Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Qwen3.5 2B (Reasoning) | Llama 3.1 Instruct 8B |
|---|---|---|
| Input ($/M tokens) | $0.02 | $0.1 |
| Output ($/M tokens) | $0.1 | $0.1 |
Data from Artificial Analysis API — 12 benchmarks
Qwen3.5 2B (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.04/M tokens vs $0.10/M for Llama 3.1 Instruct 8B.
Llama 3.1 Instruct 8B wins 8 out of 12 benchmarks compared to 4 for Qwen3.5 2B (Reasoning). See the detailed benchmark chart above for per-category results.
Qwen3.5 2B (Reasoning) generates tokens faster at 357 tok/s vs 183 tok/s. However, Llama 3.1 Instruct 8B has lower time-to-first-token (0.43s vs 0.54s).
Choose based on your priorities: Qwen3.5 2B (Reasoning) for lower cost, Llama 3.1 Instruct 8B for stronger benchmark performance, and Qwen3.5 2B (Reasoning) for faster generation. For latency-sensitive apps, check the TTFT comparison above.