LIVE INTELLIGENCE · part of the Xentir AI Index

Claude Haiku 4.5 vs Gemini 2.5 Pro Preview (May 2025)

Claude Haiku 4.5 · Anthropic, released 2025-10-15
Gemini 2.5 Pro Preview (May 2025) · Google DeepMind, released 2025-05-06

“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 — Claude Haiku 4.5 leads on 3.

Benchmark	Claude Haiku 4.5	Gemini 2.5 Pro Preview (May 2025)	Leads
Epoch Capabilities Index (ECI)	142.9	142.9	Claude Haiku 4.5
SWE-bench Verified	Not measured	Not measured	Not measured on both
GPQA Diamond	0.712 (32k)	0.667	Claude Haiku 4.5
MATH Level 5	0.964 (32k)	0.959	Claude Haiku 4.5
OTIS Mock AIME 2024-2025	0.667 (32k)	Not measured	Not measured on both
FrontierMath	0.059 (32k)	Not measured	Not measured on both
FrontierMath Tier 4	0.021 (32k)	Not measured	Not measured on both
SimpleQA Verified	0.059 (32k)	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

Claude Haiku 4.5 → · Gemini 2.5 Pro Preview (May 2025) → · the full AI Model Rankings table