AI Coding Assistants

A comprehensive guide to choosing between the top AI-powered development tools. Understand the architecture, use cases, and trade-offs.

Antigravity (Gemini) Claude Code (Opus 4.5) GitHub Copilot Cursor (Bonus)

At a Glance

Core identity and specifications for each tool

Antigravity

Gemini 3 Pro

"The Orchestrator"

Context Window 1M+ tokens
Parallelism Native (50+ agents)
IDE Integration Web-based
Best For Infrastructure

Claude Code

Opus 4.5

"The Elite Engineer"

Context Window 200k tokens
Parallelism SDK-based subagents
IDE Integration Terminal + VS Code
Best For Complex Logic

GitHub Copilot

Agent Mode (GPT-4o)

"The Teammate"

Context Window Hybrid RAG
Parallelism Copilot Squad
IDE Integration Native (VS Code, JetBrains)
Best For Daily Workflow

Cursor

Multi-model (Claude/GPT)

"The IDE Reimagined"

Context Window Model-dependent
Parallelism Background Agents
IDE Integration IS the IDE
Best For Fast Iteration

Feature Comparison

Detailed breakdown of key capabilities

Autonomy & Agent Architecture

How each tool approaches autonomous task execution and decision-making

Antigravity

Orchestrator Model

Delegates complex tasks across multiple specialized agents running in parallel. Think of it as a project manager coordinating a team.

Example "Deploy microservices to AWS, GCP, and Azure simultaneously with environment-specific configs"

Claude Code

Elite Engineer Model

Deep, sequential reasoning through problems. Takes time to understand context before acting. Excels at architectural decisions.

Example "Refactor this authentication system to use JWT with refresh tokens while maintaining backward compatibility"

GitHub Copilot

Pair Programmer Model

Works alongside you in real-time. Suggests code as you type, answers questions in chat, runs in your existing workflow.

Example "Complete this function based on the docstring and surrounding code patterns"

Cursor

Conversational IDE Model

The entire editor is AI-aware. Select code, ask questions, apply changes with Cmd+K. Background agents handle larger tasks.

Example "Select a function → 'Add error handling and retry logic' → Apply diff directly"

State Management & Recovery

How each tool handles long-running tasks and enables safe experimentation

Antigravity

Thought Signatures

Encrypted state tokens enable managing 50+ concurrent tool calls. State persists across sessions for multi-day projects.

Example Managing a distributed build pipeline with 100+ steps across multiple CI systems

Claude Code

Checkpoints & /rewind

Local checkpoint system lets you rollback to any previous state. Safe experimentation without fear of losing work.

Example Try a risky database migration, then /rewind if it breaks tests

GitHub Copilot

Isolated Environments

Agent mode runs in isolated containers. Changes are versioned via PRs. Preview deployments for testing.

Example Test breaking changes in an isolated preview environment before merging

Cursor

Git Integration + Undo

Tight git integration for versioning. Multi-step undo for AI changes. Diff view before applying any modification.

Example Review the diff of AI-generated changes before accepting, easy rejection of bad suggestions

Verification & Quality Assurance

Built-in mechanisms for ensuring code quality and correctness

Antigravity

Visual Artifacts

Browser recordings, execution logs, and visual proof of completed tasks. Full audit trail for compliance.

Example Automated UI testing with video recordings proving user flows work correctly

Claude Code

Hooks System

Configure linters, security scanners, and tests as automated post-task triggers. Catches issues before commit.

Example Auto-run ESLint + security audit after every code generation

GitHub Copilot

Enterprise Governance

PR reviews, audit logs, branch protections, and compliance gates. Built for regulated industries.

Example Require 2 human approvals + passing security scan before any AI-generated code merges

Cursor

Inline Verification

See diffs before applying. Built-in linting. Quick iteration cycle catches errors early.

Example Instant feedback loop: write → AI suggests → review diff → accept/reject → repeat

Context Window & Memory

How much code each tool can "see" and reason about simultaneously

Antigravity

1M+ Token Context

Can hold an entire monolith in context. Remembers project state across sessions for months.

Example Analyze 6 months of commit history to understand why architectural decisions were made

Claude Code

200k High Precision

Smaller window but optimized for zero-error logic. Every token matters. Best for critical code paths.

Example Refactoring financial calculations where a single bug could cost millions

GitHub Copilot

Hybrid RAG + Skills

Indexes your workspace. "Skills" provide domain knowledge. @workspace participant for repo-wide questions.

Example "@workspace what API patterns does this codebase use?" pulls from indexed knowledge

Cursor

Codebase Indexing

Indexes your entire project. @codebase references pull relevant context automatically.

Example "How do we handle authentication?" → Cursor finds and includes all auth-related files

Parallelism & Multi-Agent

Ability to run multiple AI operations simultaneously

Antigravity

Native Multi-Agent

Dedicated Manager Surface for coordinating parallel agents. Built for distributed workloads.

