Compare/Grok 4.1 Fast (Non-reasoning) vs DeepSeek V3.2 (Reasoning)

Grok 4.1 Fast (Non-reasoning)vsDeepSeek V3.2 (Reasoning)

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

xAI

Grok 4.1 Fast (Non-reasoning)

Input
$0.2/M
Output
$0.5/M
Speed
87 tok/s
TTFT
0.43s
DeepSeek

DeepSeek V3.2 (Reasoning)

Input
$0.3/M
Output
$0.45/M
Speed
TTFT

Winner by Category

Cheaper
Grok 4.1 Fast (Non-reasoning)
Faster (tok/s)
Grok 4.1 Fast (Non-reasoning)
Lower Latency
DeepSeek V3.2 (Reasoning)
Benchmarks (0-11)
DeepSeek V3.2 (Reasoning)

Pricing Comparison

MetricGrok 4.1 Fast (Non-reasoning)DeepSeek V3.2 (Reasoning)
Input ($/M tokens)$0.2$0.3
Output ($/M tokens)$0.5$0.45
Cost for 1M input + 100K output tokens:
Grok 4.1 Fast (Non-reasoning)$0.25
DeepSeek V3.2 (Reasoning)$0.34

Speed Comparison

Output Speed (tokens/s) — higher is better
Grok 4.1 Fast (Non-reasoning)
87 tok/s
DeepSeek V3.2 (Reasoning)
Time to First Token (seconds) — lower is better
Grok 4.1 Fast (Non-reasoning)
0.43s
DeepSeek V3.2 (Reasoning)

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
23.641.7
Coding Index
19.536.7
Math Index
34.392.0
GPQA Diamond
63.7%84.0%
MMLU-Pro
74.3%86.2%
LiveCodeBench
39.9%86.2%
AIME 2025
34.3%92.0%
MATH-500
Humanity's Last Exam
5.0%22.2%
SciCode
29.6%38.9%
IFBench
36.5%60.7%
TerminalBench
14.4%35.6%
Grok 4.1 Fast (Non-reasoning)0 wins
11 winsDeepSeek V3.2 (Reasoning)

Frequently Asked Questions

Which is cheaper, Grok 4.1 Fast (Non-reasoning) or DeepSeek V3.2 (Reasoning)?

Grok 4.1 Fast (Non-reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.28/M tokens vs $0.34/M for DeepSeek V3.2 (Reasoning).

Which model performs better on benchmarks?

DeepSeek V3.2 (Reasoning) wins 11 out of 12 benchmarks compared to 0 for Grok 4.1 Fast (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Grok 4.1 Fast (Non-reasoning) generates tokens faster at 87 tok/s vs 0 tok/s. However, DeepSeek V3.2 (Reasoning) has lower time-to-first-token (0.00s vs 0.43s).

When should I use Grok 4.1 Fast (Non-reasoning) vs DeepSeek V3.2 (Reasoning)?

Choose based on your priorities: Grok 4.1 Fast (Non-reasoning) for lower cost, DeepSeek V3.2 (Reasoning) for stronger benchmark performance, and Grok 4.1 Fast (Non-reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.