GPT-5.4 vs Qwen3.6-27B
GPT-5.4 (2026) and Qwen3.6-27B (2026) are agentic coding models from OpenAI and Alibaba. GPT-5.4 ships a not-yet-sourced context window, while Qwen3.6-27B ships a 262K-token context window. On MMLU PRO, GPT-5.4 leads by 1.3 pts. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing. The goal is to make the tradeoff clear before deeper testing.
Qwen3.6-27B is safer overall; choose GPT-5.4 when coding workflow support matters.
Specs
| Released | 2026-03-05 | 2026-04-22 |
| Context window | — | 262K |
| Parameters | — | 27B |
| Architecture | decoder only | dense |
| License | Proprietary | Apache 2.0 |
| Knowledge cutoff | 2025-08 | - |
Pricing and availability
| GPT-5.4 | Qwen3.6-27B | |
|---|---|---|
| Input price | $2.5/1M tokens | - |
| Output price | $15/1M tokens | - |
| Providers | - |
Capabilities
| GPT-5.4 | Qwen3.6-27B | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
| Benchmark | GPT-5.4 | Qwen3.6-27B |
|---|---|---|
| MMLU PRO | 87.5 | 86.2 |
| Google-Proof Q&A | 92.0 | 87.8 |
Deep dive
On shared benchmark coverage, MMLU PRO has GPT-5.4 at 87.5 and Qwen3.6-27B at 86.2, with GPT-5.4 ahead by 1.3 points; Google-Proof Q&A has GPT-5.4 at 92 and Qwen3.6-27B at 87.8, with GPT-5.4 ahead by 4.2 points. The largest visible gap is 4.2 points on Google-Proof Q&A, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on vision: Qwen3.6-27B, structured outputs: GPT-5.4, and code execution: GPT-5.4. Both models share multimodal input, reasoning mode, function calling, and tool use, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
Pricing coverage is uneven: GPT-5.4 has $2.5/1M input tokens and Qwen3.6-27B has no token price sourced yet. Provider availability is 2 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose GPT-5.4 when coding workflow support and broader provider choice are central to the workload. Choose Qwen3.6-27B when coding workflow support are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Is GPT-5.4 or Qwen3.6-27B open source?
GPT-5.4 is listed under Proprietary. Qwen3.6-27B is listed under Apache 2.0. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, GPT-5.4 or Qwen3.6-27B?
Qwen3.6-27B has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, GPT-5.4 or Qwen3.6-27B?
Both GPT-5.4 and Qwen3.6-27B expose multimodal input. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for reasoning mode, GPT-5.4 or Qwen3.6-27B?
Both GPT-5.4 and Qwen3.6-27B expose reasoning mode. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for function calling, GPT-5.4 or Qwen3.6-27B?
Both GPT-5.4 and Qwen3.6-27B expose function calling. The better choice depends on benchmark fit, context budget, pricing, and whether your provider route exposes the same capability surface. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Where can I run GPT-5.4 and Qwen3.6-27B?
GPT-5.4 is available on OpenAI API and OpenRouter. Qwen3.6-27B is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.