Google: Gemini 3.1 Pro Preview Custom Tools vs OpenAI: GPT-4o Search Preview
Head-to-head API cost, context, and performance comparison. Synced at 2:56:55 PM.
Executive Summary
When evaluating Google: Gemini 3.1 Pro Preview Custom Tools against OpenAI: GPT-4o Search Preview, the pricing structure is a key differentiator. OpenAI: GPT-4o Search Preview is approximately 11% more cost-effective per 1 million tokens overall.
However, when looking at raw reasoning capabilities, OpenAI: GPT-4o Search Preview leads with a statistical ELO score of 1415. For tasks involving complex logic, coding, or instruction-following, developers might prefer OpenAI: GPT-4o Search Preview, provided their budget allows for the API burn rate.
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Raw Technical comparison
Verdict
If you are looking for pure performance and capability, Tie is statistically superior. However, if API burn rate is the primary concern, OpenAI: GPT-4o Search Preview wins out aggressively in pricing.
People Also Ask
Is Google: Gemini 3.1 Pro Preview Custom Tools cheaper than OpenAI: GPT-4o Search Preview?
No. OpenAI: GPT-4o Search Preview is the more cost-effective model, operating at a lower price point per 1 million tokens.
Which model has the larger context window?
The Google: Gemini 3.1 Pro Preview Custom Tools model has the advantage in memory, offering a massive 1,048,576 token limit for document ingestion.