Calculator
AI API vs Self-Hosting Break-Even Calculator
Compare the monthly economics of buying an AI API versus running a self-hosted model with compute, staff and marginal per-request cost.
Result
API monthly cost
$5,200.00
Self-host monthly cost
$3,900.00
Monthly API minus self-host cost
$1,300.00
Break-even monthly requests
723,405
How to use this calculator
What this calculator does
Compare the monthly economics of buying an AI API versus running a self-hosted model with compute, staff and marginal per-request cost.
How to use it
Start from measured monthly API requests and token counts. Compare the API tariff against a realistic server budget, personnel effort and per-request networking or serving costs.
What the result means
Self-hosting can be cheaper on modeled unit economics while still carrying scaling, model quality, uptime and security risks. Check whether the hardware can actually serve the entered workload.
Browse more ai calculators for related estimates and comparisons.
Actual AI costs depend on provider pricing, model choice, token usage, discounts, caching, retries, batching, tool calls, workflow design, and usage volume.
Scenario guidance
When to use this
Use when exploring steady AI workloads with a possible self-managed inference option.
Example scenario
A developer considers moving high-volume predictable classification to dedicated GPUs.
Inputs that usually matter most
- Measured token mix and API rates
- Full compute, operating labor and utilization
Common mistake to avoid
Do not claim self-hosting is cheaper if capacity, service quality or model parity is untested.
How to interpret the result
Compare monthly differential and volume break-even, then review operational risk.
Educational scenario with editable values; vendor billing rules, quality and service levels can differ.
Formula
Assumes self-hosted capacity is sufficient for the modeled volume; GPU utilization, model quality, redundancy, licensing and uptime can dominate real economics. A non-positive per-request price advantage means no volume-only break-even.
Worked calculation
One million requests with 1,000 input and 400 output tokens, at $2/$8 API rates, cost $5,200. Self-hosting with $2,500 compute, 15 × $60 labor and $0.0005/request costs $3,900; modeled break-even is about 723,405 requests monthly.
Frequently Asked Questions
Why might break-even be unavailable?
If self-hosting has no lower per-request cost than the API, additional volume alone cannot cover its fixed costs.
Does the calculator verify GPU capacity?
No. Use the AI Deployment Capacity Calculator and actual throughput benchmarks before sizing infrastructure.
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