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Kiro vs Marvin
Side-by-side comparison of features, pricing, and ratings
Pricing
Freemium
Free
Plans
$0/month
$20/month
$40/month
$200/month
$0/mo
Popularity
5.5k views
7.1k views
Skill Level
Intermediate
Intermediate
API Available
Platforms
CLIWebPlugin
CLI
Categories
💻 Code & Development🤖 Automation & Agents⚡ Productivity
💻 Code & Development🤖 Automation & Agents
Features
Spec-driven development with EARS requirements
Natural language to structured requirements generation
Architectural design with system design and tech stack recommendations
Discrete task implementation plans with dependencies
Advanced context management with steering files
Agent hooks for autonomous event-triggered execution
Autopilot mode for unattended long-running tasks
Multimodal chat supporting images (UI designs, whiteboards)
Per-prompt credit usage tracking in real-time
Intelligent error diagnostics (syntax, type, semantic errors)
Code diff visualization with one-click approval
Git commit message generation from source control
Native MCP support (including remote)
Multiple model support: Claude Sonnet 4.5 and Auto selection
Compatible with VS Code via Open VSX plugins and themes
AI functions via @ai_fn decorator
AI classifiers via @ai_classifier decorator
Embeddings generation with @ai.embed
Structured data extraction with Pydantic models
Agent loops and tool use
Built-in streaming with SSE
Rate limiting and error handling
OpenAI & Anthropic model support
Async-first API
Type-safe outputs with Pydantic
Integrations
MCP (Model Context Protocol)
Open VSX (VS Code extensions)
SSH (remote terminal access)
Git (commit message generation)
Claude Sonnet 4.5
Auto (mix of frontier models)