Example 10 agents simultaneously fixing TypeScript errors across different modules

Claude Code

SDK Subagents

Spawn specialized subagents via the SDK. Requires custom implementation but highly flexible.

Example Spawn separate agents for backend API, frontend components, and test writing

GitHub Copilot

Copilot Squad

Native parallel subagents (research agent + coding agent). Enterprise preview feature.

Example One agent researches API documentation while another implements the integration

Cursor

Background Agents

Long-running tasks continue in background. Multiple chat threads for parallel conversations.

Example Start a background refactor, continue coding in main editor, check results later

Use Case Recommendations

Which tool for which job?

Infrastructure & DevOps

1
Antigravity Multi-cloud deployments, CI/CD pipelines, infrastructure as code

Parallel agent orchestration excels at managing multiple environments, services, and deployment targets simultaneously. The massive context window handles complex Terraform configurations.

Legacy Code Refactoring

1
Claude Code Architectural changes, migration paths, complex logic rewrites

Deep reasoning capabilities understand the "why" behind legacy decisions. Checkpoint system enables safe, incremental refactoring with easy rollback.

Team Development

1
GitHub Copilot Code review, PR workflows, team collaboration, compliance

Native GitHub integration, enterprise governance features, and PR-based workflows make it ideal for teams with existing GitHub infrastructure.

Rapid Prototyping

1
Cursor Fast iteration, UI development, quick experiments

Cmd+K inline editing, instant feedback, and diff-based changes create the fastest iteration cycle. Perfect for exploring ideas quickly.

Financial/Critical Systems

1
Claude Code Zero-error tolerance, audit requirements, precise logic

200k context window is optimized for precision over breadth. Hook system enforces verification. Excellent at explaining its reasoning.

Full-Stack Feature Development

1
Cursor Frontend + backend changes, component development

Codebase indexing means it understands your full stack. Inline editing works across file types. Composer mode handles multi-file changes.

Bug Investigation

1
Claude Code Root cause analysis, complex debugging, stack trace analysis

Sequential deep-dive reasoning excels at tracing bugs through complex codebases. Explains its investigation process clearly.

Documentation & Learning

1
GitHub Copilot Code explanations, docstrings, inline comments

Excellent at explaining existing code. @docs participant references official documentation. Integrates naturally into reading workflow.

Quick Decision Tree

Need 50+ parallel operations?
→ Antigravity
Need deep reasoning & precision?
→ Claude Code
Need team/enterprise features?
→ GitHub Copilot
Need fastest iteration speed?
→ Cursor

Pricing Comparison

Current pricing as of January 2026

Antigravity

$20
per month (Pro)
  • 1M+ token context
  • Parallel agent orchestration
  • Visual verification artifacts
  • Web-based interface
  • API access included

Claude Code

$20
per month (Pro) or pay-per-use
  • Opus 4.5 model access
  • 200k precision context
  • Checkpoint/rewind system
  • Terminal + VS Code
  • Hook integrations

GitHub Copilot

$19
per month (Business)
  • Native IDE integration
  • Agent mode
  • Copilot Squad (preview)
  • Enterprise governance
  • Audit logs & compliance

Cursor

$20
per month (Pro)
  • Full AI-native IDE
  • Multi-model support
  • Codebase indexing
  • Background agents
  • Composer mode

Strengths & Weaknesses

Honest assessment of each tool's trade-offs

Antigravity

Strengths
  • Massive context window (1M+ tokens)
  • Best parallel execution
  • Visual verification artifacts
  • Multi-month project memory
  • Cross-platform orchestration
Limitations
  • Web-based only (no local IDE)
  • Steeper learning curve
  • Overkill for simple tasks
  • Newer, less ecosystem support

Claude Code

Strengths
  • Deepest reasoning capability
  • Excellent at explaining code
  • Checkpoint/rollback safety
  • Hook system for automation
  • Highest precision for critical code
Limitations
  • Smaller context window (200k)
  • Sequential (slower for parallel tasks)
  • Terminal-first may not suit all
  • Subagents require SDK work

GitHub Copilot

Strengths
  • Best IDE integration
  • Mature enterprise features
  • Seamless GitHub workflow
  • Familiar to most developers
  • Strong compliance/audit features
Limitations
  • Less autonomy than competitors
  • RAG context can miss nuance
  • Agent mode still maturing
  • Tied to GitHub ecosystem

Cursor

Strengths
  • Fastest iteration cycle
  • Best inline editing (Cmd+K)
  • Multi-model flexibility
  • Excellent diff visualization
  • Codebase-aware suggestions
Limitations
  • Requires switching IDEs
  • Model costs add up quickly
  • Less enterprise governance
  • Background agents still beta