Compare/Qwen3.5 4B (Reasoning) vs Llama 3 Instruct 8B

Qwen3.5 4B (Reasoning)vsLlama 3 Instruct 8B

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

Alibaba

Qwen3.5 4B (Reasoning)

Input
$0.03/M
Output
$0.15/M
Speed
225 tok/s
TTFT
0.29s
Meta

Llama 3 Instruct 8B

Input
$0.045/M
Output
$0.145/M
Speed
82 tok/s
TTFT
0.38s

Winner by Category

Cheaper
Qwen3.5 4B (Reasoning)
Faster (tok/s)
Qwen3.5 4B (Reasoning)
Lower Latency
Qwen3.5 4B (Reasoning)
Benchmarks (7-3)
Qwen3.5 4B (Reasoning)

Pricing Comparison

MetricQwen3.5 4B (Reasoning)Llama 3 Instruct 8B
Input ($/M tokens)$0.03$0.045
Output ($/M tokens)$0.15$0.145
Cost for 1M input + 100K output tokens:
Qwen3.5 4B (Reasoning)$0.04
Llama 3 Instruct 8B$0.06

Speed Comparison

Output Speed (tokens/s) — higher is better
Qwen3.5 4B (Reasoning)
225 tok/s
Llama 3 Instruct 8B
82 tok/s
Time to First Token (seconds) — lower is better
Qwen3.5 4B (Reasoning)
0.29s
Llama 3 Instruct 8B
0.38s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
27.16.4
Coding Index
17.54.0
Math Index
GPQA Diamond
77.1%29.6%
MMLU-Pro
40.5%
LiveCodeBench
9.6%
AIME 2025
MATH-500
49.9%
Humanity's Last Exam
7.8%5.1%
SciCode
16.1%11.9%
IFBench
52.0%24.6%
TerminalBench
18.2%0.0%
Qwen3.5 4B (Reasoning)7 wins
3 winsLlama 3 Instruct 8B

Frequently Asked Questions

Which is cheaper, Qwen3.5 4B (Reasoning) or Llama 3 Instruct 8B?

Qwen3.5 4B (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.06/M tokens vs $0.07/M for Llama 3 Instruct 8B.

Which model performs better on benchmarks?

Qwen3.5 4B (Reasoning) wins 7 out of 12 benchmarks compared to 3 for Llama 3 Instruct 8B. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Qwen3.5 4B (Reasoning) generates tokens faster at 225 tok/s vs 82 tok/s. Qwen3.5 4B (Reasoning) also has lower time-to-first-token (0.29s vs 0.38s).

When should I use Qwen3.5 4B (Reasoning) vs Llama 3 Instruct 8B?

Choose based on your priorities: Qwen3.5 4B (Reasoning) for lower cost, Qwen3.5 4B (Reasoning) for stronger benchmark performance, and Qwen3.5 4B (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.