Google: Gemini 3.1 Pro Preview Custom Tools vs OpenAI: o3 Pro
Head-to-head API cost, context, and performance comparison. Synced at 9:49:59 AM.
Executive Summary
When evaluating Google: Gemini 3.1 Pro Preview Custom Tools against OpenAI: o3 Pro, the pricing structure is a key differentiator. Google: Gemini 3.1 Pro Preview Custom Tools is approximately 86% more cost-effective per 1 million tokens overall.
However, when looking at raw reasoning capabilities, OpenAI: o3 Pro leads with a statistical ELO score of 1300. For tasks involving complex logic, coding, or instruction-following, developers might prefer OpenAI: o3 Pro, 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, Google: Gemini 3.1 Pro Preview Custom Tools wins out aggressively in pricing.
People Also Ask
Is Google: Gemini 3.1 Pro Preview Custom Tools cheaper than OpenAI: o3 Pro?
Yes. Google: Gemini 3.1 Pro Preview Custom Tools is cheaper for both input and output generation compared to OpenAI: o3 Pro. Exploring alternatives often yields cost reductions.
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.