Compare/GLM-5.2 (Non-reasoning) vs GPT-5.6 Luna (Non-reasoning)

GLM-5.2 (Non-reasoning)vsGPT-5.6 Luna (Non-reasoning)

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

Z AI

GLM-5.2 (Non-reasoning)

Input
$2.09/M
Output
$6.38/M
Speed
121 tok/s
TTFT
1.09s
OpenAI

GPT-5.6 Luna (Non-reasoning)

Input
$1/M
Output
$6/M
Speed
219 tok/s
TTFT
0.58s

Winner by Category

Cheaper
GPT-5.6 Luna (Non-reasoning)
Faster (tok/s)
GPT-5.6 Luna (Non-reasoning)
Lower Latency
GPT-5.6 Luna (Non-reasoning)
Benchmarks (4-1)
GLM-5.2 (Non-reasoning)

Pricing Comparison

MetricGLM-5.2 (Non-reasoning)GPT-5.6 Luna (Non-reasoning)
Input ($/M tokens)$2.09$1
Output ($/M tokens)$6.38$6
Cost for 1M input + 100K output tokens:
GLM-5.2 (Non-reasoning)$2.73
GPT-5.6 Luna (Non-reasoning)$1.60

Speed Comparison

Output Speed (tokens/s) — higher is better
GLM-5.2 (Non-reasoning)
121 tok/s
GPT-5.6 Luna (Non-reasoning)
219 tok/s
Time to First Token (seconds) — lower is better
GLM-5.2 (Non-reasoning)
1.09s
GPT-5.6 Luna (Non-reasoning)
0.58s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
34.126.6
Coding Index
46.539.3
Math Index
GPQA Diamond
68.6%64.5%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
8.4%6.7%
SciCode
36.1%39.9%
IFBench
TerminalBench
GLM-5.2 (Non-reasoning)4 wins
1 winsGPT-5.6 Luna (Non-reasoning)

Frequently Asked Questions

Which is cheaper, GLM-5.2 (Non-reasoning) or GPT-5.6 Luna (Non-reasoning)?

GPT-5.6 Luna (Non-reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $2.25/M tokens vs $3.16/M for GLM-5.2 (Non-reasoning).

Which model performs better on benchmarks?

GLM-5.2 (Non-reasoning) wins 4 out of 12 benchmarks compared to 1 for GPT-5.6 Luna (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.6 Luna (Non-reasoning) generates tokens faster at 219 tok/s vs 121 tok/s. However, GPT-5.6 Luna (Non-reasoning) has lower time-to-first-token (0.58s vs 1.09s).

When should I use GLM-5.2 (Non-reasoning) vs GPT-5.6 Luna (Non-reasoning)?

Choose based on your priorities: GPT-5.6 Luna (Non-reasoning) for lower cost, GLM-5.2 (Non-reasoning) for stronger benchmark performance, and GPT-5.6 Luna (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.