// blog

Self-Hosted vs API: The Real Cost Breakdown Nobody Shows You

“Self-hosting is cheaper than APIs” is both true and misleading. Here’s the breakdown that actually drives decisions.

Where API pricing bites

Commercial API tokens look cheap per call — until volume, scale, or sensitivity changes the picture:

• Volume: heavy document-processing or agent workloads can burn thousands monthly, forever. Costs scale linearly with usage.
• Price changes: provider repricing is outside your control. Teams building on list prices are building on sand.
• Data terms: prompts and documents leave your network. For regulated, client-confidential, or competitive data this alone decides the question.
• Lock-in: proprietary features, rate limits, and deprecations shape your roadmap in ways you don’t vote on.

Where self-hosting actually costs

Honest accounting includes:

• Hardware capex (amortized over ~3 years)
• Power — real money at 300–800W sustained, varies wildly by region
• Occasional maintenance: driver/runtime updates, model refreshes
• Someone accountable when it breaks (internal or a support contract)

What it doesn’t include: per-token charges. Marginal cost of the millionth query is essentially zero.

The break-even intuition

For steady workloads above roughly $400–800/month in equivalent API spend, owned hardware typically pays for itself within 12–24 months — sooner if power is cheap or hardware is repurposed from existing capacity. Below that threshold, APIs win because utilization is too low to justify capex.

But the calculation is rarely purely financial:

Why hybrid usually wins

The strongest stacks don’t pick a side. Local hardware serves steady-state and privacy-critical traffic; cloud GPUs or commercial APIs absorb peaks and frontier-only tasks — all behind one gateway with routing rules, failover, and token accounting.

That’s the design we build most often: hybrid AI infrastructure where you keep ownership of the pipeline while renting capability only when it genuinely beats owning it. If you want numbers for your specific workload, start here.