GPT-5.4 vs Qwen3.8-27B

Q: What are the context window sizes for GPT-5.4 and Qwen3.8-27B?

GPT-5.4 supports 1.0M tokens and Qwen3.8-27B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

Q: What are the main differences between GPT-5.4 and Qwen3.8-27B?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Q: Who makes GPT-5.4 and Qwen3.8-27B?

GPT-5.4 is developed by OpenAI and Qwen3.8-27B is developed by Alibaba Cloud / Qwen Team.

Both models are evenly matched across the benchmarks.

OpenAI · Alibaba Cloud / Qwen Team · Updated for 2026

Which is better?

GPT-5.4 outperforms in 3 benchmarks (DeepSWE 1.1, GPQA, Humanity's Last Exam), while Qwen3.8-27B is better at 3 benchmarks (OmniDocBench 1.5, OSWorld-Verified, SWE-Bench Pro). Both models are evenly matched across the benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose GPT-5.4

you want predictable pricing at $2.50/M input and $15.00/M output

Choose Qwen3.8-27B

you want the most recent training data — it shipped Aug 2026
you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

GPT-5.4

OpenAI

Qwen3.8-27B

Alibaba Cloud / Qwen Team

Benchmark wins

3 of 6

Input price

$2.50 / M

— / M

Output price

$15.00 / M

— / M

Context window

1,000,000

—

Released

Mar 2026

Aug 2026

License

Proprietary

Apache 2.0

Performance Benchmarks

Comparative analysis across standard metrics

6 benchmarks

GPT-5.4 outperforms in 3 benchmarks (DeepSWE 1.1, GPQA, Humanity's Last Exam), while Qwen3.8-27B is better at 3 benchmarks (OmniDocBench 1.5, OSWorld-Verified, SWE-Bench Pro).

Both models are evenly matched across the benchmarks.

Wed Aug 26 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Context Window

Maximum input and output token capacity

Only GPT-5.4 specifies input context (1,000,000 tokens). Only GPT-5.4 specifies output context (128,000 tokens).

GPT-5.4

Input1,000,000 tokens

Output128,000 tokens

Qwen3.8-27B

Input- tokens

Output- tokens

Wed Aug 26 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Both GPT-5.4 and Qwen3.8-27B support multimodal inputs.

They are both capable of processing various types of data, offering versatility in application.

GPT-5.4

Text

Images

Audio

Video

Qwen3.8-27B

Text

Images

Audio

Video

License

Usage and distribution terms

GPT-5.4 is licensed under a proprietary license, while Qwen3.8-27B uses Apache 2.0.

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

GPT-5.4

Proprietary

Closed source

Qwen3.8-27B

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.4 was released on 2026-03-05, while Qwen3.8-27B was released on 2026-08-14.

Qwen3.8-27B is 5 months newer than GPT-5.4.

GPT-5.4

Mar 5, 2026

5 months ago

Qwen3.8-27B

Aug 14, 2026

1 weeks ago

5mo newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GPT-5.4 and Qwen3.8-27B side-by-side, then vote on the output you prefer.

GPT-5.4

✓ Preferred

Qwen3.8-27B

Open in Playground

FAQ

Common questions about GPT-5.4 vs Qwen3.8-27B.

Which is better, GPT-5.4 or Qwen3.8-27B?

Both models are evenly matched across the benchmarks. GPT-5.4 is made by OpenAI and Qwen3.8-27B is made by Alibaba Cloud / Qwen Team. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.4 compare to Qwen3.8-27B in benchmarks?

GPT-5.4 scores Tau2 Telecom: 98.9%, ARC-AGI: 93.7%, Graphwalks BFS <128k: 93.0%, GPQA: 92.8%, Graphwalks parents <128k: 89.8%. Qwen3.8-27B scores MathVision: 94.6%, OmniDocBench 1.5: 91.1%, LiveCodeBench v6: 90.3%, CharXiv-R: 90.2%, GPQA: 89.2%.

What are the context window sizes for GPT-5.4 and Qwen3.8-27B?

GPT-5.4 supports 1.0M tokens and Qwen3.8-27B supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GPT-5.4 and Qwen3.8-27B?

Key differences include licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GPT-5.4 and Qwen3.8-27B?

GPT-5.4 is developed by OpenAI and Qwen3.8-27B is developed by Alibaba Cloud / Qwen Team.

GPT-5.4 vs Qwen3.8-27B