GPT-5.4 vs Qwen 3.6 Plus

OpenAI · US  |  Alibaba · China · Updated June 2026

Quick verdict

Pick GPT-5.4 for strong general-purpose default or coding and software engineering. Pick Qwen 3.6 Plus for strong gpqa diamond science reasoning or open-weight and budget-friendly. On a tight budget at scale, Qwen 3.6 Plus is the value pick.

GPT-5.4 (OpenAI, US) and Qwen 3.6 Plus (Alibaba, China) line up two different AI ecosystems against each other — a comparison that is as much about cost philosophy and openness as raw capability. GPT-5.4 is openAI's 2026 workhorse — unifies Codex and GPT into a strong default that costs half of GPT-5.5. Qwen 3.6 Plus is alibaba's open-weight contender — surprising benchmark wins at a budget price. Their biggest split is price, and the breakdown below shows exactly how that plays out for your workload.

Key differences at a glance

Side-by-side specs

SpecGPT-5.4Qwen 3.6 Plus
ProviderOpenAI (US) Alibaba (China)
ReleasedMarch 5, 2026 March 31, 2026
Context window1M (~1,500 pages) 1M (~1,500 pages)
Price (in/out)$2.5/$15 per 1M tokens $0.325/$1.95 per 1M tokens
Open weight?No — API only No — API only
Modalitiestext, image, code text, image, code
SWE-Bench VerifiedNot published 78.8%
MRCR v2 @ 1MNot published Not published

Who wins what

Strong general-purpose default

GPT-5.4

GPT-5.4 lists strong general-purpose default among its strengths; Qwen 3.6 Plus does not.

Coding and software engineering

GPT-5.4

GPT-5.4 lists coding and software engineering among its strengths; Qwen 3.6 Plus does not.

Document understanding and tool use

GPT-5.4

GPT-5.4 lists document understanding and tool use among its strengths; Qwen 3.6 Plus does not.

Strong GPQA Diamond science reasoning

Qwen 3.6 Plus

Alibaba's open-weight contender — surprising benchmark wins at a budget price — and it runs cheaper at $0.325/$1.95 per 1M tokens.

Open-weight and budget-friendly

Qwen 3.6 Plus

At $0.325/$1.95 per 1M tokens it undercuts GPT-5.4 ($2.5/$15 per 1M tokens), and that gap compounds at volume.

1M context

Qwen 3.6 Plus

Alibaba's open-weight contender — surprising benchmark wins at a budget price — and it is the newer of the two.

Lowest cost at scale

Qwen 3.6 Plus

At $0.325/$1.95 per 1M tokens, it is the cheaper of the two — the gap dominates the bill on high-volume workloads.

Which should you pick?

A cost-sensitive startup shipping high volume

Qwen 3.6 Plus

At $0.325/$1.95 per 1M tokens it undercuts GPT-5.4, and on millions of tokens that margin decides the monthly bill.

Anyone whose priority is strong general-purpose default

GPT-5.4

It is specifically built for that.

Anyone whose priority is strong gpqa diamond science reasoning

Qwen 3.6 Plus

That is its strongest area.

An enterprise with regional data-residency rules

GPT-5.4 or Qwen 3.6 Plus

Origin (US vs China) affects where data is processed and which compliance regime applies — check the provider's terms for your region.

GPT-5.4: where it fits

OpenAI's 2026 workhorse — unifies Codex and GPT into a strong default that costs half of GPT-5.5. Released March 5, 2026 by OpenAI, it is built for strong general-purpose default, coding and software engineering, document understanding and tool use, and 1M context with good token efficiency.

Its trade-offs are real: topped by GPT-5.5 on the hardest tasks, and pricier than open-weight rivals. At $2.5 in / $15 out per million tokens, it sits in the mid price band.

Qwen 3.6 Plus: where it fits

Alibaba's open-weight contender — surprising benchmark wins at a budget price. Released March 31, 2026 by Alibaba, it is built for strong GPQA Diamond science reasoning, open-weight and budget-friendly, 1M context, and multilingual coverage.

Its trade-offs: less Western ecosystem tooling, and benchmark coverage still maturing. At $0.325 in / $1.95 out per million tokens, it sits in the budget price band.

The bottom line for this matchup

This is less "which is smarter" and more "which ecosystem fits." GPT-5.4 (US) and Qwen 3.6 Plus (China) differ on pricing philosophy, data-residency, and tooling as much as on raw scores. Qwen 3.6 Plus is the cheaper option, which matters at volume. The pragmatic move is to run one real task through both and judge the outputs against your own constraints — including where your data is allowed to be processed.

Want both GPT-5.4 and Qwen 3.6 Plus without two subscriptions? LumiChats gives you these plus 40+ models under one ₹69/day pass (about $1/day) — draft with one, cross-check with the other.

See pricing

Frequently asked questions

Is GPT-5.4 or Qwen 3.6 Plus better for coding?

Public SWE-Bench figures are not available for GPT-5.4, so the honest test is your own repository — run an identical real bug through both. By design, GPT-5.4 leans toward strong general-purpose default while Qwen 3.6 Plus leans toward strong gpqa diamond science reasoning, and that positioning usually predicts which feels better on your codebase.

Which is cheaper, GPT-5.4 or Qwen 3.6 Plus?

Qwen 3.6 Plus is cheaper — $2.5/$15 per 1M tokens vs $0.325/$1.95 per 1M tokens, roughly 7.7× apart on input.

Which has the bigger context window?

Both advertise 1M (~1,500 pages). Remember advertised ≠ usable: recall typically degrades before the ceiling.

Can I use both GPT-5.4 and Qwen 3.6 Plus together?

Yes — a multi-model platform like LumiChats gives you GPT-5.4, Qwen 3.6 Plus and 40+ others under one ₹69/day pass (about $1/day), so you can draft with one and cross-check with the other instead of buying two subscriptions.

Which is newer, GPT-5.4 or Qwen 3.6 Plus?

Qwen 3.6 Plus — released March 31, 2026, about 26 days after GPT-5.4.

Related comparisons

Specifications and benchmarks reflect publicly reported figures as of June 2026 and may change as providers release updates. Always verify on your own workload.