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Claude Opus 4.5 vs MiniMax M3.1 Flash

MiniMax M3.1 Flash leads the LLM Stats Score 48.7 to 37.9. MiniMax M3.1 Flash is 38.1x cheaper per token.

Anthropic · MiniMax · Updated for 2026

Which is better?

MiniMax M3.1 Flash leads the overall LLM Stats Score 48.7 to 37.9, ranking #29 overall.

On price, MiniMax M3.1 Flash is roughly 38.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.

MiniMax M3.1 Flash 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 4.5

  • you want predictable pricing at $5.00/M input and $25.00/M output

Choose MiniMax M3.1 Flash

  • overall performance matters — it scores 48.7 and ranks #29 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • cost matters — it's about 38.1x cheaper per token
  • you process long inputs — it offers a 1,000,000 token context window
  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Claude Opus 4.5
Anthropic
MiniMax M3.1 Flash
MiniMax
Core performance indexes
LLM Stats Score
37.9
#84
48.7
#29
Reasoning
39.8
#70
45.9
#32
Coding
27.6
#75
37.9
#23
Agents
17.4
#95
35.7
#22
Cost, coverage & limits
Benchmark wins
—
—
Input price
$5.00 / M
$0.15 / M
Output price
$25.00 / M
$0.60 / M
Context window
200,000
1,000,000

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
Claude Opus 4.5
MiniMax M3.1 Flash
Vision
20.6#84
28.9#42
Tool use
20.7#64
27.1#27
Multimodal
19.2#90
30.2#38
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

11 reported for Claude Opus 4.5 · 15 for MiniMax M3.1 Flash

No common benchmarks found

Claude Opus 4.5 and MiniMax M3.1 Flashdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Pricing Analysis

Price comparison per million tokens

MiniMax M3.1 Flash costs less

For input processing, Claude Opus 4.5 ($5.00/1M tokens) is 33.3x more expensive than MiniMax M3.1 Flash ($0.15/1M tokens).

For output processing, Claude Opus 4.5 ($25.00/1M tokens) is 41.7x more expensive than MiniMax M3.1 Flash ($0.60/1M tokens).

In conclusion, Claude Opus 4.5 is more expensive than MiniMax M3.1 Flash.*

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

Lowest available price from all providers
Thu Oct 22 2026 • llm-stats.com
Anthropic
Claude Opus 4.5
Input tokens$5.00
Output tokens$25.00
Best providerAnthropic
MiniMax
MiniMax M3.1 Flash
Input tokens$0.15
Output tokens$0.60
Best providerMiniMax
Notice missing or incorrect data?

Context Window

Maximum input and output token capacity

MiniMax M3.1 Flash accepts 1,000,000 input tokens compared to Claude Opus 4.5's 200,000 tokens. MiniMax M3.1 Flash can generate longer responses up to 524,288 tokens, while Claude Opus 4.5 is limited to 64,000 tokens.

Anthropic
Claude Opus 4.5
Input200,000 tokens
Output64,000 tokens
MiniMax
MiniMax M3.1 Flash
Input1,000,000 tokens
Output524,288 tokens
Thu Oct 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Claude Opus 4.5 and MiniMax M3.1 Flash support multimodal inputs.

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

Claude Opus 4.5

Text
Images
Audio
Video

MiniMax M3.1 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

Claude Opus 4.5

Proprietary

Closed source

MiniMax M3.1 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

Claude Opus 4.5 was released on 2025-11-24, while MiniMax M3.1 Flash was released on 2026-10-19.

MiniMax M3.1 Flash is 11 months newer than Claude Opus 4.5.

Claude Opus 4.5

Nov 24, 2025

10 months ago

MiniMax M3.1 Flash

Oct 19, 2026

0 days ago

10mo newer

Knowledge Cutoff

When training data ends

Claude Opus 4.5 has a documented knowledge cutoff of 2025-03-31, while MiniMax M3.1 Flash's cutoff date is not specified.

We can confirm Claude Opus 4.5's training data extends to 2025-03-31, but cannot make a direct comparison without MiniMax M3.1 Flash's cutoff date.

Claude Opus 4.5

Mar 2025

MiniMax M3.1 Flash

—

Provider Availability

Claude Opus 4.5 is available from Anthropic. MiniMax M3.1 Flash is available from MiniMax.

Claude Opus 4.5

anthropic logo
Anthropic
Input Price:Input: $5.00/1MOutput Price:Output: $25.00/1M

MiniMax M3.1 Flash

minimax logo
MiniMax
Input Price:Input: $0.15/1MOutput Price:Output: $0.60/1M
* Prices shown are per million tokens

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Claude Opus 4.5 and MiniMax M3.1 Flash side-by-side, then vote on the output you prefer.

Claude Opus 4.5
✓ Preferred
MiniMax M3.1 Flash
Open in Playground

FAQ

Common questions about Claude Opus 4.5 vs MiniMax M3.1 Flash.

Which is better, Claude Opus 4.5 or MiniMax M3.1 Flash?

MiniMax M3.1 Flash leads the LLM Stats Score 48.7 to 37.9. Claude Opus 4.5 is made by Anthropic and MiniMax M3.1 Flash 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 4.5 compare to MiniMax M3.1 Flash in benchmarks?

Claude Opus 4.5 scores Tau2 Telecom: 98.2%, MMMLU: 90.8%, Tau2 Retail: 88.9%, GPQA: 87.0%, SWE-Bench Verified: 80.9%. MiniMax M3.1 Flash scores BabyVision: 91.0%, CharXiv-R: 82.5%, CyberGym: 82.2%, BankerToolBench: 76.2%, DeepSWE 1.1: 73.7%.

Is Claude Opus 4.5 cheaper than MiniMax M3.1 Flash?

MiniMax M3.1 Flash is 33.3x cheaper for input tokens. Claude Opus 4.5 costs $5.00/M input and $25.00/M output via anthropic. MiniMax M3.1 Flash costs $0.15/M input and $0.60/M output via minimax.

What are the context window sizes for Claude Opus 4.5 and MiniMax M3.1 Flash?

Claude Opus 4.5 supports 200K tokens and MiniMax M3.1 Flash supports 1.0M 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 4.5 and MiniMax M3.1 Flash?

Key differences include LLM Stats Score (37.9 vs 48.7), context window (200K vs 1.0M), input pricing ($5.00 vs $0.15/M). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude Opus 4.5 and MiniMax M3.1 Flash?

Claude Opus 4.5 is developed by Anthropic and MiniMax M3.1 Flash is developed by MiniMax.

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