Noometry

Model comparison

Claude Opus 4.6 vs o4-mini

Claude Opus 4.6 is the stronger model overall, scoring 58.2 to 41.6 on the Noometry Index. o4-mini costs 5.2× less per token, which makes it the better buy when Claude Opus 4.6's lead doesn't matter for your workload.

Last verified . 44 shared benchmarks.

Claude Opus 4.6 Anthropic

58.2

Rank #20 Confirmed

o4-mini OpenAI

41.6

Rank #132 Confirmed

Summary

  • They share 44 benchmarks with published results for both. Claude Opus 4.6 scores higher in 9 categories and o4-mini in 1 category; 10 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 4.6 leads 57.8 to 24.6.
  • The biggest single-benchmark swing is ARC-AGI-2: 69.2% for Claude Opus 4.6 and 6.1% for o4-mini.
  • o4-mini is cheaper at $1.10 / $4.40 per million input/output tokens, against $5 / $25 for Claude Opus 4.6.
  • Claude Opus 4.6 accepts more context: 1M tokens versus 200K.

Side by side

Claude Opus 4.6o4-mini
ProviderAnthropicOpenAI
Noometry Index58.241.6
Released2026-02-042025-04-16
WeightsProprietaryProprietary
Context window1M200K
Max output128K100K
Input $ / M tokens$5$1.10
Output $ / M tokens$25$4.40
Results tracked6860

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Category by category

Coding Claude Opus 4.6 leads

Claude Opus 4.6: 57.2 (#20), o4-mini: 40.9 (#127)

BenchmarkClaude Opus 4.6o4-mini
SWE-bench Verified (bash only)75.6%45%
GSO41.2%3.6%
WeirdML78%52.6%
LMArena Coding15361368
ALE-Bench996.5826.17
AlgoTune1.471.72
SWE-bench Verified78.7%—
FrontierCode26.6%—
Aider Polyglot—72%
LMArena WebDev1547—
SWE-bench Multilingual72%—
CadEval—62%

Agentic & Tool Use Claude Opus 4.6 leads

Claude Opus 4.6: 51.1 (#4), o4-mini: 32.6 (#61)

BenchmarkClaude Opus 4.6o4-mini
METR Time Horizons78.9%63.9%
Terminal-Bench79.8%—
APEX-Agents46.3%—
Berkeley Function Calling Leaderboard—53.2%
GDPval—25.3%
Remote Labor Index4.2%—
τ²-bench Banking27.3%—
Cybench93%—
DeepResearch Bench55.3%—
GBAEval44.1%—
LMArena Search1253—
Vending-Bench 28,018—

Reasoning Claude Opus 4.6 leads

Claude Opus 4.6: 57.8 (#23), o4-mini: 24.6 (#162)

BenchmarkClaude Opus 4.6o4-mini
ARC-AGI-269.2%6.1%
SimpleBench67.6%38.7%
Kagi LLM Benchmark83.6%67.6%
ARC-AGI-194%58.7%
Chess Puzzles17%26%
EnigmaEval7.6%9.2%
LMArena Hard Prompts15271351
Mystery Game Puzzles25%5%
DTBench91.2%77.6%
LMCA55.8%26.5%
Epoch Capabilities Index155.24145.64
ForecastBench6061.8
NYT Connections (extended)92.1%—
CritPt—0.6%
Thematic Generalization80.6%—
EBR-Bench12.7%—

Math Claude Opus 4.6 leads

Claude Opus 4.6: 63.0 (#31), o4-mini: 40.8 (#89)

BenchmarkClaude Opus 4.6o4-mini
FrontierMath (Tiers 1-3)66%36.1%
FrontierMath Tier 426.8%4.9%
OTIS Mock AIME 2024-202594.4%81.7%
LMArena Math15191389
FrontierMath (Feb 2025 set)40.7%24.8%
FrontierMath Tier 4 (v1)22.9%6.3%
MathArena Final-Answer Competitions78.5%—
ProofBench50%—
Omni-MATH—72%
MATH Level 5—97.8%

Knowledge Claude Opus 4.6 leads

Claude Opus 4.6: 61.9 (#26), o4-mini: 43.6 (#91)

BenchmarkClaude Opus 4.6o4-mini
GPQA Diamond90.5%79.6%
Humanity's Last Exam34.4%18.1%
SimpleQA Verified47%19.6%
Vectara Hallucination Rate12.2%18.6%
LMArena Expert15461343
MMLU-Pro—82%
Confabulations—15.8%
GPQA (HELM)—73.5%

Multimodal o4-mini leads

Claude Opus 4.6: 37.3 (#74), o4-mini: 40.2 (#49)

BenchmarkClaude Opus 4.6o4-mini
LMArena Vision13161194
GeoBench—64%
VPCT—57.5%
Furniture Assembly28.3%—
LMArena Document1507—

Multilingual Claude Opus 4.6 leads

Claude Opus 4.6: 57.9 (#6), o4-mini: 47.0 (#154)

BenchmarkClaude Opus 4.6o4-mini
LMArena Non-English14891337
LMArena Chinese15511354
LMArena French15131364
LMArena German15021336
LMArena Japanese14841308
LMArena Korean14641312
LMArena Russian14971334
LMArena Spanish15101347

Instruction Following Claude Opus 4.6 leads

Claude Opus 4.6: 79.5 (#4), o4-mini: 75.2 (#68)

BenchmarkClaude Opus 4.6o4-mini
LMArena Instruction Following15231321
IFEval—92.8%

Long Context Claude Opus 4.6 leads

Claude Opus 4.6: 48.1 (#13), o4-mini: 45.5 (#33)

BenchmarkClaude Opus 4.6o4-mini
LMArena Longer Query15201315
Fiction.LiveBench—77.8%
CL-bench20.7%—
CL-bench Life17%—

Writing & Preference Claude Opus 4.6 leads

Claude Opus 4.6: 73.5 (#10), o4-mini: 54.0 (#152)

BenchmarkClaude Opus 4.6o4-mini
LMArena Text15031353
LMArena Creative Writing15051294
LMArena Multi-Turn15131350
Short-Story Creative Writing—75%
EQ-Bench Creative Writing1809—
WildBench—85.4%
EQ-Bench 41223—

Frequently asked questions

Is Claude Opus 4.6 better than o4-mini?

Claude Opus 4.6 is the stronger model overall, scoring 58.2 to 41.6 on the Noometry Index. o4-mini costs 5.2× less per token, which makes it the better buy when Claude Opus 4.6's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.6 or o4-mini?

o4-mini is cheaper. It lists at $1.10 per million input tokens and $4.40 per million output tokens; Claude Opus 4.6 lists at $5 and $25.

Is Claude Opus 4.6 or o4-mini better for coding?

Claude Opus 4.6 scores higher on coding benchmarks: 57.2 versus 40.9 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 4.6 does, with 1M tokens against 200K.

How many benchmarks do Claude Opus 4.6 and o4-mini share?

44 benchmarks have published results for both models. Claude Opus 4.6 has 68 scored results on Noometry and o4-mini has 60.

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