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Gemini 3.1 Pro vs o3

Gemini 3.1 Proo3
ProviderGoogleOpenAI
Context Window2,000,000200,000
Release Date2025-04-16
Input Price$2.00/ 1M tokens$2.00/ 1M tokens
Output Price$12.00/ 1M tokens$8.00/ 1M tokens
Best forcomplex reasoning · coding · long-context · multimodalmathematics · coding · scientific reasoning · complex planning

Capabilities

Gemini 3.1 Proo3
Vision
Reasoning
Coding
Audio
Tools
Long Context

Ranking Comparison

Gemini 3.1 Proo3
Overall5087.9
Benchmark093
Capability10057.1
Price Efficiency100100
Context100100

Overall = Benchmark 50% + Capability 20% + Price Efficiency 20% + Context 10%.

Benchmark Comparison

Gemini 3.1 Proo3
Coding
Reasoning
Math
Vision

Price History

Gemini 3.1 Pro

DateInputOutput
2026-08-05$2.00$12.00

/ 1M tokens

o3

DateInputOutput
2026-08-05$2.00$8.00

/ 1M tokens

Gemini 3.1 Pro

Google's newest flagship with a 2M context window and advanced reasoning (preview).

o3

OpenAI reasoning model that thinks before answering, strongest on STEM and logic.