Compare/DeepSeek V3.1 (Reasoning) vs GLM-4.5V (Reasoning)

DeepSeek V3.1 (Reasoning)vsGLM-4.5V (Reasoning)

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

DeepSeek

DeepSeek V3.1 (Reasoning)

Input
$0.6/M
Output
$1.7/M
Speed
TTFT
Z AI

GLM-4.5V (Reasoning)

Input
$0.6/M
Output
$1.8/M
Speed
56 tok/s
TTFT
0.98s

Winner by Category

Cheaper
DeepSeek V3.1 (Reasoning)
Faster (tok/s)
GLM-4.5V (Reasoning)
Lower Latency
DeepSeek V3.1 (Reasoning)
Benchmarks (11-0)
DeepSeek V3.1 (Reasoning)

Pricing Comparison

MetricDeepSeek V3.1 (Reasoning)GLM-4.5V (Reasoning)
Input ($/M tokens)$0.6$0.6
Output ($/M tokens)$1.7$1.8
Cost for 1M input + 100K output tokens:
DeepSeek V3.1 (Reasoning)$0.77
GLM-4.5V (Reasoning)$0.78

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek V3.1 (Reasoning)
GLM-4.5V (Reasoning)
56 tok/s
Time to First Token (seconds) — lower is better
DeepSeek V3.1 (Reasoning)
GLM-4.5V (Reasoning)
0.98s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
27.715.1
Coding Index
29.710.9
Math Index
89.773.0
GPQA Diamond
77.9%68.4%
MMLU-Pro
85.1%78.8%
LiveCodeBench
78.4%60.4%
AIME 2025
89.7%73.0%
MATH-500
Humanity's Last Exam
13.0%5.9%
SciCode
39.1%22.1%
IFBench
41.5%34.2%
TerminalBench
25.0%5.3%
DeepSeek V3.1 (Reasoning)11 wins
0 winsGLM-4.5V (Reasoning)

Frequently Asked Questions

Which is cheaper, DeepSeek V3.1 (Reasoning) or GLM-4.5V (Reasoning)?

DeepSeek V3.1 (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.88/M tokens vs $0.90/M for GLM-4.5V (Reasoning).

Which model performs better on benchmarks?

DeepSeek V3.1 (Reasoning) wins 11 out of 12 benchmarks compared to 0 for GLM-4.5V (Reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GLM-4.5V (Reasoning) generates tokens faster at 56 tok/s vs 0 tok/s. DeepSeek V3.1 (Reasoning) also has lower time-to-first-token (0.00s vs 0.98s).

When should I use DeepSeek V3.1 (Reasoning) vs GLM-4.5V (Reasoning)?

Choose based on your priorities: DeepSeek V3.1 (Reasoning) for lower cost, DeepSeek V3.1 (Reasoning) for stronger benchmark performance, and GLM-4.5V (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.