GPT-5.6 Luna vs Qwen3.7 Plus: price, scores, context

Side-by-side comparison

Criterion	GPT-5.6 Luna	Qwen3.7 Plus
Developer	OpenAI	Alibaba Cloud (Qwen)
Released	July 9, 2026	June 2, 2026
Capability index	79.6 / 100	56.2 / 100
Input price	$0.20	$0.40
Output price	$1.2	$1.6
Cost of a typical task	$0.006	$0.011
Context window	1,050,000 tokens	1,000,000 tokens
Maximum output	128,000 tokens	50,000 tokens
Reasoning mode	Yes	Yes
Tool calling	Yes	Yes
Accepted inputs	text, image, PDF	text, image, video
Open weights	No	No
Knowledge cutoff	February 16, 2026	April 2025

What are we comparing?

GPT-5.6 Luna and Qwen3.7 Plus are two budget models, built for high volumes at a low price, one from OpenAI, the other from Alibaba Cloud (Qwen). GPT-5.6 Luna was released on July 9, 2026, Qwen3.7 Plus on June 2, 2026.

All figures below come from public sources checked on October 22, 2026: models.dev and OpenRouter for prices and capabilities, Epoch AI for scores.

Performance

On our capability index, GPT-5.6 Luna scores 79.6 out of 100 and Qwen3.7 Plus 56.2. GPT-5.6 Luna leads by 23.4 points.

On the 4 benchmarks reported for both, GPT-5.6 Luna wins 4 times and Qwen3.7 Plus 0:

GPQA Diamond (PhD-level science questions): GPT-5.6 Luna 91.6%, Qwen3.7 Plus 87.9%
OTIS Mock AIME (competition mathematics problems): GPT-5.6 Luna 98.3%, Qwen3.7 Plus 93.3%
FrontierMath (very hard research-level mathematics): GPT-5.6 Luna 82.1%, Qwen3.7 Plus 34.4%
FrontierCode (advanced programming tasks): GPT-5.6 Luna 39.8%, Qwen3.7 Plus 10.2%

Which one costs less?

GPT-5.6 Luna costs $0.20 per million input tokens and $1.2 per million output tokens; Qwen3.7 Plus costs $0.40 and $1.6.

For a typical agent task (read 20,000 tokens, write 2,000), expect $0.006 with GPT-5.6 Luna versus $0.011 with Qwen3.7 Plus. GPT-5.6 Luna is 1.8 times cheaper, a gap that adds up quickly over 1,000 tasks: $4.8 difference.

Run the numbers with your own volumes in the agent cost calculator.

Under the hood

GPT-5.6 Luna reads more in one go: 1,050,000 tokens of context (roughly 1,575 pages), versus 1,000,000 for Qwen3.7 Plus.

Reasoning mode: GPT-5.6 Luna yes, Qwen3.7 Plus yes. Tool calling: GPT-5.6 Luna yes, Qwen3.7 Plus yes. Image input: GPT-5.6 Luna yes, Qwen3.7 Plus yes.

Neither publishes its weights: both are used through an API.

Knowledge cutoff: February 16, 2026 for GPT-5.6 Luna, April 2025 for Qwen3.7 Plus.

In short

Our reading of the data:

Choose GPT-5.6 Luna for a higher capability index and a lower cost.

This verdict relies on public figures; it does not replace a trial on your own tasks.

Frequently asked questions

GPT-5.6 Luna or Qwen3.7 Plus: which is better?

On our index (Epoch AI data), GPT-5.6 Luna scores 79.6 and Qwen3.7 Plus 56.2 out of 100. The best choice also depends on price and on your use case.

Which one is cheaper?

GPT-5.6 Luna. To read 20,000 tokens and write 2,000, expect $0.006 with GPT-5.6 Luna and $0.011 with Qwen3.7 Plus (prices as of October 22, 2026).

Which one has the larger context window?

GPT-5.6 Luna, with 1,050,000 tokens versus 1,000,000.

Can I run GPT-5.6 Luna or Qwen3.7 Plus on my own servers?

No: both are closed models, available through an API.

GPT-5.6 Luna vs Qwen3.7 Plus