Compare/o3-mini vs GLM-5.2 (max)

o3-minivsGLM-5.2 (max)

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

OpenAI

o3-mini

Input
$1.1/M
Output
$4.4/M
Speed
227 tok/s
TTFT
5.43s
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
o3-mini
Faster (tok/s)
o3-mini
Lower Latency
GLM-5.2 (max)
Benchmarks (3-7)
GLM-5.2 (max)

Pricing Comparison

Metrico3-miniGLM-5.2 (max)
Input ($/M tokens)$1.1$1.4
Output ($/M tokens)$4.4$4.4
Cost for 1M input + 100K output tokens:
o3-mini$1.54
GLM-5.2 (max)$1.84

Speed Comparison

Output Speed (tokens/s) — higher is better
o3-mini
227 tok/s
GLM-5.2 (max)
192 tok/s
Time to First Token (seconds) — lower is better
o3-mini
5.43s
GLM-5.2 (max)
0.90s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
19.051.1
Coding Index
—68.8
Math Index
——
GPQA Diamond
74.8%89.5%
MMLU-Pro
79.1%—
LiveCodeBench
71.7%—
AIME 2025
——
MATH-500
97.3%—
Humanity's Last Exam
8.7%40.1%
SciCode
39.9%50.5%
IFBench
—73.3%
TerminalBench
6.8%50.8%
o3-mini3 wins
7 winsGLM-5.2 (max)

Frequently Asked Questions

Which is cheaper, o3-mini or GLM-5.2 (max)?

o3-mini 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 3 for o3-mini. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

o3-mini generates tokens faster at 227 tok/s vs 192 tok/s. However, GLM-5.2 (max) has lower time-to-first-token (0.90s vs 5.43s).

When should I use o3-mini vs GLM-5.2 (max)?

Choose based on your priorities: o3-mini for lower cost, GLM-5.2 (max) for stronger benchmark performance, and o3-mini for faster generation. For latency-sensitive apps, check the TTFT comparison above.

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