LIVE INTELLIGENCE · part of the Xentir AI Index

Claude Opus 4.1 vs Qwen 3.6 Flash

Name: Claude Opus 4.1 vs Qwen 3.6 Flash — benchmark results
Creator: Epoch AI
License: https://creativecommons.org/licenses/by/4.0/

Claude Opus 4.1 · Anthropic, released 2025-08-05
Qwen 3.6 Flash · Alibaba, released 2026-04-27

“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

Qwen 3.6 Flash leads on more of the 6 benchmarks where both are measured — Claude Opus 4.1 on 2, Qwen 3.6 Flash on 4. The remaining 3 of 9 tracked benchmarks cannot be compared: 2 have 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 6 of 9 tracked benchmarks for both models — Claude Opus 4.1 leads on 2, Qwen 3.6 Flash leads on 4.

Benchmark	Claude Opus 4.1	Qwen 3.6 Flash	Leads
Epoch Capabilities Index (ECI)	144.1	143.3	Claude Opus 4.1
SWE-bench Verified	0.733	Not measured	Comparison unavailable — Qwen 3.6 Flash has no published result
GPQA Diamond	0.773 (16k)	0.833	Qwen 3.6 Flash
MATH Level 5	Not measured	Not measured	Not measured on both
OTIS Mock AIME 2024-2025	0.689 (27k)	0.844	Qwen 3.6 Flash
FrontierMath	0.072 (27k)	0.103	Qwen 3.6 Flash
FrontierMath Tier 4	0.042 (27k)	0.000	Claude Opus 4.1
SimpleQA Verified	Not measured	0.159	Comparison unavailable — Claude Opus 4.1 has no published result
Chess Puzzles	0.070	0.200	Qwen 3.6 Flash

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

Claude Opus 4.1 has no published result on SimpleQA Verified.
Qwen 3.6 Flash has no published result on SWE-bench 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 Opus 4.1	Qwen 3.6 Flash
Output	$75.00 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 Opus 4.1 → · Qwen 3.6 Flash → · the full AI Model Rankings table