Model Comparison

Gemini 1.5 Pro vs o1-pro

o1-pro significantly outperforms across most benchmarks.

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Gemini 1.5 Pro outperforms in 0 benchmarks, while o1-pro is better at 1 benchmark (GPQA).

o1-pro significantly outperforms across most benchmarks.

Sat May 30 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Gemini 1.5 Pro specifies input context (2,097,152 tokens). Only Gemini 1.5 Pro specifies output context (8,192 tokens).

Google
Gemini 1.5 Pro
Input2,097,152 tokens
Output8,192 tokens
OpenAI
o1-pro
Input- tokens
Output- tokens
Sat May 30 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both Gemini 1.5 Pro and o1-pro support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Gemini 1.5 Pro

Text
Images
Audio
Video

o1-pro

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-pro

Proprietary

Closed source

Release Timeline

When each model was launched

Gemini 1.5 Pro was released on 2024-05-01, while o1-pro was released on 2024-12-17.

o1-pro is 8 months newer than Gemini 1.5 Pro.

Gemini 1.5 Pro

May 1, 2024

2.1 years ago

o1-pro

Dec 17, 2024

1.4 years ago

7mo newer

Knowledge Cutoff

When training data ends

Gemini 1.5 Pro has a knowledge cutoff of 2023-11-01, while o1-pro 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 o1-pro (2023-09-30).

Gemini 1.5 Pro

Nov 2023

2 mo newer
o1-pro

Sep 2023

Outputs Comparison

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Key Takeaways

Larger context window (2,097,152 tokens)
Higher GPQA score (79.0% vs 59.1%)

Detailed Comparison

AI Model Comparison Table
Feature
Google
Gemini 1.5 Pro
OpenAI
o1-pro

FAQ

Common questions about Gemini 1.5 Pro vs o1-pro.

Which is better, Gemini 1.5 Pro or o1-pro?

o1-pro significantly outperforms across most benchmarks. Gemini 1.5 Pro is made by Google and o1-pro is made by OpenAI. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Gemini 1.5 Pro compare to o1-pro in benchmarks?

Gemini 1.5 Pro scores XSTest: 98.8%, HellaSwag: 93.3%, GSM8k: 90.8%, BIG-Bench Hard: 89.2%, MGSM: 87.5%. o1-pro scores AIME 2024: 86.0%, GPQA: 79.0%.

What are the context window sizes for Gemini 1.5 Pro and o1-pro?

Gemini 1.5 Pro supports 2.1M tokens and o1-pro supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Who makes Gemini 1.5 Pro and o1-pro?

Gemini 1.5 Pro is developed by Google and o1-pro is developed by OpenAI.