Model Comparison
GPT-5.1 Codex vs Qwen3-Next-80B-A3B-InstructWhich is better in 2026?
Comparing GPT-5.1 Codex and Qwen3-Next-80B-A3B-Instruct across benchmarks, pricing, and capabilities.
Verdict: GPT-5.1 Codex vs Qwen3-Next-80B-A3B-Instruct — which is better?
GPT-5.1 Codex (by OpenAI) and Qwen3-Next-80B-A3B-Instruct (by Alibaba Cloud / Qwen Team) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
On price, Qwen3-Next-80B-A3B-Instruct is roughly 7.1x cheaper per token on a blended 3:1 input/output basis, which adds up quickly at production volume.
GPT-5.1 Codex also accepts a larger context window (400,000 input tokens), making it the stronger choice for long documents and large codebases.
Choose GPT-5.1 Codex if…
- you process long inputs — it offers a 400,000 token context window
- you want the most recent training data — it shipped Nov 2025
Choose Qwen3-Next-80B-A3B-Instruct if…
- cost matters — it's about 7.1x cheaper per token
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.1 Codex and Qwen3-Next-80B-A3B-Instructdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, GPT-5.1 Codex ($1.25/1M tokens) is 8.3x more expensive than Qwen3-Next-80B-A3B-Instruct ($0.15/1M tokens).
For output processing, GPT-5.1 Codex ($10.00/1M tokens) is 6.7x more expensive than Qwen3-Next-80B-A3B-Instruct ($1.50/1M tokens).
In conclusion, GPT-5.1 Codex is more expensive than Qwen3-Next-80B-A3B-Instruct.*
* Using a 3:1 ratio of input to output tokens
Context Window
Maximum input and output token capacity
GPT-5.1 Codex accepts 400,000 input tokens compared to Qwen3-Next-80B-A3B-Instruct's 65,536 tokens. GPT-5.1 Codex can generate longer responses up to 128,000 tokens, while Qwen3-Next-80B-A3B-Instruct is limited to 65,536 tokens.
Input Capabilities
Supported data types and modalities
GPT-5.1 Codex supports multimodal inputs, whereas Qwen3-Next-80B-A3B-Instruct does not.
GPT-5.1 Codex can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.1 Codex
Qwen3-Next-80B-A3B-Instruct
License
Usage and distribution terms
GPT-5.1 Codex is licensed under a proprietary license, while Qwen3-Next-80B-A3B-Instruct uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT-5.1 Codex was released on 2025-11-19, while Qwen3-Next-80B-A3B-Instruct was released on 2025-09-10.
GPT-5.1 Codex is 2 months newer than Qwen3-Next-80B-A3B-Instruct.
Nov 19, 2025
7 months ago
2mo newerSep 10, 2025
9 months ago
Knowledge Cutoff
When training data ends
GPT-5.1 Codex has a documented knowledge cutoff of 2024-09-30, while Qwen3-Next-80B-A3B-Instruct's cutoff date is not specified.
We can confirm GPT-5.1 Codex's training data extends to 2024-09-30, but cannot make a direct comparison without Qwen3-Next-80B-A3B-Instruct's cutoff date.
Sep 2024
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Provider Availability
GPT-5.1 Codex is available from OpenAI. Qwen3-Next-80B-A3B-Instruct is available from Novita.
GPT-5.1 Codex
Qwen3-Next-80B-A3B-Instruct
Outputs Comparison
Key Takeaways
Qwen3-Next-80B-A3B-Instruct
View detailsAlibaba Cloud / Qwen Team
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against GPT-5.1 Codex and Qwen3-Next-80B-A3B-Instruct side-by-side, then vote on the output you prefer.
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FAQ
Common questions about GPT-5.1 Codex vs Qwen3-Next-80B-A3B-Instruct.