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MiniMax M3.1 Flash vs Seed 2.1 Pro

MiniMax M3.1 Flash leads the LLM Stats Score 48.5 to 45.8.

MiniMax · ByteDance · Updated for 2026

Which is better?

MiniMax M3.1 Flash leads the overall LLM Stats Score 48.5 to 45.8, ranking #29 overall.

In the 6 individual benchmarks reported for both models, MiniMax M3.1 Flash wins 4; this is a narrower head-to-head signal than the composite indexes.

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

Choose MiniMax M3.1 Flash

  • overall performance matters — it scores 48.5 and ranks #29 on LLM Stats
  • your work emphasizes coding and agents — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 4 of 6 exact shared results
  • you want the most recent training data — it shipped Oct 2026

Choose Seed 2.1 Pro

  • you are already invested in the ByteDance ecosystem

At a glance

The differences that matter most.

MiniMax M3.1 Flash
MiniMax
Seed 2.1 Pro
ByteDance
Core performance indexes
LLM Stats Score
48.5
#29
45.8
#38
Reasoning
45.8
#34
47.2
#26
Coding
37.8
#23
31.9
#49
Agents
35.6
#23
31.1
#41
Cost, coverage & limits
Benchmark wins
4 of 6
2 of 6
Input price
$0.15 / M
— / M
Output price
$0.60 / M
— / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

3 shared
Index
MiniMax M3.1 Flash
Seed 2.1 Pro
Vision
28.8#42
34.5#15
Tool use
26.8#30
24.7#38
Multimodal
30.2#38
37.4#5
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

14 reported for MiniMax M3.1 Flash · 94 for Seed 2.1 Pro

6 shared

MiniMax M3.1 Flash outperforms in 4 benchmarks (BabyVision, CyberGym, NL2Repo, PostTrainBench), while Seed 2.1 Pro is better at 2 benchmarks (Agents' Last Exam, CharXiv-R).

MiniMax M3.1 Flash shows notably better performance in the majority of benchmarks.

Mon Oct 19 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only MiniMax M3.1 Flash specifies input context (1,000,000 tokens). Only MiniMax M3.1 Flash specifies output context (524,288 tokens).

MiniMax
MiniMax M3.1 Flash
Input1,000,000 tokens
Output524,288 tokens
ByteDance
Seed 2.1 Pro
Input- tokens
Output- tokens
Mon Oct 19 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both MiniMax M3.1 Flash and Seed 2.1 Pro support multimodal inputs.

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

MiniMax M3.1 Flash

Text
Images
Audio
Video

Seed 2.1 Pro

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.

MiniMax M3.1 Flash

Proprietary

Closed source

Seed 2.1 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

MiniMax M3.1 Flash was released on 2026-10-19, while Seed 2.1 Pro was released on 2026-06-24.

MiniMax M3.1 Flash is 4 months newer than Seed 2.1 Pro.

MiniMax M3.1 Flash

Oct 19, 2026

0 days ago

3mo newer
Seed 2.1 Pro

Jun 24, 2026

3 months ago

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against MiniMax M3.1 Flash and Seed 2.1 Pro side-by-side, then vote on the output you prefer.

MiniMax M3.1 Flash
✓ Preferred
Seed 2.1 Pro
Open in Playground

FAQ

Common questions about MiniMax M3.1 Flash vs Seed 2.1 Pro.

Which is better, MiniMax M3.1 Flash or Seed 2.1 Pro?

MiniMax M3.1 Flash leads the LLM Stats Score 48.5 to 45.8. MiniMax M3.1 Flash is made by MiniMax and Seed 2.1 Pro is made by ByteDance. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does MiniMax M3.1 Flash compare to Seed 2.1 Pro in benchmarks?

MiniMax M3.1 Flash scores BabyVision: 91.0%, CharXiv-R: 82.5%, CyberGym: 82.2%, BankerToolBench: 76.2%, DeepSWE 1.1: 73.7%. Seed 2.1 Pro scores CharXiv-D: 95.5%, MathVision: 94.5%, MathVista: 90.7%, MathVerse: 89.7%, Video-MME: 89.2%.

What are the context window sizes for MiniMax M3.1 Flash and Seed 2.1 Pro?

MiniMax M3.1 Flash supports 1.0M tokens and Seed 2.1 Pro supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between MiniMax M3.1 Flash and Seed 2.1 Pro?

Key differences include LLM Stats Score (48.5 vs 45.8). See the full comparison above for benchmark-by-benchmark results.

Who makes MiniMax M3.1 Flash and Seed 2.1 Pro?

MiniMax M3.1 Flash is developed by MiniMax and Seed 2.1 Pro is developed by ByteDance.

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