Noometry

Model comparison

Claude 3 Opus vs Step 3.7 Flash

Step 3.7 Flash is the stronger model overall, scoring 37.3 to 29.5 on the Noometry Index.

Last verified . 0 shared benchmarks.

Claude 3 Opus Anthropic

29.5

Rank #310 Confirmed

Step 3.7 Flash StepFun

37.3

Rank #207 Reported

Summary

  • The widest gap is in math, where Step 3.7 Flash leads 42.9 to 14.8.
  • Step 3.7 Flash has downloadable open weights; the other is API-only.

Side by side

Claude 3 OpusStep 3.7 Flash
ProviderAnthropicStepFun
Noometry Index29.537.3
Released2024-02-292026-05-29
WeightsProprietaryOpen
Context window—256K
Max output—256K
Input $ / M tokens—$0.18
Output $ / M tokens—$1.11
Results tracked465

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Category by category

Coding Step 3.7 Flash leads

Claude 3 Opus: 32.9 (#267), Step 3.7 Flash: 40.0 (#150)

BenchmarkClaude 3 OpusStep 3.7 Flash
SciCode—40%
WeirdML19.2%—
BigCodeBench Instruct45.5%—
LiveBench Coding38.6%—
LMArena Coding1264—
BigCodeBench Complete57.4%—
ALE-Bench—694.12
HumanEval+77.4%—
MBPP+73.3%—

Agentic & Tool Use Not comparable

Claude 3 Opus: 24.6 (#116), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
Cybench10%—
METR Time Horizons29.5%—

Reasoning Step 3.7 Flash leads

Claude 3 Opus: 14.6 (#324), Step 3.7 Flash: 21.6 (#219)

BenchmarkClaude 3 OpusStep 3.7 Flash
SimpleBench23.5%—
NYT Connections (extended)—39.7%
CritPt—2.3%
Chess Puzzles5%—
EnigmaEval0.8%—
LiveBench Reasoning40.6%—
LMArena Hard Prompts1245—
DTBench61.6%—
LiveBench Data Analysis57.9%—
LMCA17%—
Epoch Capabilities Index126.91—
ForecastBench58.4—
LiveBench49.2%—
WinoGrande88.5%—

Math Step 3.7 Flash leads

Claude 3 Opus: 14.8 (#299), Step 3.7 Flash: 42.9 (#82)

BenchmarkClaude 3 OpusStep 3.7 Flash
MathArena Final-Answer Competitions—68.5%
OTIS Mock AIME 2024-20254.7%—
LiveBench Math43.6%—
LMArena Math1273—
MATH Level 537.5%—

Knowledge Not comparable

Claude 3 Opus: 24.5 (#267), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
GPQA Diamond47.2%—
SimpleQA Verified12.6%—
Confabulations22.7%—
LMArena Expert1223—
MMLU84.6%—

Multimodal Not comparable

Claude 3 Opus: 27.1 (#116), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
LMArena Vision1023—

Multilingual Not comparable

Claude 3 Opus: 41.4 (#207), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
LMArena Non-English1258—
LMArena Chinese1248—
LMArena French1275—
LMArena German1258—
LMArena Japanese1204—
LMArena Korean1187—
LMArena Russian1280—
LMArena Spanish1246—

Instruction Following Not comparable

Claude 3 Opus: 64.1 (#228), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
LiveBench Instruction Following63.9%—
LMArena Instruction Following1248—

Long Context Not comparable

Claude 3 Opus: 38.2 (#202), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
LMArena Longer Query1259—

Writing & Preference Not comparable

Claude 3 Opus: 47.2 (#213), Step 3.7 Flash: —

BenchmarkClaude 3 OpusStep 3.7 Flash
LMArena Text1262—
LMArena Creative Writing1235—
LMArena Multi-Turn1275—
LiveBench Language50.4%—

Frequently asked questions

Is Claude 3 Opus better than Step 3.7 Flash?

Step 3.7 Flash is the stronger model overall, scoring 37.3 to 29.5 on the Noometry Index.

Is Claude 3 Opus or Step 3.7 Flash better for coding?

Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 32.9 in the Noometry coding category.

How many benchmarks do Claude 3 Opus and Step 3.7 Flash share?

0 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Step 3.7 Flash has 5.

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