Updated March 26, 2026· Based on independent benchmark data
GPT-5.3 Codex (xhigh) leads in intelligence with a score of 54.0 vs 13.7. GPT-5.3 Codex (xhigh) is 5.7x cheaper at $1.75/1M tokens vs $10/1M. For speed, GPT-5.3 Codex (xhigh) wins at 72 tok/s vs 23 tok/s.
| Metric | GPT-4 Turbo | GPT-5.3 Codex (xhigh) |
|---|---|---|
| Intelligence Score | 13.7 | 54.0 |
| Coding Score | 21.5 | 53.1 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 23 tok/s | 72 tok/s |
| Latency (TTFT) | 1.00s | 83.91s |
| Input Price / 1M tokens | $10 | $1.75 |
| Output Price / 1M tokens | $30 | $14 |
| Context Window | 128K |
GPT-5.3 Codex (xhigh) outperforms GPT-4 Turbo on the intelligence index with a score of 54.0 compared to 13.7. For coding tasks, GPT-5.3 Codex (xhigh) has the edge with a coding score of 53.1 vs 21.5.
GPT-5.3 Codex (xhigh) generates output significantly faster at 72 tok/s compared to GPT-4 Turbo's 23 tok/s, making it 3.1x faster for streaming responses. Time to first token is 1.00s for GPT-4 Turbo 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 Turbo costs $10/1M input ($30/1M output). That makes GPT-4 Turbo 5.7x 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 Turbo would cost approximately $60.00/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 21.5), making it the better choice for programming tasks.
GPT-5.3 Codex (xhigh) is cheaper at $1.75/1M input tokens vs $10/1M for GPT-4 Turbo.
GPT-5.3 Codex (xhigh) is faster, producing output at 72 tok/s compared to GPT-4 Turbo's 23 tok/s.
Yes, GPT-4 Turbo supports image input. GPT-5.3 Codex (xhigh) does not support image input.
Data last synced: March 26, 2026
| N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text + Image | 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 Turbo may be better for specific use cases like budget-conscious projects or speed-critical applications.