The Limits of Time-and-Materials Pricing
Traditional SI (System Integration) projects still calculate contract value based on the man-month rate. In Korea, this typically means multiplying a government-published average developer wage (roughly 5.84 million KRW/month for systems software engineers, 7.75 million KRW/month for application engineers in 2026) by headcount and project duration to arrive at a total cost.
The problem is that as AI coding agents become standard practice, the assumptions behind this formula are breaking down. Teams using LLM-based coding tools are increasingly delivering the same feature in less than half the time. In one of our own internal projects, building a CRUD-based admin panel dropped from an average of 5 days before adopting AI agents to just 1.5 days after.
This creates two distortions in time-and-materials billing. First, clients start asking a reasonable question: "Why should I pay the same amount if the work finishes faster?" Second, vendors face a perverse incentive to inflate reported hours or hide the time saved by AI, which erodes contract transparency. Domestic outsourcing platforms have reportedly seen a rise in disputes over exactly this issue — projects finishing ahead of schedule with no clear billing precedent for it.
Shifting to Outcome-Based Pricing
The emerging alternative is outcome-based pricing: paying for the completeness of deliverables and business performance metrics rather than hours logged.
Practical contract designs include:
Under this structure, faster delivery directly increases the vendor's real margin, creating a genuine incentive to invest in AI tooling and process improvement. Clients, in turn, gain confidence that finishing early actually translates into lower cost.
Why Subscription-Based Development Fits the Outcome Model
Applying outcome-based pricing to one-off project contracts is difficult in practice — negotiating milestones, SLAs, and settlement criteria carries significant overhead. A subscription-based development model, however, solves this structurally.
Under a subscription, clients pay a fixed monthly fee and a dedicated team continuously ships and improves features. There's no need to track "how many hours went in this month" — only "what shipped this month." The unit of settlement effectively becomes output, not input hours.
As AI agents accelerate delivery, clients receive more features for the same subscription fee, boosting satisfaction, while the vendor can allocate the same dedicated team more efficiently across multiple client projects — increasing throughput within a fixed-cost structure. POLYGLOTSOFT's Basic plan (290,000 KRW/month) already cuts costs by up to 80% versus traditional outsourcing quotes, while AI-driven time savings translate into more feature improvements delivered within that same fee.
If you're a client looking to move away from time-and-materials billing toward an outcome-driven contract, consider POLYGLOTSOFT's subscription development service. Run a dedicated development team on a fixed monthly cost with no man-month rate negotiations — and submit a requirements document to receive a free prototype within 24 hours.