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DeepSeek

DeepSeek V4 Pro

VS
OpenAI

GPT-5.4 mini

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

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, GPT-5.4 mini is the premium intelligence choice, scoring 2.3% higher on coding benchmarks. It also maintains strong cost efficiency. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, DeepSeek V4 Pro offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of GPT-5.4 mini fully justifies the cost.

Model Specs

DeepSeek V4 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
52.1%
Reasoning (gpqa-diamond)Winner (+0.5%)
88%

Cost & Performance

Cost (per 1M tokens)
$2.17Input: $1.74 | Output: $3.48
Speed
39.7 tps
Context WindowLarger
1M tokens
Model Specs

GPT-5.4 mini

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+2.3%)
54.4%
Reasoning (gpqa-diamond)
87.5%

Cost & Performance

Cost (per 1M tokens)1.3x cheaper
$1.69Input: $0.75 | Output: $4.50
Speed5.1x faster
201 tps
Context Window
400k tokens
Read our data collection methodology

Frequently Asked Questions

GPT-5.4 mini is cheaper than DeepSeek V4 Pro. GPT-5.4 mini has a blended cost of $1.69/1M tokens, which is about 1.3x cheaper than DeepSeek V4 Pro at $2.17/1M tokens.

GPT-5.4 mini is faster than DeepSeek V4 Pro. GPT-5.4 mini generates 201 tokens per second (tps) compared to DeepSeek V4 Pro which generates 39.7 tokens per second.

GPT-5.4 mini is better for coding tasks. It scores 54.4% on coding evaluations (swe-bench-pro) compared to DeepSeek V4 Pro which scores 52.1%.

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