LIVE INTELLIGENCE · part of the Xentir AI Index

Claude Sonnet 4.6 vs Gemini 3 Pro

Name: Claude Sonnet 4.6 vs Gemini 3 Pro — benchmark results
Creator: Epoch AI
License: https://creativecommons.org/licenses/by/4.0/

Claude Sonnet 4.6 · Anthropic, released 2026-02-17
Gemini 3 Pro · Google DeepMind, released 2025-11-18

“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 2026-09-09 · Methodology · Data Sources

Gemini 3 Pro leads on more of the 7 benchmarks where both are measured — Claude Sonnet 4.6 on 1, Gemini 3 Pro on 6. The remaining 2 of 9 tracked benchmarks cannot be compared: 1 has a result for only one of the two models, 1 for neither. Nothing on this page is estimated to fill those in.

Head-to-head

Measured on 7 of 9 tracked benchmarks for both models — Claude Sonnet 4.6 leads on 1, Gemini 3 Pro leads on 6.

Benchmark	Claude Sonnet 4.6	Gemini 3 Pro	Leads
Epoch Capabilities Index (ECI)	152.3	153.0	Gemini 3 Pro
SWE-bench Verified	0.752	0.729	Claude Sonnet 4.6
GPQA Diamond	0.874 (32k)	0.926	Gemini 3 Pro
MATH Level 5	Not measured	Not measured	Not measured on both
OTIS Mock AIME 2024-2025	0.858 (32k)	0.914	Gemini 3 Pro
FrontierMath	0.324 (16k)	0.376	Gemini 3 Pro
FrontierMath Tier 4	0.083 (16k)	0.188	Gemini 3 Pro
SimpleQA Verified	0.355 (high)	Not measured	Comparison unavailable — Gemini 3 Pro has no published result
Chess Puzzles	0.130 (32k)	0.310	Gemini 3 Pro

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.

What remains uncertain

Gemini 3 Pro has no published result on SimpleQA Verified.
1 tracked benchmark has no published result for either model.

A missing result means Xentir has not found one published by the source it cites, not that the model performs badly. See Data Sources.

Reference price

Per 1M tokens	Claude Sonnet 4.6	Gemini 3 Pro
Output	$15.00 stale	—

List price as published by the vendor. Xentir does not verify negotiated or enterprise rates, and price is not a measure of capability — see Data Sources.

Full profiles

Claude Sonnet 4.6 → · Gemini 3 Pro → · the full AI Model Rankings table