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Grok-4 vs MiMo-V2.6-Flash

MiMo-V2.6-Flash leads the LLM Stats Score 45.7 to 33.7.

xAI · Xiaomi · Updated for 2026

Which is better?

MiMo-V2.6-Flash leads the overall LLM Stats Score 45.7 to 33.7, ranking #29 overall.

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

Choose Grok-4

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose MiMo-V2.6-Flash

  • overall performance matters — it scores 45.7 and ranks #29 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you want the most recent training data — it shipped Sep 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Grok-4
xAI
MiMo-V2.6-Flash
Xiaomi
Core performance indexes
LLM Stats Score
33.7
#101
45.7
#29
Reasoning
32.9
#103
43.2
#42
Coding
17.3
#125
36.6
#21
Cost, coverage & limits
Benchmark wins
—
—
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
256,000
—

Individual benchmarks

7 reported for Grok-4 · 16 for MiMo-V2.6-Flash

No common benchmarks found

Grok-4 and MiMo-V2.6-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

Context Window

Maximum input and output token capacity

Only Grok-4 specifies input context (256,000 tokens). Only Grok-4 specifies output context (8,000 tokens).

xAI
Grok-4
Input256,000 tokens
Output8,000 tokens
Xiaomi
MiMo-V2.6-Flash
Input- tokens
Output- tokens
Tue Sep 22 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both Grok-4 and MiMo-V2.6-Flash support multimodal inputs.

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

Grok-4

Text
Images
Audio
Video

MiMo-V2.6-Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-4 is licensed under a proprietary license, while MiMo-V2.6-Flash uses MIT.

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

Grok-4

Proprietary

Closed source

MiMo-V2.6-Flash

MIT

Open weights

Release Timeline

When each model was launched

Grok-4 was released on 2025-07-09, while MiMo-V2.6-Flash was released on 2026-09-22.

MiMo-V2.6-Flash is 15 months newer than Grok-4.

Grok-4

Jul 9, 2025

1.2 years ago

MiMo-V2.6-Flash

Sep 22, 2026

-1 days ago

1.2yr newer

Knowledge Cutoff

When training data ends

Grok-4 has a documented knowledge cutoff of 2024-12-31, while MiMo-V2.6-Flash's cutoff date is not specified.

We can confirm Grok-4's training data extends to 2024-12-31, but cannot make a direct comparison without MiMo-V2.6-Flash's cutoff date.

Grok-4

Dec 2024

MiMo-V2.6-Flash

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Grok-4 and MiMo-V2.6-Flash side-by-side, then vote on the output you prefer.

Grok-4
✓ Preferred
MiMo-V2.6-Flash
Open in Playground

FAQ

Common questions about Grok-4 vs MiMo-V2.6-Flash.

Which is better, Grok-4 or MiMo-V2.6-Flash?

MiMo-V2.6-Flash leads the LLM Stats Score 45.7 to 33.7. Grok-4 is made by xAI and MiMo-V2.6-Flash is made by Xiaomi. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok-4 compare to MiMo-V2.6-Flash in benchmarks?

Grok-4 scores AIME 2025: 91.7%, HMMT25: 90.0%, GPQA: 87.5%, LiveCodeBench: 79.0%, Humanity's Last Exam: 40.0%. 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%.

What are the context window sizes for Grok-4 and MiMo-V2.6-Flash?

Grok-4 supports 256K tokens and MiMo-V2.6-Flash 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 Grok-4 and MiMo-V2.6-Flash?

Key differences include LLM Stats Score (33.7 vs 45.7), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-4 and MiMo-V2.6-Flash?

Grok-4 is developed by xAI and MiMo-V2.6-Flash is developed by Xiaomi.

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