Noometry

Model comparison

Claude Opus 4 vs Qwen3 8B

Claude Opus 4 is the stronger model overall, scoring 43.1 to 33.7 on the Noometry Index. Qwen3 8B costs 97× less per token, which makes it the better buy when Claude Opus 4's lead doesn't matter for your workload.

Last verified . 8 shared benchmarks.

Claude Opus 4 Anthropic

43.1

Rank #100 Confirmed

Qwen3 8B Alibaba (Qwen)

33.7

Rank #238 Confirmed

Summary

  • They share 8 benchmarks with published results for both. Claude Opus 4 scores higher in 6 categories and Qwen3 8B in 0 categories; 6 gaps are clear of the uncertainty.
  • The widest gap is in coding, where Claude Opus 4 leads 47.2 to 34.0.
  • The biggest single-benchmark swing is LMCA: 37.4% for Claude Opus 4 and 8.8% for Qwen3 8B.
  • Qwen3 8B is cheaper at $0.18 / $0.70 per million input/output tokens, against $15 / $75 for Claude Opus 4.
  • Claude Opus 4 accepts more context: 200K tokens versus 131K.
  • Qwen3 8B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4Qwen3 8B
ProviderAnthropicAlibaba (Qwen)
Noometry Index43.133.7
Released2025-05-222025-04
WeightsProprietaryOpen
Context window200K131K
Max output32K8K
Input $ / M tokens$15$0.18
Output $ / M tokens$75$0.70
Results tracked5611

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Category by category

Coding Claude Opus 4 leads

Claude Opus 4: 47.2 (#62), Qwen3 8B: 34.0 (#248)

BenchmarkClaude Opus 4Qwen3 8B
SWE-bench Verified70.7%—
SWE-bench Verified (bash only)67.6%—
Aider Polyglot72%—
SciCode—22.6%
GSO6.9%—
WeirdML43.7%—
LMArena Coding1442—
AlgoTune1.33—

Agentic & Tool Use Claude Opus 4 leads

Claude Opus 4: 34.8 (#42), Qwen3 8B: 30.2 (#78)

BenchmarkClaude Opus 4Qwen3 8B
Berkeley Function Calling Leaderboard—42.6%
Cybench38%—
DeepResearch Bench46.8%—
LMArena Search1127—
METR Time Horizons63.9%—

Reasoning Claude Opus 4 leads

Claude Opus 4: 27.3 (#121), Qwen3 8B: 16.6 (#303)

BenchmarkClaude Opus 4Qwen3 8B
CritPt0.3%0%
DTBench81.6%59.7%
LMCA37.4%8.8%
Epoch Capabilities Index142.67136.17
ARC-AGI-28.6%—
SimpleBench58.8%—
Kagi LLM Benchmark74.3%—
ARC-AGI-135.7%—
Chess Puzzles—5%
EnigmaEval5.6%—
LMArena Hard Prompts1399—
ForecastBench61.1—

Math Claude Opus 4 leads

Claude Opus 4: 42.0 (#86), Qwen3 8B: 34.9 (#191)

BenchmarkClaude Opus 4Qwen3 8B
OTIS Mock AIME 2024-202564.4%56.1%
Omni-MATH61.6%—
LMArena Math1390—
MATH Level 585%—
FrontierMath (Feb 2025 set)4.5%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4 leads

Claude Opus 4: 44.0 (#88), Qwen3 8B: 36.1 (#173)

BenchmarkClaude Opus 4Qwen3 8B
GPQA Diamond76.3%56.8%
Vectara Hallucination Rate12%4.8%
Humanity's Last Exam10.7%—
MMLU-Pro87.5%—
Confabulations15.9%—
GPQA (HELM)70.8%—
LMArena Expert1386—

Multimodal Not comparable

Claude Opus 4: 31.5 (#106), Qwen3 8B: —

BenchmarkClaude Opus 4Qwen3 8B
LMArena Vision1192—
GeoBench49%—
VPCT38%—

Multilingual Not comparable

Claude Opus 4: 48.8 (#138), Qwen3 8B: —

BenchmarkClaude Opus 4Qwen3 8B
LMArena Non-English1362—
LMArena Chinese1386—
LMArena French1372—
LMArena German1391—
LMArena Japanese1331—
LMArena Korean1321—
LMArena Russian1392—
LMArena Spanish1389—

Instruction Following Not comparable

Claude Opus 4: 77.1 (#28), Qwen3 8B: —

BenchmarkClaude Opus 4Qwen3 8B
IFEval91.8%—
LMArena Instruction Following1406—

Long Context Claude Opus 4 leads

Claude Opus 4: 39.6 (#172), Qwen3 8B: 37.9 (#210)

BenchmarkClaude Opus 4Qwen3 8B
Fiction.LiveBench61.1%62.1%
LMArena Longer Query1422—

Writing & Preference Not comparable

Claude Opus 4: 61.2 (#89), Qwen3 8B: —

BenchmarkClaude Opus 4Qwen3 8B
LMArena Text1377—
LMArena Creative Writing1387—
Short-Story Creative Writing83.6%—
EQ-Bench Creative Writing1580—
WildBench85.2%—
LMArena Multi-Turn1396—

Frequently asked questions

Is Claude Opus 4 better than Qwen3 8B?

Claude Opus 4 is the stronger model overall, scoring 43.1 to 33.7 on the Noometry Index. Qwen3 8B costs 97× less per token, which makes it the better buy when Claude Opus 4's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4 or Qwen3 8B?

Qwen3 8B is cheaper. It lists at $0.18 per million input tokens and $0.70 per million output tokens; Claude Opus 4 lists at $15 and $75.

Is Claude Opus 4 or Qwen3 8B better for coding?

Claude Opus 4 scores higher on coding benchmarks: 47.2 versus 34.0 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4 does, with 200K tokens against 131K.

How many benchmarks do Claude Opus 4 and Qwen3 8B share?

8 benchmarks have published results for both models. Claude Opus 4 has 56 scored results on Noometry and Qwen3 8B has 11.

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