Noometry

Model comparison

Claude Opus 5.5 vs phi-3-medium 14B

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 29.7 on the Noometry Index.

Last verified . 2 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

phi-3-medium 14B Microsoft

29.7

Rank #306 Reported

Summary

  • They share 2 benchmarks with published results for both. Claude Opus 5.5 scores higher in 3 categories and phi-3-medium 14B in 0 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Opus 5.5 leads 91.8 to 27.3.
  • The biggest single-benchmark swing is GPQA Diamond: 90.6% for Claude Opus 5.5 and 27.6% for phi-3-medium 14B.
  • phi-3-medium 14B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5phi-3-medium 14B
ProviderAnthropicMicrosoft
Noometry Index68.629.7
Released2026-09-222024-04-23
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked4413

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), phi-3-medium 14B: 36.8 (#201)

BenchmarkClaude Opus 5.5phi-3-medium 14B
FrontierCode54.6%—
CursorBench57.8%—
LMArena WebDev1813—
FrontierSWE62.3%—
SciCode66.9%—
BigCodeBench Instruct—37.6%
LMArena Coding1547—
MirrorCode77.4%—
BigCodeBench Complete—48.7%
ALE-Bench2,147—

Agentic & Tool Use Not comparable

Claude Opus 5.5: 45.3 (#15), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
APEX-Agents73.5%—
GDP.pdf30.6%—
Vending-Bench 29,235—

Reasoning Not comparable

Claude Opus 5.5: 80.2 (#3), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
Epoch Capabilities Index167.33121.23
ARC-AGI-293.3%—
NYT Connections (extended)88.5%—
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
LMArena Hard Prompts1535—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
Adversarial NLI—55.8%
BIG-Bench Hard—81.4%
HellaSwag—82.4%
WinoGrande—81.5%

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), phi-3-medium 14B: 27.3 (#250)

BenchmarkClaude Opus 5.5phi-3-medium 14B
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
LMArena Math1506—
MATH Level 5—17.6%
FrontierMath Erdős2.9%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), phi-3-medium 14B: 9.1 (#306)

BenchmarkClaude Opus 5.5phi-3-medium 14B
GPQA Diamond90.6%27.6%
SimpleQA Verified72.2%—
LMArena Expert1547—
ARC (AI2) Challenge—91.6%
MMLU—78%
OpenBookQA—87.4%
TriviaQA—73.9%

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Not comparable

Claude Opus 5.5: 59.1 (#2), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
LMArena Non-English1507—
LMArena Chinese1588—
LMArena French1514—
LMArena Russian1520—
LMArena Spanish1507—

Instruction Following Not comparable

Claude Opus 5.5: 80.0 (#3), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
LMArena Instruction Following1537—

Long Context Not comparable

Claude Opus 5.5: 47.1 (#19), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
LMArena Longer Query1532—

Writing & Preference Not comparable

Claude Opus 5.5: 78.2 (#3), phi-3-medium 14B: —

BenchmarkClaude Opus 5.5phi-3-medium 14B
LMArena Text1515—
LMArena Creative Writing1533—
EQ-Bench Creative Writing2050—
LMArena Multi-Turn1499—

Frequently asked questions

Is Claude Opus 5.5 better than phi-3-medium 14B?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 29.7 on the Noometry Index.

Is Claude Opus 5.5 or phi-3-medium 14B better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 36.8 in the Noometry coding category.

How many benchmarks do Claude Opus 5.5 and phi-3-medium 14B share?

2 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and phi-3-medium 14B has 13.

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