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GPT-6 Astra vs MiMo-V2.6-Flash

GPT-6 Astra leads the LLM Stats Score 59.7 to 45.7.

OpenAI · Xiaomi · Updated for 2026

Which is better?

GPT-6 Astra leads the overall LLM Stats Score 59.7 to 45.7, ranking #1 overall.

In the 6 individual benchmarks reported for both models, GPT-6 Astra wins 6; 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-6 Astra

  • overall performance matters — it scores 59.7 and ranks #1 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 6 of 6 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-6 Astra
OpenAI
MiMo-V2.6-Flash
Xiaomi
Core performance indexes
LLM Stats Score
59.7
#1
45.7
#29
Reasoning
57.5
#1
43.2
#42
Coding
48.7
#1
36.6
#21
Agents
45.9
#1
33.3
#25
Cost, coverage & limits
Benchmark wins
6 of 6
0 of 6
Input price
$10.00 / M
— / M
Output price
$50.00 / M
— / M
Context window
1,050,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

2 shared
Index
GPT-6 Astra
MiMo-V2.6-Flash
Tool use
35.8#1
28.1#22
Safety
31.3#1
13.8#14
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

22 reported for GPT-6 Astra · 16 for MiMo-V2.6-Flash

6 shared

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

GPT-6 Astra significantly outperforms across most 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 GPT-6 Astra specifies input context (1,050,000 tokens). Only GPT-6 Astra specifies output context (128,000 tokens).

OpenAI
GPT-6 Astra
Input1,050,000 tokens
Output128,000 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 GPT-6 Astra and MiMo-V2.6-Flash support multimodal inputs.

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

GPT-6 Astra

Text
Images
Audio
Video

MiMo-V2.6-Flash

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-6 Astra 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-6 Astra

Proprietary

Closed source

MiMo-V2.6-Flash

MIT

Open weights

Release Timeline

When each model was launched

GPT-6 Astra was released on 2026-09-04, while MiMo-V2.6-Flash was released on 2026-09-22.

MiMo-V2.6-Flash is 1 month newer than GPT-6 Astra.

GPT-6 Astra

Sep 4, 2026

2 weeks ago

MiMo-V2.6-Flash

Sep 22, 2026

0 days ago

2w newer

Knowledge Cutoff

When training data ends

GPT-6 Astra has a documented knowledge cutoff of 2026-04-30, while MiMo-V2.6-Flash's cutoff date is not specified.

We can confirm GPT-6 Astra's training data extends to 2026-04-30, but cannot make a direct comparison without MiMo-V2.6-Flash's cutoff date.

GPT-6 Astra

Apr 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-6 Astra and MiMo-V2.6-Flash side-by-side, then vote on the output you prefer.

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

FAQ

Common questions about GPT-6 Astra vs MiMo-V2.6-Flash.

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

GPT-6 Astra leads the LLM Stats Score 59.7 to 45.7. GPT-6 Astra 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-6 Astra compare to MiMo-V2.6-Flash in benchmarks?

GPT-6 Astra scores ExploitBench: 100.0%, ARC-AGI-3: 99.9%, ARC-AGI: 98.5%, FrontierMath Tier 4 (v2): 97.6%, GPQA: 96.0%. 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 GPT-6 Astra and MiMo-V2.6-Flash?

GPT-6 Astra 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-6 Astra and MiMo-V2.6-Flash?

Key differences include LLM Stats Score (59.7 vs 45.7), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-6 Astra and MiMo-V2.6-Flash?

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

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