Noometry

Model comparison

Gemini 3.1 Pro Preview vs Qwen3.8 Flash

Gemini 3.1 Pro Preview has enough public results to be ranked (#20); Qwen3.8 Flash does not yet, so treat this comparison as directional.

Last verified . 1 shared benchmarks.

Gemini 3.1 Pro Preview Google

56.7

Rank #20 Confirmed

Qwen3.8 Flash Alibaba (Qwen)

35.1

Unranked Sparse

Summary

  • They share 1 benchmark with published results for both. Gemini 3.1 Pro Preview scores higher in 1 category and Qwen3.8 Flash in 0 categories; one gap is clear of the uncertainty.
  • The widest gap is in agentic & tool use, where Gemini 3.1 Pro Preview leads 37.7 to 31.2.
  • Qwen3.8 Flash is cheaper at $0.15 / $0.47 per million input/output tokens, against $2 / $12 for Gemini 3.1 Pro Preview.
  • Gemini 3.1 Pro Preview accepts more context: 1.05M tokens versus 1M.

Side by side

Gemini 3.1 Pro PreviewQwen3.8 Flash
ProviderGoogleAlibaba (Qwen)
Noometry Index56.735.1
Released2026-02-192026-08-26
WeightsProprietaryProprietary
Context window1.05M1M
Max output66K131K
Input $ / M tokens$2$0.15
Output $ / M tokens$12$0.47
Results tracked711

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Category by category

Coding Not comparable

Gemini 3.1 Pro Preview: 42.7 (#88), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
SWE-bench Verified75.6%—
DeepSWE11.7%—
LMArena WebDev1446—
SciCode58.9%—
GSO22.6%—
WeirdML72.1%—
LMArena Coding1483—
MirrorCode8.9%—
ALE-Bench1,161—
AlgoTune2.02—

Agentic & Tool Use Gemini 3.1 Pro Preview leads

Gemini 3.1 Pro Preview: 37.7 (#33), Qwen3.8 Flash: 31.2

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
GDP.pdf17%16.6%
Terminal-Bench80.2%—
APEX-Agents35.3%—
τ²-bench Banking26%—
DeepResearch Bench47.8%—
PostTrainBench22%—
BALROG57%—
ExploitBench26.1%—
GBAEval0.8%—
LMArena Search1211—
METR Time Horizons77%—
Vending-Bench 23,774—

Reasoning Not comparable

Gemini 3.1 Pro Preview: 71.7 (#9), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
ARC-AGI-277.1%—
SimpleBench79.6%—
NYT Connections (extended)97.4%—
ARC-AGI-198%—
CritPt17.7%—
Chess Puzzles55%—
EnigmaEval36.8%—
Thematic Generalization79.4%—
EBR-Bench14.3%—
LMArena Hard Prompts1484—
Mystery Game Puzzles34%—
DTBench97.1%—
LMCA53.8%—
Epoch Capabilities Index154.92—
ForecastBench59—

Math Not comparable

Gemini 3.1 Pro Preview: 61.8 (#28), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
FrontierMath (Tiers 1-3)59.6%—
FrontierMath Tier 426.8%—
MathArena Final-Answer Competitions86.5%—
OTIS Mock AIME 2024-202595.6%—
ProofBench26%—
LMArena Math1485—
FrontierMath (Feb 2025 set)36.9%—
FrontierMath Tier 4 (v1)16.7%—

Knowledge Not comparable

Gemini 3.1 Pro Preview: 71.8 (#3), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
GPQA Diamond94.4%—
Humanity's Last Exam46.4%—
SimpleQA Verified73.5%—
Vectara Hallucination Rate10.4%—
LMArena Expert1484—

Multimodal Not comparable

Gemini 3.1 Pro Preview: 38.1 (#60), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
LMArena Vision1296—
Blueprint-Bench 226.5%—
Furniture Assembly26.7%—
LMArena Document1444—

Multilingual Not comparable

Gemini 3.1 Pro Preview: 57.1 (#11), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
LMArena Non-English1475—
LMArena Chinese1528—
LMArena French1488—
LMArena German1491—
LMArena Japanese1494—
LMArena Korean1458—
LMArena Russian1496—
LMArena Spanish1480—

Instruction Following Not comparable

Gemini 3.1 Pro Preview: 77.1 (#31), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
LMArena Instruction Following1465—

Long Context Not comparable

Gemini 3.1 Pro Preview: 47.3 (#17), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
CL-bench20.8%—
CL-bench Life16.9%—
LMArena Longer Query1482—

Writing & Preference Not comparable

Gemini 3.1 Pro Preview: 66.3 (#36), Qwen3.8 Flash: —

BenchmarkGemini 3.1 Pro PreviewQwen3.8 Flash
LMArena Text1480—
LMArena Creative Writing1482—
EQ-Bench Creative Writing1491—
EQ-Bench 41142—
LMArena Multi-Turn1486—

Frequently asked questions

Is Gemini 3.1 Pro Preview better than Qwen3.8 Flash?

Gemini 3.1 Pro Preview has enough public results to be ranked (#20); Qwen3.8 Flash does not yet, so treat this comparison as directional.

Which is cheaper, Gemini 3.1 Pro Preview or Qwen3.8 Flash?

Qwen3.8 Flash is cheaper. It lists at $0.15 per million input tokens and $0.47 per million output tokens; Gemini 3.1 Pro Preview lists at $2 and $12.

Which has the bigger context window?

Gemini 3.1 Pro Preview does, with 1.05M tokens against 1M.

How many benchmarks do Gemini 3.1 Pro Preview and Qwen3.8 Flash share?

1 benchmark has published results for both models. Gemini 3.1 Pro Preview has 71 scored results on Noometry and Qwen3.8 Flash has 1.

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