| Pricing | Startup: Free for up to 3 users and 3 projects. Cloud Starter: $9 per user/month with unlimited users and projects. Cloud Pro: $19 per user/month with unlimited users, projects, 1,000 included AI credits per licensed user per month, and priority support. Self-hosted: Starting at $3,000 per instance/
| Free with Bring Your Own Keys (BYOK); users provide their own API keys for Claude, GPT, Gemini, Grok, or local Ollama at zero markup
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| Key features | - Specification Management: Manage connected requirements, data entities, APIs, interfaces, wireframes, and test cases in a versioned product model with traceable relations and branch-aware revisions
- Change Management: Define each product change through a Change Request that connects goal, affected specifications, project branch, implementation impact, and linked issue
- Architecture & Software Units Blueprints: Define subsystem architecture and software unit blueprints with implementation rules, responsibilities, dependencies, and file boundaries linked to product sp
- AI Assistants: AI Analyst, AI Test Designer, AI Architect, and AI Product Expert for refining specifications, designing tests, developing architecture, and reviewing implementation
- MCP for AI Coding Agents: Give coding agents branch-aware specifications, architecture guidance, software units, file traces, and Change Request context through MCP
- Specification and Code Alignment Verification: Check that code matches specifications and follows architecture rules as the system evolves
- Test Management: Organize test cases, test runs, execution, and result history
- MCP for QA Agents: Give QA agents prepared test runs, cases, steps, and expected outcomes through MCP to record execution results
| - Multi-model Smart Router (Claude, GPT, Gemini, Grok, Ollama) with bring your own keys at zero markup
- Autonomous code review with fresh reviewer verification before presenting diffs
- Canvas-first Design Studio for websites, landing pages, 3D scenes and film
- EXO desktop assistant that takes meetings, watches calendar, answers on iMessage
- iPhone remote control for real-time agent control with WebRTC streams
- Isolated worktrees keep your branch untouched until approval
- iOS Simulator automation driven by the agent
- Opt-in unrestricted model for security research, red teams, fiction, and medicine
- Local-first architecture with zero telemetry
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| What makes it different | - Preserves product context across tasks, agents, and code changes through a structured, verified product model
- Reduces handoffs and coordination by delegating whole features with connected specifications and implementation scope
- Prevents architecture drift by connecting implementation with subsystem architecture rules, unit guidelines, and component responsibilities
- Built for complex products where a single feature touches connected data, APIs, interfaces, and business rules across multiple repositories and systems
- Keeps product model current as specifications and implementation change using AI assistance and team review
| - Wins 10 out of 12 blind code reviews compared to raw model APIs
- Design Studio wins 6 out of 6 blind design tests against raw models
- Bring your own keys across all providers at zero markup unlike Cursor and Windsurf
- Local-first architecture with zero telemetry and private execution
- Integrated iPhone companion for remote approval and monitoring
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