Compare/GLM-5-Turbo vs gpt-oss-20B (high)

GLM-5-Turbovsgpt-oss-20B (high)

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

Z AI

GLM-5-Turbo

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

gpt-oss-20B (high)

Input
$0.05/M
Output
$0.2/M
Speed
256 tok/s
TTFT
0.34s

Winner by Category

Cheaper
GLM-5-Turbo
Faster (tok/s)
gpt-oss-20B (high)
Lower Latency
GLM-5-Turbo
Benchmarks (7-4)
GLM-5-Turbo

Pricing Comparison

MetricGLM-5-Turbogpt-oss-20B (high)
Input ($/M tokens)$0$0.05
Output ($/M tokens)$0$0.2
Cost for 1M input + 100K output tokens:
GLM-5-Turbo$0.00
gpt-oss-20B (high)$0.07

Speed Comparison

Output Speed (tokens/s) — higher is better
GLM-5-Turbo
gpt-oss-20B (high)
256 tok/s
Time to First Token (seconds) — lower is better
GLM-5-Turbo
gpt-oss-20B (high)
0.34s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
46.824.5
Coding Index
36.818.5
Math Index
89.3
GPQA Diamond
84.7%68.8%
MMLU-Pro
74.8%
LiveCodeBench
77.7%
AIME 2025
89.3%
MATH-500
Humanity's Last Exam
25.4%9.8%
SciCode
43.6%34.4%
IFBench
73.2%65.1%
TerminalBench
33.3%10.6%
GLM-5-Turbo7 wins
4 winsgpt-oss-20B (high)

Frequently Asked Questions

Which is cheaper, GLM-5-Turbo or gpt-oss-20B (high)?

GLM-5-Turbo is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.09/M for gpt-oss-20B (high).

Which model performs better on benchmarks?

GLM-5-Turbo wins 7 out of 12 benchmarks compared to 4 for gpt-oss-20B (high). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

gpt-oss-20B (high) generates tokens faster at 256 tok/s vs 0 tok/s. GLM-5-Turbo also has lower time-to-first-token (0.00s vs 0.34s).

When should I use GLM-5-Turbo vs gpt-oss-20B (high)?

Choose based on your priorities: GLM-5-Turbo for lower cost, GLM-5-Turbo for stronger benchmark performance, and gpt-oss-20B (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.