Gemini 1.5 Pro vs o3-mini Comparison

Comparing Gemini 1.5 Pro and o3-mini across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 1.5 Pro outperforms in 0 benchmarks, while o3-mini is better at 4 benchmarks (GPQA, MATH, MGSM, MMLU).

o3-mini significantly outperforms across most benchmarks.

Wed Mar 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

o3-mini costs less

For input processing, Gemini 1.5 Pro ($2.50/1M tokens) is 2.3x more expensive than o3-mini ($1.10/1M tokens).

For output processing, Gemini 1.5 Pro ($10.00/1M tokens) is 2.3x more expensive than o3-mini ($4.40/1M tokens).

In conclusion, Gemini 1.5 Pro is more expensive than o3-mini.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers

Wed Mar 18 2026 • llm-stats.com

Gemini 1.5 Pro

Input tokens$2.50

Output tokens$10.00

Best providerGoogle

o3-mini

Input tokens$1.10

Output tokens$4.40

Best providerAzure

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Context Window

Maximum input and output token capacity

Gemini 1.5 Pro accepts 2,097,152 input tokens compared to o3-mini's 200,000 tokens. o3-mini can generate longer responses up to 100,000 tokens, while Gemini 1.5 Pro is limited to 8,192 tokens.

Gemini 1.5 Pro

Input2,097,152 tokens

Output8,192 tokens

o3-mini

Input200,000 tokens

Output100,000 tokens

Wed Mar 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Pro supports multimodal inputs, whereas o3-mini does not.

Gemini 1.5 Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

Gemini 1.5 Pro

Text

Images

Audio

Video

o3-mini

Text

Images

Audio

Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Gemini 1.5 Pro

Proprietary

Closed source

o3-mini

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Pro was released on 2024-05-01, while o3-mini was released on 2025-01-30.

o3-mini is 9 months newer than Gemini 1.5 Pro.

Gemini 1.5 Pro

May 1, 2024

1.9 years ago

o3-mini

Jan 30, 2025

1.1 years ago

9mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a knowledge cutoff of 2023-11-01, while o3-mini has a cutoff of 2023-09-30.

Gemini 1.5 Pro has more recent training data (up to 2023-11-01), making it potentially better informed about events through that date compared to o3-mini (2023-09-30).

Gemini 1.5 Pro

Nov 2023

2 mo newer

o3-mini

Sep 2023

Provider Availability

Gemini 1.5 Pro is available from Google. o3-mini is available from Azure, OpenAI. The availability of providers can affect quality of the model and reliability.