Updated March 26, 2026· Based on independent benchmark data
GPT-5.2 (xhigh) leads in intelligence with a score of 51.3 vs 47.7. For speed, GPT-5.1 (high) wins at 92 tok/s vs 70 tok/s.
| Metric | GPT-5.2 (xhigh) | GPT-5.1 (high) |
|---|---|---|
| Intelligence Score | 51.3 | 47.7 |
| Coding Score | 48.7 | 44.7 |
| Math Score | 99.0 | 94.0 |
| Speed (tok/s) | 70 tok/s | 92 tok/s |
| Latency (TTFT) | 75.24s | 39.04s |
| Input Price / 1M tokens | $1.75 | $1.25 |
| Output Price / 1M tokens | $14 | $10 |
| Context Window | N/A | N/A |
GPT-5.2 (xhigh) outperforms GPT-5.1 (high) on the intelligence index with a score of 51.3 compared to 47.7. For coding tasks, GPT-5.2 (xhigh) has the edge with a coding score of 48.7 vs 44.7. In mathematical reasoning, GPT-5.2 (xhigh) leads with 99.0 compared to GPT-5.1 (high)'s 94.0.
GPT-5.1 (high) generates output significantly faster at 92 tok/s compared to GPT-5.2 (xhigh)'s 70 tok/s, making it 1.3x faster for streaming responses. Time to first token is 39.04s for GPT-5.1 (high) vs 75.24s for GPT-5.2 (xhigh), which affects perceived responsiveness in interactive applications.
GPT-5.1 (high) is more affordable at $1.25/1M input tokens ($10/1M output), while GPT-5.2 (xhigh) costs $1.75/1M input ($14/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, GPT-5.2 (xhigh) would cost approximately $10.50/month vs $7.50/month for GPT-5.1 (high) in input costs alone.
Choose GPT-5.2 (xhigh) when you need higher intelligence (51.3), stronger coding performance (48.7). Choose GPT-5.1 (high) when you need faster output (92 tok/s).
GPT-5.2 (xhigh) scores higher on coding benchmarks (48.7 vs 44.7), making it the better choice for programming tasks.
GPT-5.1 (high) is cheaper at $1.25/1M input tokens vs $1.75/1M for GPT-5.2 (xhigh).
GPT-5.1 (high) is faster, producing output at 92 tok/s compared to GPT-5.2 (xhigh)'s 70 tok/s.
No, GPT-5.2 (xhigh) does not support image input. Neither model supports image input.
Data last synced: March 26, 2026
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Text |
| Output Modalities | Text | Text |
| Free Tier | No | No |
It depends on your priorities. GPT-5.2 (xhigh) scores higher on intelligence (51.3), but GPT-5.1 (high) may be better for specific use cases like budget-conscious projects or speed-critical applications.