Updated March 26, 2026· Based on independent benchmark data
GPT-5.4 (xhigh) leads in intelligence with a score of 57.2 vs 41.5. For speed, GPT-5.4 (xhigh) wins at 77 tok/s vs 44 tok/s.
| Metric | Grok 4 | GPT-5.4 (xhigh) |
|---|---|---|
| Intelligence Score | 41.5 | 57.2 |
| Coding Score | 40.5 | 57.3 |
| Math Score | 92.7 | N/A |
| Speed (tok/s) | 44 tok/s | 77 tok/s |
| Latency (TTFT) | 8.55s | 181.82s |
| Input Price / 1M tokens | $3.00 | $2.50 |
| Output Price / 1M tokens | $15 | $15 |
| Context Window | 256K | N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Image + Text | Text |
GPT-5.4 (xhigh) outperforms Grok 4 on the intelligence index with a score of 57.2 compared to 41.5. For coding tasks, GPT-5.4 (xhigh) has the edge with a coding score of 57.3 vs 40.5.
GPT-5.4 (xhigh) generates output significantly faster at 77 tok/s compared to Grok 4's 44 tok/s, making it 1.8x faster for streaming responses. Time to first token is 8.55s for Grok 4 vs 181.82s for GPT-5.4 (xhigh), which affects perceived responsiveness in interactive applications.
GPT-5.4 (xhigh) is more affordable at $2.50/1M input tokens ($15/1M output), while Grok 4 costs $3.00/1M input ($15/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, Grok 4 would cost approximately $18.00/month vs $15.00/month for GPT-5.4 (xhigh) in input costs alone.
Choose GPT-5.4 (xhigh) when you need higher intelligence (57.2), stronger coding performance (57.3), faster output (77 tok/s).
GPT-5.4 (xhigh) scores higher on coding benchmarks (57.3 vs 40.5), making it the better choice for programming tasks.
GPT-5.4 (xhigh) is cheaper at $2.50/1M input tokens vs $3.00/1M for Grok 4.
GPT-5.4 (xhigh) is faster, producing output at 77 tok/s compared to Grok 4's 44 tok/s.
Yes, Grok 4 supports image input. GPT-5.4 (xhigh) does not support image input.
Data last synced: March 26, 2026
| Output Modalities |
| Text |
| Text |
| Free Tier | No | No |
It depends on your priorities. GPT-5.4 (xhigh) scores higher on intelligence (57.2), but Grok 4 may be better for specific use cases like budget-conscious projects or speed-critical applications.