Compare/DeepSeek V3.1 (Reasoning) vs GPT-4.1 mini

DeepSeek V3.1 (Reasoning)vsGPT-4.1 mini

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
OpenAI

GPT-4.1 mini

Input
$0.4/M
Output
$1.6/M
Speed
83 tok/s
TTFT
0.63s

Winner by Category

Cheaper
GPT-4.1 mini
Faster (tok/s)
GPT-4.1 mini
Lower Latency
DeepSeek V3.1 (Reasoning)
Benchmarks (10-2)
DeepSeek V3.1 (Reasoning)

Pricing Comparison

MetricDeepSeek V3.1 (Reasoning)GPT-4.1 mini
Input ($/M tokens)$0.6$0.4
Output ($/M tokens)$1.7$1.6
Cost for 1M input + 100K output tokens:
DeepSeek V3.1 (Reasoning)$0.77
GPT-4.1 mini$0.56

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek V3.1 (Reasoning)
GPT-4.1 mini
83 tok/s
Time to First Token (seconds) — lower is better
DeepSeek V3.1 (Reasoning)
GPT-4.1 mini
0.63s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
27.722.9
Coding Index
29.718.5
Math Index
89.746.3
GPQA Diamond
77.9%66.4%
MMLU-Pro
85.1%78.1%
LiveCodeBench
78.4%48.3%
AIME 2025
89.7%46.3%
MATH-500
92.5%
Humanity's Last Exam
13.0%4.6%
SciCode
39.1%40.4%
IFBench
41.5%38.3%
TerminalBench
25.0%7.6%
DeepSeek V3.1 (Reasoning)10 wins
2 winsGPT-4.1 mini

Frequently Asked Questions

Which is cheaper, DeepSeek V3.1 (Reasoning) or GPT-4.1 mini?

GPT-4.1 mini is cheaper overall. Its blended price (3:1 input/output ratio) is $0.70/M tokens vs $0.88/M for DeepSeek V3.1 (Reasoning).

Which model performs better on benchmarks?

DeepSeek V3.1 (Reasoning) wins 10 out of 12 benchmarks compared to 2 for GPT-4.1 mini. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-4.1 mini generates tokens faster at 83 tok/s vs 0 tok/s. DeepSeek V3.1 (Reasoning) also has lower time-to-first-token (0.00s vs 0.63s).

When should I use DeepSeek V3.1 (Reasoning) vs GPT-4.1 mini?

Choose based on your priorities: GPT-4.1 mini for lower cost, DeepSeek V3.1 (Reasoning) for stronger benchmark performance, and GPT-4.1 mini for faster generation. For latency-sensitive apps, check the TTFT comparison above.