Compare/o4-mini (high) vs GLM-5.2 (max)

o4-mini (high)vsGLM-5.2 (max)

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

OpenAI

o4-mini (high)

Input
$1.1/M
Output
$4.4/M
Speed
154 tok/s
TTFT
21.27s
Z AI

GLM-5.2 (max)

Input
$1.4/M
Output
$4.4/M
Speed
192 tok/s
TTFT
0.90s

Winner by Category

Cheaper
o4-mini (high)
Faster (tok/s)
GLM-5.2 (max)
Lower Latency
GLM-5.2 (max)
Benchmarks (5-7)
GLM-5.2 (max)

Pricing Comparison

Metrico4-mini (high)GLM-5.2 (max)
Input ($/M tokens)$1.1$1.4
Output ($/M tokens)$4.4$4.4
Cost for 1M input + 100K output tokens:
o4-mini (high)$1.54
GLM-5.2 (max)$1.84

Speed Comparison

Output Speed (tokens/s) — higher is better
o4-mini (high)
154 tok/s
GLM-5.2 (max)
192 tok/s
Time to First Token (seconds) — lower is better
o4-mini (high)
21.27s
GLM-5.2 (max)
0.90s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
25.651.1
Coding Index
68.8
Math Index
90.7
GPQA Diamond
78.4%89.5%
MMLU-Pro
83.2%
LiveCodeBench
85.9%
AIME 2025
90.7%
MATH-500
98.9%
Humanity's Last Exam
17.5%40.1%
SciCode
46.5%50.5%
IFBench
68.7%73.3%
TerminalBench
15.2%50.8%
o4-mini (high)5 wins
7 winsGLM-5.2 (max)

Frequently Asked Questions

Which is cheaper, o4-mini (high) or GLM-5.2 (max)?

o4-mini (high) is cheaper overall. Its blended price (3:1 input/output ratio) is $1.93/M tokens vs $2.15/M for GLM-5.2 (max).

Which model performs better on benchmarks?

GLM-5.2 (max) wins 7 out of 12 benchmarks compared to 5 for o4-mini (high). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GLM-5.2 (max) generates tokens faster at 192 tok/s vs 154 tok/s. However, GLM-5.2 (max) has lower time-to-first-token (0.90s vs 21.27s).

When should I use o4-mini (high) vs GLM-5.2 (max)?

Choose based on your priorities: o4-mini (high) for lower cost, GLM-5.2 (max) for stronger benchmark performance, and GLM-5.2 (max) for faster generation. For latency-sensitive apps, check the TTFT comparison above.