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MiMo-V2.6-Flash vs Seed 2.1 Pro

MiMo-V2.6-Flash and Seed 2.1 Pro are closely matched at 45.6 and 46.2 on the LLM Stats Score.

Xiaomi · ByteDance · Updated for 2026

Which is better?

MiMo-V2.6-Flash and Seed 2.1 Pro are closely matched on the overall LLM Stats Score at 45.6 and 46.2.

The models split the 4 individual benchmarks reported for both models evenly.

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

Choose MiMo-V2.6-Flash

  • you want the most recent training data — it shipped Sep 2026
  • you need open weights you can self-host or fine-tune

Choose Seed 2.1 Pro

  • you are already invested in the ByteDance ecosystem

At a glance

The differences that matter most.

MiMo-V2.6-Flash
Xiaomi
Seed 2.1 Pro
ByteDance
Core performance indexes
LLM Stats Score
45.6
#29
46.2
#27
Reasoning
42.5
#45
47.4
#24
Coding
36.7
#21
33.4
#37
Agents
33.1
#26
31.8
#31
Cost, coverage & limits
Benchmark wins
2 of 4
2 of 4
Input price
$0.14 / M
— / M
Output price
$0.28 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
MiMo-V2.6-Flash
Seed 2.1 Pro
Tool use
24.7#29
24.5#32
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

16 reported for MiMo-V2.6-Flash · 94 for Seed 2.1 Pro

4 shared

MiMo-V2.6-Flash outperforms in 2 benchmarks (CyberGym, Terminal-Bench 2.1), while Seed 2.1 Pro is better at 2 benchmarks (Agents' Last Exam, Program Bench).

Both models are evenly matched across the benchmarks.

Tue Sep 22 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only MiMo-V2.6-Flash specifies input context (1,048,576 tokens).

Xiaomi
MiMo-V2.6-Flash
Input1,048,576 tokens
Output- tokens
ByteDance
Seed 2.1 Pro
Input- tokens
Output- tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both MiMo-V2.6-Flash and Seed 2.1 Pro support multimodal inputs.

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

MiMo-V2.6-Flash

Text
Images
Audio
Video

Seed 2.1 Pro

Text
Images
Audio
Video

License

Usage and distribution terms

MiMo-V2.6-Flash is licensed under MIT, while Seed 2.1 Pro uses a proprietary license.

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

MiMo-V2.6-Flash

MIT

Open weights

Seed 2.1 Pro

Proprietary

Closed source

Release Timeline

When each model was launched

MiMo-V2.6-Flash was released on 2026-09-22, while Seed 2.1 Pro was released on 2026-06-24.

MiMo-V2.6-Flash is 3 months newer than Seed 2.1 Pro.

MiMo-V2.6-Flash

Sep 22, 2026

-1 days ago

3mo newer
Seed 2.1 Pro

Jun 24, 2026

2 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?Start an Issue discussion→

Judge for yourself.

Run your own prompts against MiMo-V2.6-Flash and Seed 2.1 Pro side-by-side, then vote on the output you prefer.

MiMo-V2.6-Flash
✓ Preferred
Seed 2.1 Pro
Open in Playground

FAQ

Common questions about MiMo-V2.6-Flash vs Seed 2.1 Pro.

Which is better, MiMo-V2.6-Flash or Seed 2.1 Pro?

MiMo-V2.6-Flash and Seed 2.1 Pro are closely matched on the LLM Stats Score at 45.6 and 46.2. MiMo-V2.6-Flash is made by Xiaomi 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 MiMo-V2.6-Flash compare to Seed 2.1 Pro in benchmarks?

MiMo-V2.6-Flash scores CyberGym: 95.1%, Terminal-Bench 2.1: 87.6%, OSWorld-Verified: 80.8%, MiMo Cyber Bench: 77.2%, Toolathlon-Verified: 73.6%. 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 MiMo-V2.6-Flash and Seed 2.1 Pro?

MiMo-V2.6-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 MiMo-V2.6-Flash and Seed 2.1 Pro?

Key differences include LLM Stats Score (45.6 vs 46.2), licensing (MIT vs Proprietary). See the full comparison above for benchmark-by-benchmark results.

Who makes MiMo-V2.6-Flash and Seed 2.1 Pro?

MiMo-V2.6-Flash is developed by Xiaomi and Seed 2.1 Pro is developed by ByteDance.

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