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Claude Opus 5.5 vs MiniMax M3

Claude Opus 5.5 leads the LLM Stats Score 59.7 to 41.2. MiniMax M3 is 16.5x cheaper per token.

Anthropic · MiniMax · Updated for 2026

Which is better?

Claude Opus 5.5 leads the overall LLM Stats Score 59.7 to 41.2, ranking #1 overall.

In the 3 individual benchmarks reported for both models, Claude Opus 5.5 wins 3; this is a narrower head-to-head signal than the composite indexes.

On price, MiniMax M3 is roughly 16.5x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

Claude Opus 5.5 also accepts a larger context window (1,000,000 input tokens), making it the stronger choice for long documents and large codebases.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Claude Opus 5.5

  • overall performance matters — it scores 59.7 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 3 of 3 exact shared results
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Sep 2026

Choose MiniMax M3

  • cost matters — it's about 16.5x cheaper per token
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude Opus 5.5
Anthropic
MiniMax M3
MiniMax
Core performance indexes
LLM Stats Score
59.7
#1
41.2
#58
Reasoning
57.8
#1
41.2
#53
Coding
51.7
#1
31.6
#46
Agents
44.5
#2
25.9
#53
Cost, coverage & limits
Benchmark wins
3 of 3
0 of 3
Input price
$4.00 / M
$0.28 / M
Output price
$20.00 / M
$1.10 / M
Context window
1,000,000
524,288

Capability indexes

Additional strengths measured across groups of related public benchmarks

4 shared
Index
Claude Opus 5.5
MiniMax M3
Math
42.5#5
25.4#112
Vision
42.8#1
25.6#46
Tool use
32.9#2
19.2#61
Multimodal
42.5#1
28.6#33
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

31 reported for Claude Opus 5.5 · 35 for MiniMax M3

3 shared

Claude Opus 5.5 outperforms in 3 benchmarks (FrontierCode 1.1, OfficeQA Pro, SWE-Bench Pro), while MiniMax M3 is better at 0 benchmarks.

Claude Opus 5.5 significantly outperforms across most benchmarks.

Tue Sep 22 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

MiniMax M3 costs less

For input processing, Claude Opus 5.5 ($4.00/1M tokens) is 14.3x more expensive than MiniMax M3 ($0.28/1M tokens).

For output processing, Claude Opus 5.5 ($20.00/1M tokens) is 18.2x more expensive than MiniMax M3 ($1.10/1M tokens).

In conclusion, Claude Opus 5.5 is more expensive than MiniMax M3.*

* Using a 3:1 ratio of input to output tokens

Lowest available price from all providers
Tue Sep 22 2026 • llm-stats.com
Anthropic
Claude Opus 5.5
Input tokens$4.00
Output tokens$20.00
Best providerAnthropic
MiniMax
MiniMax M3
Input tokens$0.28
Output tokens$1.10
Best providerDeepinfra
Notice missing or incorrect data?Start an Issue→

Context Window

Maximum input and output token capacity

Claude Opus 5.5 accepts 1,000,000 input tokens compared to MiniMax M3's 524,288 tokens. MiniMax M3 can generate longer responses up to 524,288 tokens, while Claude Opus 5.5 is limited to 128,000 tokens.

Anthropic
Claude Opus 5.5
Input1,000,000 tokens
Output128,000 tokens
MiniMax
MiniMax M3
Input524,288 tokens
Output524,288 tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 5.5 and MiniMax M3 support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

Claude Opus 5.5

Text
Images
Audio
Video

MiniMax M3

Text
Images
Audio
Video

License

Usage and distribution terms

Claude Opus 5.5 is licensed under a proprietary license, while MiniMax M3 uses MIT.

License differences may affect how you can use these models in commercial or open-source projects.

Claude Opus 5.5

Proprietary

Closed source

MiniMax M3

MIT

Open weights

Release Timeline

When each model was launched

Claude Opus 5.5 was released on 2026-09-22, while MiniMax M3 was released on 2026-06-01.

Claude Opus 5.5 is 4 months newer than MiniMax M3.

Claude Opus 5.5

Sep 22, 2026

0 days ago

3mo newer
MiniMax M3

Jun 1, 2026

3 months ago

Knowledge Cutoff

When training data ends

Claude Opus 5.5 has a documented knowledge cutoff of 2026-06-01, while MiniMax M3's cutoff date is not specified.

We can confirm Claude Opus 5.5's training data extends to 2026-06-01, but cannot make a direct comparison without MiniMax M3's cutoff date.

Claude Opus 5.5

Jun 2026

MiniMax M3

—

Provider Availability

Claude Opus 5.5 is available from Anthropic. MiniMax M3 is available from DeepInfra, Fireworks, MiniMax, Novita, Together.

Claude Opus 5.5

anthropic logo
Anthropic
Input Price:Input: $4.00/1MOutput Price:Output: $20.00/1M

MiniMax M3

deepinfra logo
Deepinfra
Input Price:Input: $0.28/1MOutput Price:Output: $1.10/1M
fireworks logo
Fireworks
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
minimax logo
MiniMax
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
novita logo
Novita
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
together logo
Together
Input Price:Input: $0.30/1MOutput Price:Output: $1.20/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Claude Opus 5.5 and MiniMax M3 side-by-side, then vote on the output you prefer.

Claude Opus 5.5
✓ Preferred
MiniMax M3
Open in Playground

FAQ

Common questions about Claude Opus 5.5 vs MiniMax M3.

Which is better, Claude Opus 5.5 or MiniMax M3?

Claude Opus 5.5 leads the LLM Stats Score 59.7 to 41.2. Claude Opus 5.5 is made by Anthropic and MiniMax M3 is made by MiniMax. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Claude Opus 5.5 compare to MiniMax M3 in benchmarks?

Claude Opus 5.5 scores BenchCAD (with Python tool): 96.2%, Global-MMLU: 94.3%, SWE-bench Multilingual: 93.9%, MILU: 93.1%, ArXivMath: 91.2%. MiniMax M3 scores OmniDocBench 1.5: 91.6%, SpreadSheetBench-v1: 89.3%, USAMO 2026: 85.7%, Video-MME: 85.4%, VideoMMMU: 84.6%.

Is Claude Opus 5.5 cheaper than MiniMax M3?

MiniMax M3 is 14.3x cheaper for input tokens. Claude Opus 5.5 costs $4.00/M input and $20.00/M output via anthropic. MiniMax M3 costs $0.28/M input and $1.10/M output via deepinfra.

What are the context window sizes for Claude Opus 5.5 and MiniMax M3?

Claude Opus 5.5 supports 1.0M tokens and MiniMax M3 supports 524K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude Opus 5.5 and MiniMax M3?

Key differences include LLM Stats Score (59.7 vs 41.2), context window (1.0M vs 524K), input pricing ($4.00 vs $0.28/M), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 5.5 and MiniMax M3?

Claude Opus 5.5 is developed by Anthropic and MiniMax M3 is developed by MiniMax.

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