Compare/DeepSeek V3.1 Terminus (Reasoning) vs Llama 3 Instruct 70B

DeepSeek V3.1 Terminus (Reasoning)vsLlama 3 Instruct 70B

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

DeepSeek

DeepSeek V3.1 Terminus (Reasoning)

Input
$1.635/M
Output
$2.75/M
Speed
TTFT
Meta

Llama 3 Instruct 70B

Input
$0.65/M
Output
$2.75/M
Speed
46 tok/s
TTFT
0.70s

Winner by Category

Cheaper
Llama 3 Instruct 70B
Faster (tok/s)
Llama 3 Instruct 70B
Lower Latency
DeepSeek V3.1 Terminus (Reasoning)
Benchmarks (11-1)
DeepSeek V3.1 Terminus (Reasoning)

Pricing Comparison

MetricDeepSeek V3.1 Terminus (Reasoning)Llama 3 Instruct 70B
Input ($/M tokens)$1.635$0.65
Output ($/M tokens)$2.75$2.75
Cost for 1M input + 100K output tokens:
DeepSeek V3.1 Terminus (Reasoning)$1.91
Llama 3 Instruct 70B$0.93

Speed Comparison

Output Speed (tokens/s) — higher is better
DeepSeek V3.1 Terminus (Reasoning)
Llama 3 Instruct 70B
46 tok/s
Time to First Token (seconds) — lower is better
DeepSeek V3.1 Terminus (Reasoning)
Llama 3 Instruct 70B
0.70s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
33.98.9
Coding Index
33.76.8
Math Index
89.7
GPQA Diamond
79.2%37.9%
MMLU-Pro
85.1%57.4%
LiveCodeBench
79.8%19.8%
AIME 2025
89.7%
MATH-500
48.3%
Humanity's Last Exam
15.2%4.4%
SciCode
40.6%18.9%
IFBench
57.0%37.1%
TerminalBench
30.3%0.8%
DeepSeek V3.1 Terminus (Reasoning)11 wins
1 winsLlama 3 Instruct 70B

Frequently Asked Questions

Which is cheaper, DeepSeek V3.1 Terminus (Reasoning) or Llama 3 Instruct 70B?

Llama 3 Instruct 70B is cheaper overall. Its blended price (3:1 input/output ratio) is $1.18/M tokens vs $1.91/M for DeepSeek V3.1 Terminus (Reasoning).

Which model performs better on benchmarks?

DeepSeek V3.1 Terminus (Reasoning) wins 11 out of 12 benchmarks compared to 1 for Llama 3 Instruct 70B. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Llama 3 Instruct 70B generates tokens faster at 46 tok/s vs 0 tok/s. DeepSeek V3.1 Terminus (Reasoning) also has lower time-to-first-token (0.00s vs 0.70s).

When should I use DeepSeek V3.1 Terminus (Reasoning) vs Llama 3 Instruct 70B?

Choose based on your priorities: Llama 3 Instruct 70B for lower cost, DeepSeek V3.1 Terminus (Reasoning) for stronger benchmark performance, and Llama 3 Instruct 70B for faster generation. For latency-sensitive apps, check the TTFT comparison above.