Gemini 1.5 Pro vs o1-preview Comparison

Comparing Gemini 1.5 Pro and o1-preview across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Gemini 1.5 Pro outperforms in 1 benchmarks (MATH), while o1-preview is better at 3 benchmarks (GPQA, MGSM, MMLU).

o1-preview shows notably better performance in the majority of benchmarks.

Mon Mar 23 2026 • llm-stats.com

Arena Performance

Human preference votes

Pricing Analysis

Price comparison per million tokens

Gemini 1.5 Pro costs less

For input processing, Gemini 1.5 Pro ($2.50/1M tokens) is 6.0x cheaper than o1-preview ($15.00/1M tokens).

For output processing, Gemini 1.5 Pro ($10.00/1M tokens) is 6.0x cheaper than o1-preview ($60.00/1M tokens).

In conclusion, o1-preview is more expensive than Gemini 1.5 Pro.*

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

Lowest available price from all providers

Mon Mar 23 2026 • llm-stats.com

Gemini 1.5 Pro

Input tokens$2.50

Output tokens$10.00

Best providerGoogle

o1-preview

Input tokens$15.00

Output tokens$60.00

Best providerOpenAI

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Context Window

Maximum input and output token capacity

Gemini 1.5 Pro accepts 2,097,152 input tokens compared to o1-preview's 128,000 tokens. o1-preview can generate longer responses up to 32,768 tokens, while Gemini 1.5 Pro is limited to 8,192 tokens.

Gemini 1.5 Pro

Input2,097,152 tokens

Output8,192 tokens

o1-preview

Input128,000 tokens

Output32,768 tokens

Mon Mar 23 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Gemini 1.5 Pro supports multimodal inputs, whereas o1-preview 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

o1-preview

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

o1-preview

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Pro was released on 2024-05-01, while o1-preview was released on 2024-09-12.

o1-preview is 4 months newer than Gemini 1.5 Pro.

Gemini 1.5 Pro

May 1, 2024

1.9 years ago

o1-preview

Sep 12, 2024

1.5 years ago

4mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a documented knowledge cutoff of 2023-11-01, while o1-preview's cutoff date is not specified.

We can confirm Gemini 1.5 Pro's training data extends to 2023-11-01, but cannot make a direct comparison without o1-preview's cutoff date.

Gemini 1.5 Pro

Nov 2023

o1-preview

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Provider Availability

Gemini 1.5 Pro is available from Google. o1-preview is available from OpenAI, Azure. The availability of providers can affect quality of the model and reliability.