Model Comparison

GPT-5 Codex vs Qwen2.5 72B Instruct

Comparing GPT-5 Codex and Qwen2.5 72B Instruct across benchmarks, pricing, and capabilities.

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Performance Benchmarks

Comparative analysis across standard metrics

No common benchmarks found

GPT-5 Codex and Qwen2.5 72B Instruct don't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Qwen2.5 72B Instruct specifies input context (131,072 tokens). Only Qwen2.5 72B Instruct specifies output context (8,192 tokens).

GPT-5 Codex

Input- tokens

Output- tokens

Qwen2.5 72B Instruct

Input131,072 tokens

Output8,192 tokens

Fri May 15 2026 • llm-stats.com

License

Usage and distribution terms

GPT-5 Codex is licensed under a proprietary license, while Qwen2.5 72B Instruct uses Qwen.

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

GPT-5 Codex

Proprietary

Closed source

Qwen2.5 72B Instruct

Qwen

Open weights

Release Timeline

When each model was launched

GPT-5 Codex was released on 2025-09-15, while Qwen2.5 72B Instruct was released on 2024-09-19.

GPT-5 Codex is 12 months newer than Qwen2.5 72B Instruct.

GPT-5 Codex

Sep 15, 2025

8 months ago

12mo newer

Qwen2.5 72B Instruct

Sep 19, 2024

1.7 years ago

Knowledge Cutoff

When training data ends

GPT-5 Codex has a documented knowledge cutoff of 2024-09-30, while Qwen2.5 72B Instruct'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 Qwen2.5 72B Instruct's cutoff date.

GPT-5 Codex

Sep 2024

Qwen2.5 72B Instruct

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Outputs Comparison

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Key Takeaways

GPT-5 Codex

View details

OpenAI

No standout differentiators in the data we have for this pair.

Qwen2.5 72B Instruct

View details

Alibaba Cloud / Qwen Team

Larger context window (131,072 tokens)

Has open weights

Detailed Comparison

AI Model Comparison Table
Feature	GPT-5 Codex	Qwen2.5 72B Instruct

FAQ

Common questions about GPT-5 Codex vs Qwen2.5 72B Instruct.

Which is better, GPT-5 Codex or Qwen2.5 72B Instruct?

GPT-5 Codex (OpenAI) and Qwen2.5 72B Instruct (Alibaba Cloud / Qwen Team) each have strengths in different areas. Compare their benchmark scores, pricing, context windows, and capabilities above to determine which fits your needs.

How does GPT-5 Codex compare to Qwen2.5 72B Instruct in benchmarks?

GPT-5 Codex scores SWE-Bench Verified: 74.5%. Qwen2.5 72B Instruct scores GSM8k: 95.8%, MT-Bench: 93.5%, MBPP: 88.2%, MMLU-Redux: 86.8%, HumanEval: 86.6%.

What are the context window sizes for GPT-5 Codex and Qwen2.5 72B Instruct?

GPT-5 Codex supports an unknown number of tokens and Qwen2.5 72B Instruct supports 131K 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 Qwen2.5 72B Instruct?

Key differences include licensing (Proprietary vs Qwen). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5 Codex and Qwen2.5 72B Instruct?

GPT-5 Codex is developed by OpenAI and Qwen2.5 72B Instruct is developed by Alibaba Cloud / Qwen Team.