Side-by-side comparison of pricing, 12 benchmarks, and generation speed.
| Metric | GPT-5.5 (medium) | Grok-1 |
|---|---|---|
| Input ($/M tokens) | $5 | $0 |
| Output ($/M tokens) | $30 | $0 |
Data from Artificial Analysis API — 12 benchmarks
Grok-1 is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $11.25/M for GPT-5.5 (medium).
GPT-5.5 (medium) wins 7 out of 12 benchmarks compared to 0 for Grok-1. See the detailed benchmark chart above for per-category results.
Both models have comparable generation speeds.
Choose based on your priorities: Grok-1 for lower cost, GPT-5.5 (medium) for stronger benchmark performance, and both have comparable speed. For latency-sensitive apps, check the TTFT comparison above.