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DeepSeek

DeepSeek V4 Flash

VS
Z.ai (Zhipu AI)

GLM-4.5

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

👑 Editorial Verdict: DeepSeek V4 Flash strictly dominates GLM-4.5 across all major dimensions. It is not only more cost-effective (blended cost of $0.17 vs $1.00 per 1M tokens) but also delivers superior coding accuracy (49.1% vs 0% on SWE-bench) and faster generation speeds (109.1 tps vs 0 tps). Unless you have platform lock-in, DeepSeek V4 Flash is the clear and optimal choice for all development workloads.

Model Specs

DeepSeek V4 Flash

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
49.1%
Reasoning (gpqa-diamond)Winner (+0.1%)
80%

Cost & Performance

Cost (per 1M tokens)5.7x cheaper
$0.17Input: $0.14 | Output: $0.28
Speed
109.1 tps
Context WindowLarger
1M tokens
Model Specs

GLM-4.5

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
79.9%

Cost & Performance

Cost (per 1M tokens)
$1.00Input: $0.60 | Output: $2.20
Speed
N/A
Context Window
131.07k tokens
Read our data collection methodology

Frequently Asked Questions

DeepSeek V4 Flash is cheaper than GLM-4.5. DeepSeek V4 Flash has a blended cost of $0.17/1M tokens, which is about 5.7x cheaper than GLM-4.5 at $1.00/1M tokens.

Speed data is not available for GLM-4.5, while DeepSeek V4 Flash generates 109.1 tokens per second.

DeepSeek V4 Flash is better for coding tasks. It scores 49.1% on coding evaluations (swe-bench-pro) compared to GLM-4.5 which scores N/A.

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