Noometry

Model comparison

Claude Opus 4.1 vs GPT-4o mini

Claude Opus 4.1 is the stronger model overall, scoring 40.8 to 25.4 on the Noometry Index. GPT-4o mini costs 114× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Last verified . 30 shared benchmarks.

Claude Opus 4.1 Anthropic

40.8

Rank #136 Confirmed

GPT-4o mini OpenAI

25.4

Rank #337 Confirmed

Summary

  • They share 30 benchmarks with published results for both. Claude Opus 4.1 scores higher in 10 categories and GPT-4o mini in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Claude Opus 4.1 leads 41.9 to 17.7.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 68.9% for Claude Opus 4.1 and 6.9% for GPT-4o mini.
  • GPT-4o mini is cheaper at $0.15 / $0.60 per million input/output tokens, against $15 / $75 for Claude Opus 4.1.
  • Claude Opus 4.1 accepts more context: 200K tokens versus 128K.

Side by side

Claude Opus 4.1GPT-4o mini
ProviderAnthropicOpenAI
Noometry Index40.825.4
Released2025-08-052024-07-18
WeightsProprietaryProprietary
Context window200K128K
Max output32K16K
Input $ / M tokens$15$0.15
Output $ / M tokens$75$0.60
Results tracked4860

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Category by category

Coding Claude Opus 4.1 leads

Claude Opus 4.1: 44.3 (#69), GPT-4o mini: 21.6 (#330)

BenchmarkClaude Opus 4.1GPT-4o mini
WeirdML45.9%11.8%
LMArena Coding14791290
SWE-bench Verified73.3%—
Aider Polyglot—3.6%
LMArena WebDev1390—
BigCodeBench Instruct—46.1%
LiveBench Coding—43.1%
BigCodeBench Complete—57.4%
ALE-Bench674.77—
AlgoTune1.34—
HumanEval+—83.5%
MBPP+—72.2%

Agentic & Tool Use Claude Opus 4.1 leads

Claude Opus 4.1: 34.8 (#38), GPT-4o mini: 27.2 (#95)

BenchmarkClaude Opus 4.1GPT-4o mini
Terminal-Bench38%—
GDPval43.6%—
Cybench42%—
DeepResearch Bench48.3%—
BALROG—17.4%
LMArena Search1148—
METR Time Horizons66.8%—

Reasoning Claude Opus 4.1 leads

Claude Opus 4.1: 31.6 (#70), GPT-4o mini: 8.7 (#343)

BenchmarkClaude Opus 4.1GPT-4o mini
SimpleBench60%10.7%
Chess Puzzles7%0%
LMArena Hard Prompts14431267
Mystery Game Puzzles21%12%
DTBench80%54.4%
LMCA37.1%10.4%
Epoch Capabilities Index144.11126.56
ARC-AGI-2—0%
Kagi LLM Benchmark—28.8%
EnigmaEval7.2%—
EBR-Bench7.9%—
LiveBench Reasoning—32.8%
LiveBench Data Analysis—50%
ForecastBench62—
LiveBench—41.3%
PIQA—88.7%

Math Claude Opus 4.1 leads

Claude Opus 4.1: 22.0 (#267), GPT-4o mini: 9.9 (#307)

BenchmarkClaude Opus 4.1GPT-4o mini
FrontierMath (Tiers 1-3)12.6%0.7%
OTIS Mock AIME 2024-202568.9%6.9%
LMArena Math14301267
FrontierMath Tier 42.4%—
Omni-MATH—28%
LiveBench Math—36.3%
MATH Level 5—52.6%
FrontierMath (Feb 2025 set)7.2%—
FrontierMath Tier 4 (v1)4.2%—
GSM8K—91.3%

Knowledge Claude Opus 4.1 leads

Claude Opus 4.1: 41.9 (#93), GPT-4o mini: 17.7 (#279)

BenchmarkClaude Opus 4.1GPT-4o mini
GPQA Diamond77.3%37.7%
Confabulations17.1%37.2%
LMArena Expert14391235
Humanity's Last Exam11.5%—
SimpleQA Verified—8.3%
MMLU-Pro—60.3%
Vectara Hallucination Rate11.8%—
GPQA (HELM)—36.8%
BoolQ—88.7%
MMLU—81.8%

Multimodal Too close to call

Claude Opus 4.1: 26.2 (#114), GPT-4o mini: 25.3 (#117)

BenchmarkClaude Opus 4.1GPT-4o mini
VPCT35%34%
LMArena Vision—1066
Video-MME—64.8%
GeoBench—64%

Multilingual Claude Opus 4.1 leads

Claude Opus 4.1: 52.1 (#90), GPT-4o mini: 42.2 (#194)

BenchmarkClaude Opus 4.1GPT-4o mini
LMArena Non-English14051266
LMArena Chinese14271264
LMArena French14321296
LMArena German14121272
LMArena Japanese13781216
LMArena Korean13811195
LMArena Russian14211275
LMArena Spanish14481276

Instruction Following Claude Opus 4.1 leads

Claude Opus 4.1: 75.8 (#53), GPT-4o mini: 62.1 (#234)

BenchmarkClaude Opus 4.1GPT-4o mini
LMArena Instruction Following14361259
LiveBench Instruction Following—56.8%
IFEval—78.2%

Long Context Claude Opus 4.1 leads

Claude Opus 4.1: 44.5 (#60), GPT-4o mini: 39.1 (#181)

BenchmarkClaude Opus 4.1GPT-4o mini
LMArena Longer Query14551289

Writing & Preference Claude Opus 4.1 leads

Claude Opus 4.1: 62.6 (#70), GPT-4o mini: 39.7 (#243)

BenchmarkClaude Opus 4.1GPT-4o mini
LMArena Text14191286
LMArena Creative Writing14121268
Short-Story Creative Writing84.7%67.2%
LMArena Multi-Turn14441285
EQ-Bench Creative Writing—873
WildBench—79.1%
LiveBench Language—28.6%

Frequently asked questions

Is Claude Opus 4.1 better than GPT-4o mini?

Claude Opus 4.1 is the stronger model overall, scoring 40.8 to 25.4 on the Noometry Index. GPT-4o mini costs 114× less per token, which makes it the better buy when Claude Opus 4.1's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.1 or GPT-4o mini?

GPT-4o mini is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Claude Opus 4.1 lists at $15 and $75.

Is Claude Opus 4.1 or GPT-4o mini better for coding?

Claude Opus 4.1 scores higher on coding benchmarks: 44.3 versus 21.6 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4.1 does, with 200K tokens against 128K.

How many benchmarks do Claude Opus 4.1 and GPT-4o mini share?

30 benchmarks have published results for both models. Claude Opus 4.1 has 48 scored results on Noometry and GPT-4o mini has 60.

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