CLAUDE.md, and review every agent's pull request the same way.

Whichever you pick, its pull requests still need review before they merge. Our AI code review guide covers what to check.

FAQ

Is Cursor or Claude Code better?

Neither is better for everyone. Cursor suits people who want an editor with autocomplete and model choice, and Claude Code suits people who hand an agent whole tasks. In the AI-written code we reviewed in the week of Oct 5, 2026, Claude Code wrote 78.1% and Cursor 1.6%, which shows what those teams use, not which tool writes better code.

Can I use Claude Code inside Cursor?

Yes. Anthropic's docs link a Cursor install of the Claude Code extension, and the claude CLI runs in Cursor's integrated terminal. Claude Code needs its own Claude plan, Anthropic Console account or cloud provider account, separate from your Cursor plan.

Does Cursor use Claude models?

Yes. Cursor's model list includes Claude Fable 5.1, Opus 5.5, Sonnet 5.5 and Haiku 5.5, next to GPT, Gemini, Grok and Composer models (models and pricing). You pick one in the model picker, or choose Auto and let Cursor pick.

Why use Claude Code if Cursor already has Claude models?

The models can be the same, but the agent around them isn't. Cursor runs Claude inside its own agent, with instructions and tools it tunes per model. Claude Code is Anthropic's agent, with CLAUDE.md, auto memory and cloud sessions, and Claude Pro and Max include its usage up to plan limits.

Can I use Claude Code instead of Cursor?

Yes, if most of your work is handing whole tasks to an agent. Claude Code edits files and runs commands from the terminal, VS Code, JetBrains, its desktop app and the web. To move a setup over, run /import cursor --dry-run to preview, then /import cursor to bring in Cursor's instruction files, MCP servers, commands, subagents and skills.