Noometry

Model comparison

Claude Mythos Preview vs Gemini 3.6 Flash

Gemini 3.6 Flash has enough public results to be ranked (#33); Claude Mythos Preview does not yet, so treat this comparison as directional.

Last verified . 0 shared benchmarks.

Claude Mythos Preview Anthropic

41.2

Unranked Sparse

Gemini 3.6 Flash Google

54.1

Rank #33 Confirmed

Summary

  • The widest gap is in agentic & tool use, where Claude Mythos Preview leads 41.4 to 32.3.

Side by side

Claude Mythos PreviewGemini 3.6 Flash
ProviderAnthropicGoogle
Noometry Index41.254.1
Released2026-04-072026-07-21
WeightsProprietaryProprietary
Context window—1.05M
Max output—66K
Input $ / M tokens—$0.75
Output $ / M tokens—$3.75
Results tracked246

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Category by category

Coding Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 50.0 (#48)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
DeepSWE—46.7%
FrontierCode—34.4%
LMArena WebDev—1538
SciCode—52.7%
WeirdML—56.1%
LMArena Coding—1491
ALE-Bench—715.52

Agentic & Tool Use Claude Mythos Preview leads

Claude Mythos Preview: 41.4, Gemini 3.6 Flash: 32.3 (#65)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
APEX-Agents—46.9%
ExploitBench73.8%—
GDP.pdf—14%
METR Time Horizons85.2%—

Reasoning Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 58.8 (#22)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
ARC-AGI-2—60.4%
NYT Connections (extended)—89%
ARC-AGI-1—91.2%
CritPt—10.6%
Chess Puzzles—43%
LMArena Hard Prompts—1485
Mystery Game Puzzles—30%
DTBench—95.5%
LMCA—44.9%
Epoch Capabilities Index—154.25

Math Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 57.3 (#40)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
FrontierMath (Tiers 1-3)—58.9%
FrontierMath Tier 4—22%
MathArena Final-Answer Competitions—70.8%
OTIS Mock AIME 2024-2025—94.2%
ProofBench—36%
LMArena Math—1505

Knowledge Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 67.8 (#8)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
GPQA Diamond—94.1%
SimpleQA Verified—66.2%
LMArena Expert—1488

Multimodal Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 38.5 (#64)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
LMArena Vision—1298
Blueprint-Bench 2—31.2%
Furniture Assembly—23.3%
LMArena Document—1456

Multilingual Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 56.5 (#19)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
LMArena Non-English—1469
LMArena Chinese—1531
LMArena French—1504
LMArena German—1478
LMArena Japanese—1476
LMArena Korean—1431
LMArena Russian—1487
LMArena Spanish—1475

Instruction Following Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 77.0 (#33)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
LMArena Instruction Following—1466

Long Context Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 45.1 (#50)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
LMArena Longer Query—1474

Writing & Preference Not comparable

Claude Mythos Preview: —, Gemini 3.6 Flash: 68.2 (#27)

BenchmarkClaude Mythos PreviewGemini 3.6 Flash
LMArena Text—1479
LMArena Creative Writing—1465
EQ-Bench Creative Writing—1604
LMArena Multi-Turn—1481

Frequently asked questions

Is Claude Mythos Preview better than Gemini 3.6 Flash?

Gemini 3.6 Flash has enough public results to be ranked (#33); Claude Mythos Preview does not yet, so treat this comparison as directional.

How many benchmarks do Claude Mythos Preview and Gemini 3.6 Flash share?

0 benchmarks have published results for both models. Claude Mythos Preview has 2 scored results on Noometry and Gemini 3.6 Flash has 46.

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