Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | Qwen2.5 Instruct 72B | Grok 4 Fast (Reasoning) |
|---|---|---|
| Input ($/M tokens) | $0.475 | $0.2 |
| Output ($/M tokens) | $0.495 | $0.5 |
Data from Artificial Analysis API — 12 benchmarks
Grok 4 Fast (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.28/M tokens vs $0.48/M for Qwen2.5 Instruct 72B.
Grok 4 Fast (Reasoning) wins 10 out of 12 benchmarks compared to 1 for Qwen2.5 Instruct 72B. See the detailed benchmark chart above for per-category results.
Both models have comparable generation speeds.
Choose based on your priorities: Grok 4 Fast (Reasoning) for lower cost, Grok 4 Fast (Reasoning) for stronger benchmark performance, and both have comparable speed. For latency-sensitive apps, check the TTFT comparison above.