UK · pounds · no account
Is it cheaper to run the model, or rent the API?
For people who use Ollama, LM Studio or llama.cpp, and for small firms deciding whether to buy a GPU or keep paying the API. The sums are in pounds, and every number has a source or is labelled an estimate.
Rent it
Rent. The API is £0.11 a month and the electricity is £0.84. The card costs more to run than to call, before you count buying it.
Upper estimate. 575 W × (6500 tokens ÷ 324.2 tokens/sec ÷ 3,600) ÷ 1,000 × 26.32p/kWh
That expression is pence for one job. Divide by 100 for pounds, then multiply by the jobs in the month. Inputs: 575 W maximum rated power, 6,500 tokens, 324.2 tokens/sec, 26.32p/kWh.
- API this month
- £0.11
- Electricity this month
- £0.84 · 3.2 kWh
- GPU purchase
- £5,999.99
- Break-even
- Does not break even
- API cost is input tokens and output tokens, priced per million, times jobs per month. No caching, batch discount, or free tier.
- Pound figures use the stored exchange rate. They are not a quote from the company that trained the model.
- Upper estimate. Every token, in and out, is divided by the reported tokens per second. Prompt tokens are usually faster than that, and a card rarely holds its maximum rated power for the whole job, so the real bill is often lower.
- Formula, in pence per job: 575 W × (6500 tokens ÷ 324.2 tokens/sec ÷ 3,600) ÷ 1,000 × 26.32p/kWh. Divide by 100 for pounds, then multiply by the jobs in the month.
- The tokens per second are one published run, not a promise for your PC. Context length and software change it.
- The watts are the card's maximum rated graphics power. Real draw during inference is usually lower.
- The standing charge on a home bill is not added. A GPU does not create a second one.
- API price: £0.0134 in and £0.0671 out per million tokens, from $0.0180 and $0.0900 at 0.74501 dollars to the pound on 2026-11-10. OpenRouter feed 2026-11-11.
- Speed: 324.2 reply tokens/sec, 586.8 prompt tokens/sec, Q4_K_M, llama.cpp 0.7.0-dev (commit 1268eda). Run r_dwp5fgdapmw, marked Measured by llm-speed. Chat-short. No power draw in the row. Page read 11 November 2026.
- GeForce RTX 5090: 32 GB GDDR7. Total graphics power: 575 W. Specs read 2026-11-11.
- Speed is the cited run, not a guess.
- Upper estimate, based on the official total graphics power of 575 W.
OpenRouter prices · Exchange rate · GPU spec · Speed source · Ofgem unit rate