Llama 3.1 8B vs Llama 3.1 70B
Pricing, context window, and benchmark comparison · Last updated April 2026
Llama 3.1 8B is cheaper than Llama 3.1 70B at $0.06/1M/1M vs $0.35/1M/1M input tokens — a 6.4x cost difference. Llama 3.1 70B scores higher on quality benchmarks (ELO 1247). Choose Llama 3.1 8B for cost-sensitive workloads; choose Llama 3.1 70B for maximum quality.
Which is cheaper: Llama 3.1 8B or Llama 3.1 70B?
Llama 3.1 8B is the cheaper option at $0.06/1M per 1M input tokens, compared to $0.35/1M for Llama 3.1 70B. That is a 6.4x cost difference on input tokens. Output pricing follows a similar pattern: Llama 3.1 8B charges $0.06/1M/1M vs $0.40/1M/1M for Llama 3.1 70B.
Which has better quality: Llama 3.1 8B or Llama 3.1 70B?
Based on LMSYS Chatbot Arena rankings, Llama 3.1 70B achieves a higher ELO score (1247 vs 1176), suggesting stronger performance on open-ended tasks. Llama 3.1 8B excels at essentially free to run via groq or local deployment. Llama 3.1 70B is known for excellent price-to-quality ratio.
Which should you choose: Llama 3.1 8B or Llama 3.1 70B?
- → Essentially free to run via Groq or local deployment
- → Open source — full data privacy
- → Fast inference on commodity hardware
- → Excellent price-to-quality ratio
- → Open source and self-hostable
- → Good at coding and instruction following
Frequently Asked Questions
Which is cheaper: Llama 3.1 8B or Llama 3.1 70B?
Llama 3.1 8B is cheaper at $0.06/1M per 1M input tokens, making it 6.4x more affordable.
Which has better quality: Llama 3.1 8B or Llama 3.1 70B?
Llama 3.1 70B scores higher on the LMSYS Chatbot Arena with an ELO of 1247, suggesting better overall quality for most tasks.
Which has a larger context window: Llama 3.1 8B or Llama 3.1 70B?
Both Llama 3.1 8B and Llama 3.1 70B have the same context window.
Should I choose Llama 3.1 8B or Llama 3.1 70B?
Choose Llama 3.1 8B if cost is the priority. Choose Llama 3.1 70B if benchmark quality is most important. Consider your specific use case: Llama 3.1 8B is best for fast-response and low-cost, while Llama 3.1 70B excels at coding and low-cost.
Is Llama 3.1 8B or Llama 3.1 70B open source?
Llama 3.1 8B is open source. Llama 3.1 70B is open source.