LIVE INTELLIGENCE · part of the Xentir AI Index

Gemini 2.5 Pro Preview (May 2025) vs o1

Gemini 2.5 Pro Preview (May 2025) · Google DeepMind, released 2025-05-06
o1 · OpenAI, released 2024-12-17

“Epoch AI, 'AI Benchmarking Hub'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource].” · epoch.ai/benchmarks · Licensed CC BY 4.0 · data last verified 2026-07-26 · Methodology · Data Sources

Head-to-head

Measured on 3 of 9 tracked benchmarks for both models — Gemini 2.5 Pro Preview (May 2025) leads on 2, o1 leads on 1.

Benchmark	Gemini 2.5 Pro Preview (May 2025)	o1	Leads
Epoch Capabilities Index (ECI)	142.9	142.7	Gemini 2.5 Pro Preview (May 2025)
SWE-bench Verified	Not measured	Not measured	Not measured on both
GPQA Diamond	0.667	0.768 (high)	o1
MATH Level 5	0.959	0.947 (high)	Gemini 2.5 Pro Preview (May 2025)
OTIS Mock AIME 2024-2025	Not measured	0.733 (medium)	Not measured on both
FrontierMath	Not measured	0.093 (high)	Not measured on both
FrontierMath Tier 4	Not measured	Not measured	Not measured on both
SimpleQA Verified	Not measured	Not measured	Not measured on both
Chess Puzzles	Not measured	Not measured	Not measured on both

Benchmark results measure specific tasks and should not be treated as a universal measure of model quality. A model with no row here for a benchmark has not been measured on it — that is left blank, never estimated.

Full profiles

Gemini 2.5 Pro Preview (May 2025) → · o1 → · the full AI Model Rankings table