Gemini 3.1 Pro vs o3
Google's frontier model with a large leap in core reasoning.
OpenAI's most powerful reasoning model — top across math, coding, and science.
No captured outputs for these models yet.
Frequently Asked Questions: Gemini 3.1 Pro vs o3▼
Which is better, Gemini 3.1 Pro or o3?
▼
Based on the Capability Index, Gemini 3.1 Pro scores higher (86.4 vs 79.2). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, Gemini 3.1 Pro or o3?
▼
o3 has a lower blended cost. Gemini 3.1 Pro: $2.00 input / $12.00 output. o3: $2.00 input / $8.00 output.
Which has a larger context window, Gemini 3.1 Pro or o3?
▼
Gemini 3.1 Pro has a larger context window: Gemini 3.1 Pro supports 1M tokens vs o3 at 200K tokens.
Do both Gemini 3.1 Pro and o3 support vision?
▼
Yes, both Gemini 3.1 Pro and o3 support vision/image input.
Which has better coding performance, Gemini 3.1 Pro or o3?
▼
Gemini 3.1 Pro scores higher on SWE-bench Verified: Gemini 3.1 Pro resolves 81% vs o3 at 62%.
What are the key differences between Gemini 3.1 Pro and o3?
▼
Key differences: Gemini 3.1 Pro has a notably higher capability index (7.2 point gap). Compare full specs on this page.
Which model should I choose for my use case?
▼
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Gemini 3.1 Pro and o3 for free on idapt.app to see which performs better for your specific needs.