Llama 3.1 8B Instruct vs Llama 3.1 70B Instruct: local, rented GPU, and API costs

Compare calculated local requirements, provider-published rented-GPU rates, and dated API rates or clearly labeled size estimates for Llama 3.1 8B Instruct and Llama 3.1 70B Instruct. Spanvero adds $0 markup.

Llama 3.1 8B Instruct vs Llama 3.1 70B Instruct — cost comparison

Which should you pick?

• Easiest to run locally: Llama 3.1 8B Instruct (needs ~8.0 GB VRAM at its default quant).
• Cheapest via your own API key: Llama 3.1 8B Instruct ($0.07/1M blended).
• Cheapest to rent by the hour: Llama 3.1 8B Instruct (from $0.06/hr on one rented box).
• Longest context: Either — same context window.

VRAM is calculated from catalog specs, quantization, and context. Non-estimated API rates are provider-sourced snapshots dated 2026-08-24; retired upstream rates are last-known and size-derived values are labeled "est." We don't rank model quality or quote benchmarks here.

Full cost breakdown: Llama 3.1 8B Instruct →
Full cost breakdown: Llama 3.1 70B Instruct →

Open the free LLM cost calculator → to model your workload, hardware, monthly cost, and reliability assumptions.

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Spanvero · All comparisons · Prices as of 2026-08-24. $0 markup, your own accounts, we never resell compute. © 2026 Cynosure LLC.