Our Methodology: The Story Point Engine

Our Cost Estimate Agent doesn’t just look at your idea; it looks at the architecture. Once our User Story Agent, Requirements Agent and Technical Specifications Agent define the requirements, the cost is calculated using a three-tier breakdown:

• Granular Decomposition: We break your project into “Story Points” based on complexity and size.
• Role-Based Allocation: Each story point is assigned estimated hours for specific roles (e.g., Frontend Developer, Backend Engineer, UI/UX Designer).
• Standardized Rate Card: We apply a transparent rate card to those hours to reach your total.

The ChatStack Formula:

Why ChatStack is 65% More Cost-Effective

Traditional agency benchmarks are inflated by manual overhead and communication gaps. ChatStack identifies a 65% efficiency gain by leveraging “Agentic Workflows” and high-fidelity structured data.

A. Structured Data vs. “Vibe Coding”

The secret to low-cost, high-speed development is Context.

• The ChatStack Way: We generate a structured, JSON-based PRD. When this is injected via MCP (Model Context Protocol) into tools like Cursor, Claude Code, or Codex, the AI has 100% of the context. It gets the code right the first time, eliminating expensive debugging cycles.
• The Risk of “Vibe Coding”: Prompting an AI without a detailed PRD leads to “context drift.” This results in high token usage, constant rework, and “spaghetti code” that is nearly impossible to maintain.
• The Manual Alternative: Traditional manual development requires massive teams to interpret vague requirements, leading to 3x the cost and 4x the timeline.

B. Expert-Led AI Implementation

We aren’t just an AI tool. With over 10 years of experience in UI/UX, Agile project management, and low-code development (including as an Official FlutterFlow Experts Enterprise Agency), we know exactly where AI can be pushed and where human oversight is required. This “Human-in-the-Loop” approach ensures your project is scalable from day one.

What “65% below benchmarks” means

In marketing we sometimes cite an approximate 65% gap between ChatStack's indicative build estimates and the benchmark ranges we use for comparison. Those benchmarks are built from typical market pricing assumptions for comparable software scope (for example, blended day rates and effort ranges for similar-sized projects), not from a single vendor quote or a guarantee of what you will pay.

The percentage is a representative illustration across common project shapes; your outcome can be higher or lower depending on geography, team seniority, risk buffers, what is in or out of scope, and how vendors price. Treat ChatStack's estimate as planning guidance, then validate with real proposals.

Comparison at a Glance

Ready to see your number?

You can generate a comprehensive, AI-readable PRD and get your instant cost estimate on our Home Page.