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GPT-5 Codex vs Mistral Large 4

Mistral Large 4 leads the LLM Stats Score 46.2 to 26.6.

OpenAI · Mistral AI · Updated for 2026

Which is better?

Mistral Large 4 leads the overall LLM Stats Score 46.2 to 26.6, ranking #34 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 Mistral Large 4

  • overall performance matters — it scores 46.2 and ranks #34 on LLM Stats
  • your work emphasizes reasoning — 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
Mistral Large 4
Mistral AI
Core performance indexes
LLM Stats Score
26.6
#165
46.2
#34
Reasoning
26.4
#163
44.4
#38
Coding
19.1
#119
35.4
#27
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
$0.68 / M
Output price
— / M
$2.09 / M
Context window
—
1,000,000

Individual benchmarks

1 reported for GPT-5 Codex · 18 for Mistral Large 4

No common benchmarks found

GPT-5 Codex and Mistral Large 4don'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 Mistral Large 4 specifies input context (1,000,000 tokens).

OpenAI
GPT-5 Codex
Input- tokens
Output- tokens
Mistral AI
Mistral Large 4
Input1,000,000 tokens
Output- tokens
Fri Oct 16 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Mistral Large 4 supports multimodal inputs, whereas GPT-5 Codex does not.

Mistral Large 4 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5 Codex

Text
Images
Audio
Video

Mistral Large 4

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

Mistral Large 4

Proprietary

Closed source

Release Timeline

When each model was launched

GPT-5 Codex was released on 2025-09-15, while Mistral Large 4 was released on 2026-10-06.

Mistral Large 4 is 13 months newer than GPT-5 Codex.

GPT-5 Codex

Sep 15, 2025

1.1 years ago

Mistral Large 4

Oct 6, 2026

1 weeks ago

1.1yr newer

Knowledge Cutoff

When training data ends

GPT-5 Codex has a documented knowledge cutoff of 2024-09-30, while Mistral Large 4'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 Mistral Large 4's cutoff date.

GPT-5 Codex

Sep 2024

Mistral Large 4

—

Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against GPT-5 Codex and Mistral Large 4 side-by-side, then vote on the output you prefer.

GPT-5 Codex
✓ Preferred
Mistral Large 4
Open in Playground

FAQ

Common questions about GPT-5 Codex vs Mistral Large 4.

Which is better, GPT-5 Codex or Mistral Large 4?

Mistral Large 4 leads the LLM Stats Score 46.2 to 26.6. GPT-5 Codex is made by OpenAI and Mistral Large 4 is made by Mistral AI. 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 Mistral Large 4 in benchmarks?

GPT-5 Codex scores SWE-Bench Verified: 74.5%. Mistral Large 4 scores B3 AI Security Benchmark: 93.3%, CyBench: 93.0%, SciCode: 91.8%, KORABench: 84.5%, CyberGym: 82.0%.

What are the context window sizes for GPT-5 Codex and Mistral Large 4?

GPT-5 Codex supports an unknown number of tokens and Mistral Large 4 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 Mistral Large 4?

Key differences include LLM Stats Score (26.6 vs 46.2), multimodal support (no vs yes). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5 Codex and Mistral Large 4?

GPT-5 Codex is developed by OpenAI and Mistral Large 4 is developed by Mistral AI.

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