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GPT-5 Codex vs MiniMax M3.1 Flash

MiniMax M3.1 Flash leads the LLM Stats Score 48.7 to 26.5.

OpenAI · MiniMax · Updated for 2026

Which is better?

MiniMax M3.1 Flash leads the overall LLM Stats Score 48.7 to 26.5, ranking #29 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 MiniMax M3.1 Flash

  • overall performance matters — it scores 48.7 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 Oct 2026

At a glance

The differences that matter most.

GPT-5 Codex
OpenAI
MiniMax M3.1 Flash
MiniMax
Core performance indexes
LLM Stats Score
26.5
#170
48.7
#29
Reasoning
26.4
#169
45.9
#32
Coding
19.3
#122
37.9
#23
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.15 / M
Output price
— / M
$0.60 / M
Context window
—
1,000,000

Individual benchmarks

1 reported for GPT-5 Codex · 15 for MiniMax M3.1 Flash

No common benchmarks found

GPT-5 Codex and MiniMax M3.1 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 MiniMax M3.1 Flash specifies input context (1,000,000 tokens). Only MiniMax M3.1 Flash specifies output context (524,288 tokens).

OpenAI
GPT-5 Codex
Input- tokens
Output- tokens
MiniMax
MiniMax M3.1 Flash
Input1,000,000 tokens
Output524,288 tokens
Sat Oct 24 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

MiniMax M3.1 Flash supports multimodal inputs, whereas GPT-5 Codex does not.

MiniMax M3.1 Flash can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5 Codex

Text
Images
Audio
Video

MiniMax M3.1 Flash

Text
Images
Audio
Video

License

Usage and distribution terms

Both models are licensed under proprietary licenses.

Both models have usage restrictions defined by their respective organizations.

GPT-5 Codex

Proprietary

Closed source

MiniMax M3.1 Flash

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5 Codex was released on 2025-09-15, while MiniMax M3.1 Flash was released on 2026-10-19.

MiniMax M3.1 Flash is 13 months newer than GPT-5 Codex.

GPT-5 Codex

Sep 15, 2025

1.1 years ago

MiniMax M3.1 Flash

Oct 19, 2026

3 days ago

1.1yr newer

Knowledge Cutoff

When training data ends

GPT-5 Codex has a documented knowledge cutoff of 2024-09-30, while MiniMax M3.1 Flash'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 MiniMax M3.1 Flash's cutoff date.

GPT-5 Codex

Sep 2024

MiniMax M3.1 Flash

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-5 Codex and MiniMax M3.1 Flash side-by-side, then vote on the output you prefer.

GPT-5 Codex
✓ Preferred
MiniMax M3.1 Flash
Open in Playground

FAQ

Common questions about GPT-5 Codex vs MiniMax M3.1 Flash.

Which is better, GPT-5 Codex or MiniMax M3.1 Flash?

MiniMax M3.1 Flash leads the LLM Stats Score 48.7 to 26.5. GPT-5 Codex is made by OpenAI and MiniMax M3.1 Flash is made by MiniMax. 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 MiniMax M3.1 Flash in benchmarks?

GPT-5 Codex scores SWE-Bench Verified: 74.5%. MiniMax M3.1 Flash scores BabyVision: 91.0%, CharXiv-R: 82.5%, CyberGym: 82.2%, BankerToolBench: 76.2%, DeepSWE 1.1: 73.7%.

What are the context window sizes for GPT-5 Codex and MiniMax M3.1 Flash?

GPT-5 Codex supports an unknown number of tokens and MiniMax M3.1 Flash supports 1.0M 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 Codex and MiniMax M3.1 Flash?

Key differences include LLM Stats Score (26.5 vs 48.7), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5 Codex and MiniMax M3.1 Flash?

GPT-5 Codex is developed by OpenAI and MiniMax M3.1 Flash is developed by MiniMax.

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