Noometry

Model comparison

Claude Opus 4.5 vs MiniMax-M2.5

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 38.3 on the Noometry Index. MiniMax-M2.5 costs 19× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

Last verified . 32 shared benchmarks.

Claude Opus 4.5 Anthropic

50.5

Rank #47 Confirmed

MiniMax-M2.5 MiniMax

38.3

Rank #188 Confirmed

Summary

  • They share 32 benchmarks with published results for both. Claude Opus 4.5 scores higher in 9 categories and MiniMax-M2.5 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 4.5 leads 42.6 to 17.5.
  • The biggest single-benchmark swing is NYT Connections (extended): 52.5% for Claude Opus 4.5 and 16.8% for MiniMax-M2.5.
  • MiniMax-M2.5 is cheaper at $0.30 / $1.20 per million input/output tokens, against $5 / $25 for Claude Opus 4.5.
  • MiniMax-M2.5 accepts more context: 205K tokens versus 200K.
  • MiniMax-M2.5 has downloadable open weights; the other is API-only.

Side by side

Claude Opus 4.5MiniMax-M2.5
ProviderAnthropicMiniMax
Noometry Index50.538.3
Released2025-11-012026-02-12
WeightsProprietaryOpen
Context window200K205K
Max output64K131K
Input $ / M tokens$5$0.30
Output $ / M tokens$25$1.20
Results tracked6933

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Category by category

Coding Claude Opus 4.5 leads

Claude Opus 4.5: 54.8 (#27), MiniMax-M2.5: 48.1 (#58)

BenchmarkClaude Opus 4.5MiniMax-M2.5
SWE-bench Verified (bash only)76.8%75.8%
LMArena WebDev14941387
SWE-bench Multilingual70.7%68.3%
LMArena Coding15041381
ALE-Bench1,025618.17
SWE-bench Verified76.7%—
GSO26.5%—
WeirdML63.7%—
AlgoTune1.77—

Agentic & Tool Use Claude Opus 4.5 leads

Claude Opus 4.5: 47.3 (#12), MiniMax-M2.5: 30.4 (#77)

BenchmarkClaude Opus 4.5MiniMax-M2.5
Terminal-Bench63.1%42.7%
Vending-Bench 24,967-23.16
Berkeley Function Calling Leaderboard77.5%—
GDPval45.5%—
Remote Labor Index3.8%—
τ²-bench Airline84%—
τ²-bench Banking24.7%—
τ²-bench Retail79.6%—
τ²-bench Telecom92.3%—
Cybench82%—
DeepResearch Bench54.8%—
OSWorld66.3%—
BALROG43.5%—
LMArena Search1180—
METR Time Horizons75%—

Reasoning Claude Opus 4.5 leads

Claude Opus 4.5: 42.6 (#51), MiniMax-M2.5: 17.5 (#292)

BenchmarkClaude Opus 4.5MiniMax-M2.5
ARC-AGI-237.6%4.9%
Kagi LLM Benchmark80.2%55.2%
NYT Connections (extended)52.5%16.8%
ARC-AGI-180%63.7%
LMArena Hard Prompts14761372
Epoch Capabilities Index150.09146.68
SimpleBench62%—
Chess Puzzles12%—
EnigmaEval11.9%—
EBR-Bench14.3%—
Mystery Game Puzzles22%—
DTBench89.9%—
LMCA44.5%—
ForecastBench60.7—

Math Claude Opus 4.5 leads

Claude Opus 4.5: 38.6 (#132), MiniMax-M2.5: 26.9 (#253)

BenchmarkClaude Opus 4.5MiniMax-M2.5
ProofBench36%4%
LMArena Math14631378
FrontierMath (Tiers 1-3)34.4%—
FrontierMath Tier 44.9%—
OTIS Mock AIME 2024-202586.1%—
FrontierMath (Feb 2025 set)20.7%—
FrontierMath Tier 4 (v1)4.2%—

Knowledge Claude Opus 4.5 leads

Claude Opus 4.5: 56.5 (#44), MiniMax-M2.5: 39.2 (#135)

BenchmarkClaude Opus 4.5MiniMax-M2.5
Vectara Hallucination Rate10.9%9.1%
LMArena Expert14871379
GPQA Diamond86%—
Humanity's Last Exam25.2%—
SimpleQA Verified45.7%—

Multimodal Not comparable

Claude Opus 4.5: 31.4 (#107), MiniMax-M2.5: —

BenchmarkClaude Opus 4.5MiniMax-M2.5
GeoBench75%—
VPCT40%—
Furniture Assembly28.3%—
LMArena Document1462—

Multilingual Claude Opus 4.5 leads

Claude Opus 4.5: 54.3 (#47), MiniMax-M2.5: 47.1 (#152)

BenchmarkClaude Opus 4.5MiniMax-M2.5
LMArena Non-English14381338
LMArena Chinese14701393
LMArena French14711362
LMArena German14491362
LMArena Japanese14161171
LMArena Korean14241232
LMArena Russian14471358
LMArena Spanish14581354

Instruction Following Claude Opus 4.5 leads

Claude Opus 4.5: 77.5 (#19), MiniMax-M2.5: 71.5 (#148)

BenchmarkClaude Opus 4.5MiniMax-M2.5
LMArena Instruction Following14781353

Long Context Claude Opus 4.5 leads

Claude Opus 4.5: 46.5 (#22), MiniMax-M2.5: 37.5 (#216)

BenchmarkClaude Opus 4.5MiniMax-M2.5
CL-bench21.1%11.4%
LMArena Longer Query14801366
CL-bench Life—6.3%

Writing & Preference Claude Opus 4.5 leads

Claude Opus 4.5: 68.1 (#28), MiniMax-M2.5: 53.9 (#153)

BenchmarkClaude Opus 4.5MiniMax-M2.5
LMArena Text14511359
LMArena Creative Writing14451331
EQ-Bench Creative Writing16871361
LMArena Multi-Turn14661364

Frequently asked questions

Is Claude Opus 4.5 better than MiniMax-M2.5?

Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 38.3 on the Noometry Index. MiniMax-M2.5 costs 19× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 4.5 or MiniMax-M2.5?

MiniMax-M2.5 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Claude Opus 4.5 lists at $5 and $25.

Is Claude Opus 4.5 or MiniMax-M2.5 better for coding?

Claude Opus 4.5 scores higher on coding benchmarks: 54.8 versus 48.1 in the Noometry coding category.

Which has the bigger context window?

MiniMax-M2.5 does, with 205K tokens against 200K.

How many benchmarks do Claude Opus 4.5 and MiniMax-M2.5 share?

32 benchmarks have published results for both models. Claude Opus 4.5 has 69 scored results on Noometry and MiniMax-M2.5 has 33.

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