Model Comparison
Gemini 2.5 Pro Preview 06-05 vs o1-proWhich is better in 2026?
Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks.
Verdict: Gemini 2.5 Pro Preview 06-05 vs o1-pro — which is better?
Gemini 2.5 Pro Preview 06-05 (by Google) and o1-pro (by OpenAI) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
Gemini 2.5 Pro Preview 06-05 outperforms in 1 benchmarks (GPQA), while o1-pro is better at 0 benchmarks. Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks.
Choose Gemini 2.5 Pro Preview 06-05 if…
- you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
- you want the most recent training data — it shipped Jun 2025
Choose o1-pro if…
- you are already invested in the OpenAI ecosystem
Performance Benchmarks
Comparative analysis across standard metrics
Gemini 2.5 Pro Preview 06-05 outperforms in 1 benchmarks (GPQA), while o1-pro is better at 0 benchmarks.
Gemini 2.5 Pro Preview 06-05 significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Context Window
Maximum input and output token capacity
Only Gemini 2.5 Pro Preview 06-05 specifies input context (1,048,576 tokens). Only Gemini 2.5 Pro Preview 06-05 specifies output context (65,535 tokens).
Input Capabilities
Supported data types and modalities
Both Gemini 2.5 Pro Preview 06-05 and o1-pro support multimodal inputs.
They are both capable of processing various types of data, offering versatility in application.
Gemini 2.5 Pro Preview 06-05
o1-pro
License
Usage and distribution terms
Both models are licensed under proprietary licenses.
Both models have usage restrictions defined by their respective organizations.
Proprietary
Closed source
Proprietary
Closed source
Release Timeline
When each model was launched
Gemini 2.5 Pro Preview 06-05 was released on 2025-06-05, while o1-pro was released on 2024-12-17.
Gemini 2.5 Pro Preview 06-05 is 6 months newer than o1-pro.
Jun 5, 2025
1.0 years ago
5mo newerDec 17, 2024
1.5 years ago
Knowledge Cutoff
When training data ends
Gemini 2.5 Pro Preview 06-05 has a knowledge cutoff of 2025-01-31, while o1-pro has a cutoff of 2023-09-30.
Gemini 2.5 Pro Preview 06-05 has more recent training data (up to 2025-01-31), making it potentially better informed about events through that date compared to o1-pro (2023-09-30).
Jan 2025
1.3 yr newerSep 2023
Outputs Comparison
Key Takeaways
o1-pro
View detailsOpenAI
No standout differentiators in the data we have for this pair.
Detailed Comparison
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FAQ
Common questions about Gemini 2.5 Pro Preview 06-05 vs o1-pro.