Does gpt-3.5-turbo-1106 offer lower latency than gpt-4-preview-1106, and will upgrading to Usage Tier 4 reduce response times?

Below is a concise answer based on the documentation on latency optimization:

Model Speed

• GPT-3.5-turbo-1106 is generally faster than GPT-4-preview-1106.
  • GPT-4 models typically trade off processing speed for higher quality and more varied responses.
  • In applications where speed is a priority, using GPT-3.5-turbo should result in lower latency.

Usage Tier Impact

• Upgrading from Usage Tier 3 to Tier 4 is not documented as having a direct impact on reducing the latency of responses.
  • Latency improvements are more closely tied to optimization strategies (such as prompt design and token processing improvements) and model choice rather than tier level alone.
  • For any substantial latency reduction, focus on strategies like splitting prompts (where appropriate) or simplifying the JSON output structure.

Overall, if your primary goal is faster response times, using GPT-3.5-turbo-1106 should be your better option. Additionally, upgrading your usage tier may not necessarily influence latency, so consider testing optimization approaches within your production setup.