Noometry

Model comparison

Claude Opus 5.5 vs MiniMax-M2

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 37.4 on the Noometry Index. MiniMax-M2 costs 15× less per token, which makes it the better buy when Claude Opus 5.5's lead doesn't matter for your workload.

Last verified . 17 shared benchmarks.

Claude Opus 5.5 Anthropic

68.6

Rank #3 Confirmed

MiniMax-M2 MiniMax

37.4

Rank #204 Confirmed

Summary

  • They share 17 benchmarks with published results for both. Claude Opus 5.5 scores higher in 9 categories and MiniMax-M2 in 0 categories; 9 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5.5 leads 80.2 to 19.4.
  • The biggest single-benchmark swing is NYT Connections (extended): 88.5% for Claude Opus 5.5 and 14.8% for MiniMax-M2.
  • MiniMax-M2 is cheaper at $0.30 / $1.20 per million input/output tokens, against $4 / $20 for Claude Opus 5.5.
  • Claude Opus 5.5 accepts more context: 1M tokens versus 205K.
  • MiniMax-M2 has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5MiniMax-M2
ProviderAnthropicMiniMax
Noometry Index68.637.4
Released2026-09-222025-10-27
WeightsProprietaryOpen
Context window1M205K
Max output128K131K
Input $ / M tokens$4$0.30
Output $ / M tokens$20$1.20
Results tracked4421

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Category by category

Coding Claude Opus 5.5 leads

Claude Opus 5.5: 71.9 (#3), MiniMax-M2: 39.3 (#159)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena WebDev18131297
LMArena Coding15471370
FrontierCode54.6%—
SWE-bench Verified (bash only)—61%
CursorBench57.8%—
FrontierSWE62.3%—
SciCode66.9%—
MirrorCode77.4%—
ALE-Bench2,147—

Agentic & Tool Use Claude Opus 5.5 leads

Claude Opus 5.5: 45.3 (#15), MiniMax-M2: 25.1 (#109)

BenchmarkClaude Opus 5.5MiniMax-M2
Vending-Bench 29,235160.6
Terminal-Bench—30%
APEX-Agents73.5%—
GDP.pdf30.6%—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 80.2 (#3), MiniMax-M2: 19.4 (#258)

BenchmarkClaude Opus 5.5MiniMax-M2
NYT Connections (extended)88.5%14.8%
LMArena Hard Prompts15351357
ARC-AGI-293.3%—
Kagi LLM Benchmark—57.8%
ARC-AGI-198.5%—
CritPt31.7%—
EBR-Bench71.4%—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—
Epoch Capabilities Index167.33—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 91.8 (#3), MiniMax-M2: 37.3 (#160)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Math15061352
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
OTIS Mock AIME 2024-2025100%—
ProofBench100%—
FrontierMath Erdős2.9%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.4 (#10), MiniMax-M2: 37.0 (#163)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Expert15471337
GPQA Diamond90.6%—
SimpleQA Verified72.2%—

Multimodal Not comparable

Claude Opus 5.5: 57.8 (#1), MiniMax-M2: —

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Vision1321—
Blueprint-Bench 251.2%—
Furniture Assembly83.3%—

Multilingual Claude Opus 5.5 leads

Claude Opus 5.5: 59.1 (#2), MiniMax-M2: 45.3 (#171)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Non-English15071313
LMArena Chinese15881366
LMArena French15141335
LMArena Russian15201331
LMArena Spanish15071326
LMArena German—1355

Instruction Following Claude Opus 5.5 leads

Claude Opus 5.5: 80.0 (#3), MiniMax-M2: 70.2 (#166)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Instruction Following15371328

Long Context Claude Opus 5.5 leads

Claude Opus 5.5: 47.1 (#19), MiniMax-M2: 40.5 (#153)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Longer Query15321331

Writing & Preference Claude Opus 5.5 leads

Claude Opus 5.5: 78.2 (#3), MiniMax-M2: 53.0 (#162)

BenchmarkClaude Opus 5.5MiniMax-M2
LMArena Text15151340
LMArena Creative Writing15331286
LMArena Multi-Turn14991361
EQ-Bench Creative Writing2050—

Frequently asked questions

Is Claude Opus 5.5 better than MiniMax-M2?

Claude Opus 5.5 is the stronger model overall, scoring 68.6 to 37.4 on the Noometry Index. MiniMax-M2 costs 15× less per token, which makes it the better buy when Claude Opus 5.5's lead doesn't matter for your workload.

Which is cheaper, Claude Opus 5.5 or MiniMax-M2?

MiniMax-M2 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Claude Opus 5.5 lists at $4 and $20.

Is Claude Opus 5.5 or MiniMax-M2 better for coding?

Claude Opus 5.5 scores higher on coding benchmarks: 71.9 versus 39.3 in the Noometry coding category.

Which has the bigger context window?

Claude Opus 5.5 does, with 1M tokens against 205K.

How many benchmarks do Claude Opus 5.5 and MiniMax-M2 share?

17 benchmarks have published results for both models. Claude Opus 5.5 has 44 scored results on Noometry and MiniMax-M2 has 21.

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