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GPT-5.6 Sol vs MiMo-V2.6-Flash

GPT-5.6 Sol leads the LLM Stats Score 55.0 to 45.7.

OpenAI · Xiaomi · Updated for 2026

Which is better?

GPT-5.6 Sol leads the overall LLM Stats Score 55.0 to 45.7, ranking #3 overall.

In the 7 individual benchmarks reported for both models, GPT-5.6 Sol wins 7; 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 GPT-5.6 Sol

  • overall performance matters — it scores 55.0 and ranks #3 on LLM Stats
  • your work emphasizes coding and agents — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 7 of 7 exact shared results

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

At a glance

The differences that matter most.

GPT-5.6 Sol
OpenAI
MiMo-V2.6-Flash
Xiaomi
Core performance indexes
LLM Stats Score
55.0
#3
45.7
#29
Reasoning
53.9
#3
43.2
#42
Coding
46.1
#2
36.6
#21
Agents
41.4
#2
33.3
#25
Cost, coverage & limits
Benchmark wins
7 of 7
0 of 7
Input price
$5.00 / M
— / M
Output price
$30.00 / M
— / M
Context window
1,050,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
GPT-5.6 Sol
MiMo-V2.6-Flash
Tool use
32.2#6
28.1#22
Safety
27.8#2
13.8#14
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

45 reported for GPT-5.6 Sol · 16 for MiMo-V2.6-Flash

7 shared

GPT-5.6 Sol outperforms in 7 benchmarks (Agents' Last Exam, DeepSWE 1.1, ExploitBench, ExploitGym, SEC-bench Pro, Terminal-Bench 2.1, Terminal-Bench 4.0), while MiMo-V2.6-Flash is better at 0 benchmarks.

GPT-5.6 Sol significantly outperforms across most benchmarks.

Mon Sep 21 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only GPT-5.6 Sol specifies input context (1,050,000 tokens). Only GPT-5.6 Sol specifies output context (128,000 tokens).

OpenAI
GPT-5.6 Sol
Input1,050,000 tokens
Output128,000 tokens
Xiaomi
MiMo-V2.6-Flash
Input- tokens
Output- tokens
Mon Sep 21 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Both GPT-5.6 Sol and MiMo-V2.6-Flash support multimodal inputs.

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

GPT-5.6 Sol

Text
Images
Audio
Video

MiMo-V2.6-Flash

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.6 Sol 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.

GPT-5.6 Sol

Proprietary

Closed source

MiMo-V2.6-Flash

MIT

Open weights

Release Timeline

When each model was launched

GPT-5.6 Sol was released on 2026-07-09, while MiMo-V2.6-Flash was released on 2026-09-22.

MiMo-V2.6-Flash is 3 months newer than GPT-5.6 Sol.

GPT-5.6 Sol

Jul 9, 2026

2 months ago

MiMo-V2.6-Flash

Sep 22, 2026

-1 days ago

2mo newer

Knowledge Cutoff

When training data ends

GPT-5.6 Sol has a documented knowledge cutoff of 2026-02-16, while MiMo-V2.6-Flash's cutoff date is not specified.

We can confirm GPT-5.6 Sol's training data extends to 2026-02-16, but cannot make a direct comparison without MiMo-V2.6-Flash's cutoff date.

GPT-5.6 Sol

Feb 2026

MiMo-V2.6-Flash

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GPT-5.6 Sol and MiMo-V2.6-Flash side-by-side, then vote on the output you prefer.

GPT-5.6 Sol
✓ Preferred
MiMo-V2.6-Flash
Open in Playground

FAQ

Common questions about GPT-5.6 Sol vs MiMo-V2.6-Flash.

Which is better, GPT-5.6 Sol or MiMo-V2.6-Flash?

GPT-5.6 Sol leads the LLM Stats Score 55.0 to 45.7. GPT-5.6 Sol is made by OpenAI 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 GPT-5.6 Sol compare to MiMo-V2.6-Flash in benchmarks?

GPT-5.6 Sol scores Connectors: 100.0%, Capture-the-Flag Challenges (Internal): 96.7%, HealthBench Consensus: 95.5%, GPQA: 94.6%, MRCR v2 (8-needle): 91.5%. 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 GPT-5.6 Sol and MiMo-V2.6-Flash?

GPT-5.6 Sol supports 1.1M 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 GPT-5.6 Sol and MiMo-V2.6-Flash?

Key differences include LLM Stats Score (55.0 vs 45.7), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.6 Sol and MiMo-V2.6-Flash?

GPT-5.6 Sol is developed by OpenAI and MiMo-V2.6-Flash is developed by Xiaomi.

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