Noometry

Model comparison

Claude Opus 5 vs Qwen3.6 Flash

Claude Opus 5 is the stronger model overall, scoring 67.8 to 38.8 on the Noometry Index. Qwen3.6 Flash costs 24× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

Last verified . 11 shared benchmarks.

Claude Opus 5 Anthropic

67.8

Rank #4 Confirmed

Qwen3.6 Flash Alibaba (Qwen)

38.8

Rank #182 Confirmed

Summary

  • They share 11 benchmarks with published results for both. Claude Opus 5 scores higher in 3 categories and Qwen3.6 Flash in 0 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5 leads 77.2 to 29.0.
  • The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 85.6% for Claude Opus 5 and 22.5% for Qwen3.6 Flash.
  • Qwen3.6 Flash is cheaper at $0.19 / $1.13 per million input/output tokens, against $5 / $25 for Claude Opus 5.

Side by side

Claude Opus 5Qwen3.6 Flash
ProviderAnthropicAlibaba (Qwen)
Noometry Index67.838.8
Released2026-07-242026-04-27
WeightsProprietaryProprietary
Context window1M1M
Max output128K66K
Input $ / M tokens$5$0.19
Output $ / M tokens$25$1.13
Results tracked5713

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Category by category

Coding Not comparable

Claude Opus 5: 67.5 (#5), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
ALE-Bench2,165326.4
DeepSWE73.6%—
FrontierCode53.4%—
CursorBench46.6%—
LMArena WebDev1691—
FrontierSWE52%—
SciCode56.4%—
WeirdML91.8%—
LMArena Coding1534—

Agentic & Tool Use Not comparable

Claude Opus 5: 55.6 (#1), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
APEX-Agents65.8%—
OSWorld 2.031.4%—
τ²-bench Banking48.7%—
PostTrainBench35%—
BALROG63.4%—
GBAEval79.6%—
GDP.pdf24%—
Vending-Bench 211,182—

Reasoning Claude Opus 5 leads

Claude Opus 5: 77.2 (#4), Qwen3.6 Flash: 29.0 (#96)

BenchmarkClaude Opus 5Qwen3.6 Flash
SimpleBench80.6%35.2%
Chess Puzzles42%20%
Mystery Game Puzzles59%18%
DTBench97.9%77.1%
LMCA64.5%31%
Epoch Capabilities Index162.78143.26
ARC-AGI-290.4%—
NYT Connections (extended)94.3%—
ARC-AGI-197.5%—
CritPt29.1%—
EBR-Bench45.7%—
LMArena Hard Prompts1526—
Bench to the Future 30.12—

Math Claude Opus 5 leads

Claude Opus 5: 86.2 (#8), Qwen3.6 Flash: 39.0 (#117)

BenchmarkClaude Opus 5Qwen3.6 Flash
FrontierMath (Tiers 1-3)85.6%22.5%
OTIS Mock AIME 2024-202598.9%84.4%
FrontierMath Tier 473.2%—
ProofBench99%—
LMArena Math1531—
FrontierMath (Feb 2025 set)—10.3%
FrontierMath Tier 4 (v1)—0%

Knowledge Claude Opus 5 leads

Claude Opus 5: 66.8 (#9), Qwen3.6 Flash: 42.1 (#100)

BenchmarkClaude Opus 5Qwen3.6 Flash
GPQA Diamond93.9%83.3%
SimpleQA Verified59.9%15.9%
LMArena Expert1557—

Multimodal Not comparable

Claude Opus 5: 50.8 (#8), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
LMArena Vision1319—
Blueprint-Bench 230.4%—
Furniture Assembly60.8%—
LMArena Document1516—

Multilingual Not comparable

Claude Opus 5: 58.8 (#4), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
LMArena Non-English1501—
LMArena Chinese1574—
LMArena French1519—
LMArena German1524—
LMArena Japanese1516—
LMArena Korean1521—
LMArena Russian1507—
LMArena Spanish1519—

Instruction Following Not comparable

Claude Opus 5: 79.2 (#7), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
LMArena Instruction Following1517—

Long Context Not comparable

Claude Opus 5: 46.5 (#21), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
LMArena Longer Query1515—

Writing & Preference Not comparable

Claude Opus 5: 79.2 (#1), Qwen3.6 Flash: —

BenchmarkClaude Opus 5Qwen3.6 Flash
LMArena Text1507—
LMArena Creative Writing1491—
EQ-Bench Creative Writing2133—
EQ-Bench 41385—
LMArena Multi-Turn1499—

Frequently asked questions

Is Claude Opus 5 better than Qwen3.6 Flash?

Claude Opus 5 is the stronger model overall, scoring 67.8 to 38.8 on the Noometry Index. Qwen3.6 Flash costs 24× less per token, which makes it the better buy when Claude Opus 5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 5 or Qwen3.6 Flash?

Qwen3.6 Flash is cheaper. It lists at $0.19 per million input tokens and $1.13 per million output tokens; Claude Opus 5 lists at $5 and $25.

Which has the bigger context window?

Both accept 1M tokens.

How many benchmarks do Claude Opus 5 and Qwen3.6 Flash share?

11 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Qwen3.6 Flash has 13.

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