AI coding assistants have become essential tools for developers. But they're not all the same. The market has bifurcated into two philosophies: IDE-first copilots that augment your editor line by line, and agentic systems that plan and execute multi-step changes with human checkpoints.

GitHub Copilot is the archetype of the former. Anthropic's Claude Code embodies the latter. And Cursor sits somewhere in between, offering an AI-enhanced IDE experience.

We've used all three extensively. Here's our honest assessment.

Claude Code is Anthropic's terminal-native coding agent, powered by Claude Opus 4.5— currently the best model in the world for coding tasks.

Strengths:

• 200K context window — Can understand entire codebases, not just the current file
• True agentic workflows — Plans and executes multi-step changes autonomously
• MCP integrations — Connects to Linear, GitHub, Slack, databases, and hundreds of tools
• Terminal-native — Works with any IDE, any language, any toolchain
• Checkpoint system — Automatic code state saving with instant rewind
• Custom agents — Build specialized agents for your team's workflows

Weaknesses:

• Steeper learning curve than autocomplete tools
• Usage-based pricing can be unpredictable for heavy users
• Requires comfort with terminal workflows

Pricing: ~$6/developer/day average, ~$100-200/month. Pay for what you use via Claude API.

Best for: Teams building complex applications, those who want maximum AI capability, developers comfortable with terminal workflows, agencies needing rapid delivery.

Cursor is a modified VS Code fork with AI deeply integrated into the editor experience. Built by Anysphere, it's raised $900M and hit a $9.9B valuation.

Strengths:

• Familiar VS Code interface — Zero learning curve for VS Code users
• Excellent autocomplete — Tab completion feels natural and accurate
• Agent mode — Can execute multi-file changes (newer feature)
• Strong JavaScript/TypeScript — Particularly good with React, Next.js
• Visual diffs — See proposed changes before accepting

Weaknesses:

• Fork dependency on VS Code creates maintenance concerns
• Pricing model changed in 2025, causing community confusion
• Less effective for terminal-heavy workflows
• 128K context vs Claude's 200K

Pricing: Free tier with limits, Pro at $20/month, Teams at $40/user/month, Enterprise custom pricing.

Best for: Individual developers who love VS Code, teams focused on web development, those who prefer IDE-integrated AI over terminal workflows.

GitHub Copilot is the most widely-used AI coding assistant, with Microsoft backing and deep GitHub integration. It's evolved from simple autocomplete to a comprehensive platform.

Strengths:

• Multi-model access — GPT-4, Claude 3.5 Sonnet, Gemini models available
• Universal IDE support — VS Code, JetBrains, Neovim, and more
• GitHub integration — PR reviews, issue management, Actions integration
• Enterprise features — Knowledge bases, custom models, compliance tools
• Proven productivity gains — GitHub's research shows 55% productivity improvement

Weaknesses:

• Autocomplete-first design limits agentic capabilities
• Context window smaller than Claude Code
• Less effective for large-scale refactoring
• Enterprise tier requires GitHub Enterprise Cloud

Pricing: Free tier (limited), Pro at $10/month, Business at $19/user/month, Enterprise at $39/user/month.

Best for: Teams already deep in the GitHub ecosystem, enterprises with compliance requirements, developers who want proven, stable AI assistance.

Here's how the three tools stack up on key dimensions:

Feature	Claude Code	Cursor	Copilot
Context Window	200K tokens	128K tokens	Varies by model
Agentic Workflows	✅ Native	✅ Agent mode	⚠️ Limited
MCP/Tool Integration	✅ Extensive	❌ Limited	✅ GitHub native
Custom Agents	✅ Full support	❌ No	❌ No
IDE Integration	Any IDE + Terminal	Cursor IDE only	Multiple IDEs
Entry Price	Usage-based (~$6/day)	Free / $20/mo	Free / $10/mo
Best Model Access	Claude Opus 4.5	Multiple (Claude, GPT)	Multiple (GPT, Claude, Gemini)

After using all three tools extensively, here's our honest take:

Choose Claude Code if you want maximum AI capability and are comfortable with terminal workflows. It's the most powerful option for complex development tasks, large-scale refactoring, and teams that want to build custom AI workflows. This is what we use at QuantFlow.

Choose Cursor if you're an individual developer or small team that loves the VS Code experience and wants AI deeply integrated into your editor. It's particularly strong for React/Next.js development.

Choose GitHub Copilot if you're already invested in the GitHub ecosystem, need enterprise compliance features, or want the most proven/stable option. It's the safe choice for large organizations.

Our choice: We run Claude Code for everything. The agentic capabilities, MCP integrations, and custom agent system give us capabilities that simply aren't possible with autocomplete-focused tools. The 3-5x productivity gain we achieve is directly tied to Claude Code's architecture. Read more about how we build software with Claude Code.

The AI coding tool landscape in 2025 offers genuine choices. Autocomplete-focused tools like Copilot provide incremental productivity gains with minimal workflow disruption. Agentic tools like Claude Code offer transformative capabilities but require workflow adaptation.

There's no universally "best" tool—only the best tool for your specific situation. Consider your team's workflow, your project complexity, and how much you're willing to invest in learning new approaches.

If you want to see what Claude Code can do when wielded by an experienced team, we'd love to show you. Our entire development process is built on Claude Code, and the results speak for themselves.