The AI arena is free today

Open Superagent

GPT-5 Codex vs MiMo-V2.6-Pro

MiMo-V2.6-Pro leads the LLM Stats Score 49.8 to 26.6.

OpenAI · Xiaomi · Updated for 2026

Which is better?

MiMo-V2.6-Pro leads the overall LLM Stats Score 49.8 to 26.6, ranking #19 overall.

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

Choose GPT-5 Codex

  • you are already invested in the OpenAI ecosystem

Choose MiMo-V2.6-Pro

  • overall performance matters — it scores 49.8 and ranks #19 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.

GPT-5 Codex
OpenAI
MiMo-V2.6-Pro
Xiaomi
Core performance indexes
LLM Stats Score
26.6
#152
49.8
#19
Reasoning
26.5
#150
45.2
#30
Coding
19.3
#110
41.8
#9
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

1 reported for GPT-5 Codex · 3 for MiMo-V2.6-Pro

No common benchmarks found

GPT-5 Codex and MiMo-V2.6-Prodon'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

Input capabilities

Documented input modalities across available providers

MiMo-V2.6-Pro supports multimodal inputs, whereas GPT-5 Codex does not.

MiMo-V2.6-Pro can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5 Codex

Text
Images
Audio
Video

MiMo-V2.6-Pro

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5 Codex is licensed under a proprietary license, while MiMo-V2.6-Pro uses MIT.

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

GPT-5 Codex

Proprietary

Closed source

MiMo-V2.6-Pro

MIT

Open weights

Release Timeline

When each model was launched

GPT-5 Codex was released on 2025-09-15, while MiMo-V2.6-Pro was released on 2026-09-22.

MiMo-V2.6-Pro is 12 months newer than GPT-5 Codex.

GPT-5 Codex

Sep 15, 2025

1.0 years ago

MiMo-V2.6-Pro

Sep 22, 2026

-1 days ago

1.0yr newer

Knowledge Cutoff

When training data ends

GPT-5 Codex has a documented knowledge cutoff of 2024-09-30, while MiMo-V2.6-Pro's cutoff date is not specified.

We can confirm GPT-5 Codex's training data extends to 2024-09-30, but cannot make a direct comparison without MiMo-V2.6-Pro's cutoff date.

GPT-5 Codex

Sep 2024

MiMo-V2.6-Pro

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GPT-5 Codex and MiMo-V2.6-Pro side-by-side, then vote on the output you prefer.

GPT-5 Codex
✓ Preferred
MiMo-V2.6-Pro
Open in Playground

FAQ

Common questions about GPT-5 Codex vs MiMo-V2.6-Pro.

Which is better, GPT-5 Codex or MiMo-V2.6-Pro?

MiMo-V2.6-Pro leads the LLM Stats Score 49.8 to 26.6. GPT-5 Codex is made by OpenAI and MiMo-V2.6-Pro 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 Codex compare to MiMo-V2.6-Pro in benchmarks?

GPT-5 Codex scores SWE-Bench Verified: 74.5%. MiMo-V2.6-Pro scores DeepSWE 1.1: 71.9%, MiMo Coding Bench: 63.2%, Program Bench: 26.5%.

What are the main differences between GPT-5 Codex and MiMo-V2.6-Pro?

Key differences include LLM Stats Score (26.6 vs 49.8), multimodal support (no vs yes), licensing (Proprietary vs MIT). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5 Codex and MiMo-V2.6-Pro?

GPT-5 Codex is developed by OpenAI and MiMo-V2.6-Pro is developed by Xiaomi.

Related comparisons