How much does it cost to fine-tune Llama 2 7B?

Full fine-tuning Llama 2 7B on 100K examples takes ~2-4 hours on 4x A100 80GB ($8-16). QLoRA fine-tuning on a single A100 takes ~6-10 hours ($12-20). Total cost is typically $15-40.

What is the difference between full fine-tuning and LoRA?

Full fine-tuning updates all model weights (needs 8-16x A100s for 70B). LoRA only trains small adapter matrices (runs on 1-2x A100s), achieving 90% of full fine-tune quality at 10% of the cost.

Can I fine-tune Llama on consumer hardware?

Yes — Llama 2 7B with QLoRA can be fine-tuned on an RTX 3090 or 4090 (24GB). A 1000-example fine-tune takes 2-4 hours at near-zero cost beyond electricity.

Llama Fine-Tuning Cost Calculator

Calculate the cost to fine-tune Llama 2 or Llama 3 on your own GPU infrastructure or cloud. Estimate GPU hours, memory requirements, and total spend.

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AI ROI

LTV:CAC Ratio

ARPU ($/month)

Monthly Churn %

CAC ($)

Gross Margin %

LTV

$3500

LTV:CAC

11.67

Payback

2.9 mo

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Healthy ✓

Benchmark: LTV:CAC ≥ 3 is healthy. Payback under 12 months is excellent. Under 1 means you lose money on each customer.

How to Use

Enter the values for the scenario you are assessing. Calculate the cost to fine-tune Llama 2 or Llama 3 on your own GPU infrastructure or cloud. Estimate GPU hours, memory requirements, and total spend. Use the llama fine-tune cost result to inform your calculation.

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Frequently Asked Questions

How much does it cost to fine-tune Llama 2 7B?

What is the difference between full fine-tuning and LoRA?

Can I fine-tune Llama on consumer hardware?