Compare/DeepSeek V3.1 Terminus (Non-reasoning) vs Grok Code Fast 1

DeepSeek V3.1 Terminus (Non-reasoning)vsGrok Code Fast 1

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

DeepSeek

DeepSeek V3.1 Terminus (Non-reasoning)

Input
$0.335/M
Output
$1.5/M
Speed
TTFT
xAI

Grok Code Fast 1

Input
$0.2/M
Output
$1.5/M
Speed
186 tok/s
TTFT
2.79s

Winner by Category

Cheaper
Grok Code Fast 1
Faster (tok/s)
Grok Code Fast 1
Lower Latency
DeepSeek V3.1 Terminus (Non-reasoning)
Benchmarks (7-4)
DeepSeek V3.1 Terminus (Non-reasoning)

Pricing Comparison

MetricDeepSeek V3.1 Terminus (Non-reasoning)Grok Code Fast 1
Input ($/M tokens)$0.335$0.2
Output ($/M tokens)$1.5$1.5
Cost for 1M input + 100K output tokens:
DeepSeek V3.1 Terminus (Non-reasoning)$0.49
Grok Code Fast 1$0.35

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek V3.1 Terminus (Non-reasoning)
Grok Code Fast 1
186 tok/s
Time to First Token (seconds) — lower is better
DeepSeek V3.1 Terminus (Non-reasoning)
Grok Code Fast 1
2.79s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
28.528.7
Coding Index
31.923.7
Math Index
53.743.3
GPQA Diamond
75.1%72.7%
MMLU-Pro
83.6%79.3%
LiveCodeBench
52.9%65.7%
AIME 2025
53.7%43.3%
MATH-500
Humanity's Last Exam
8.4%7.5%
SciCode
32.1%36.2%
IFBench
41.2%41.4%
TerminalBench
31.8%17.4%
DeepSeek V3.1 Terminus (Non-reasoning)7 wins
4 winsGrok Code Fast 1

Frequently Asked Questions

Which is cheaper, DeepSeek V3.1 Terminus (Non-reasoning) or Grok Code Fast 1?

Grok Code Fast 1 is cheaper overall. Its blended price (3:1 input/output ratio) is $0.53/M tokens vs $0.63/M for DeepSeek V3.1 Terminus (Non-reasoning).

Which model performs better on benchmarks?

DeepSeek V3.1 Terminus (Non-reasoning) wins 7 out of 12 benchmarks compared to 4 for Grok Code Fast 1. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Grok Code Fast 1 generates tokens faster at 186 tok/s vs 0 tok/s. DeepSeek V3.1 Terminus (Non-reasoning) also has lower time-to-first-token (0.00s vs 2.79s).

When should I use DeepSeek V3.1 Terminus (Non-reasoning) vs Grok Code Fast 1?

Choose based on your priorities: Grok Code Fast 1 for lower cost, DeepSeek V3.1 Terminus (Non-reasoning) for stronger benchmark performance, and Grok Code Fast 1 for faster generation. For latency-sensitive apps, check the TTFT comparison above.