Updated March 26, 2026· Based on independent benchmark data
GPT-5.3 Codex (xhigh) leads in intelligence with a score of 54.0 vs 12.8. GPT-5.3 Codex (xhigh) is 17.1x cheaper at $1.75/1M tokens vs $30/1M. For speed, GPT-5.3 Codex (xhigh) wins at 72 tok/s vs 33 tok/s.
| Metric | GPT-4 | GPT-5.3 Codex (xhigh) |
|---|---|---|
| Intelligence Score | 12.8 | 54.0 |
| Coding Score | 13.1 | 53.1 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 33 tok/s | 72 tok/s |
| Latency (TTFT) | 0.74s | 83.91s |
| Input Price / 1M tokens | $30 | $1.75 |
| Output Price / 1M tokens | $60 | $14 |
| Context Window | 8K | N/A |
GPT-5.3 Codex (xhigh) outperforms GPT-4 on the intelligence index with a score of 54.0 compared to 12.8. For coding tasks, GPT-5.3 Codex (xhigh) has the edge with a coding score of 53.1 vs 13.1.
GPT-5.3 Codex (xhigh) generates output significantly faster at 72 tok/s compared to GPT-4's 33 tok/s, making it 2.2x faster for streaming responses. Time to first token is 0.74s for GPT-4 vs 83.91s for GPT-5.3 Codex (xhigh), which affects perceived responsiveness in interactive applications.
GPT-5.3 Codex (xhigh) is more affordable at $1.75/1M input tokens ($14/1M output), while GPT-4 costs $30/1M input ($60/1M output). That makes GPT-4 17.1x more expensive per token, which can add up significantly at scale. For a typical workload of 100 requests per day at 2,000 tokens each, GPT-4 would cost approximately $180.00/month vs $10.50/month for GPT-5.3 Codex (xhigh) in input costs alone.
Choose GPT-5.3 Codex (xhigh) when you need higher intelligence (54.0), stronger coding performance (53.1), faster output (72 tok/s), lower cost.
GPT-5.3 Codex (xhigh) scores higher on coding benchmarks (53.1 vs 13.1), making it the better choice for programming tasks.
GPT-5.3 Codex (xhigh) is cheaper at $1.75/1M input tokens vs $30/1M for GPT-4.
GPT-5.3 Codex (xhigh) is faster, producing output at 72 tok/s compared to GPT-4's 33 tok/s.
No, GPT-4 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-5.3 Codex (xhigh) scores higher on intelligence (54.0), but GPT-4 may be better for specific use cases like budget-conscious projects or speed-critical applications.