Updated March 26, 2026· Based on independent benchmark data
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 0 tok/s.
| Metric | GPT-5.4 Pro (xhigh) | GPT-5.3 Codex (xhigh) |
|---|---|---|
| Intelligence Score | N/A | 54.0 |
| Coding Score | N/A | 53.1 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 0 tok/s | 72 tok/s |
| Latency (TTFT) | 0.00s | 83.91s |
| Input Price / 1M tokens | $30 | $1.75 |
| Output Price / 1M tokens | $180 | $14 |
| Context Window | N/A | N/A |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text | Text |
| Output Modalities |
GPT-5.3 Codex (xhigh) generates output significantly faster at 72 tok/s compared to GPT-5.4 Pro (xhigh)'s 0 tok/s, making it Infinityx faster for streaming responses. Time to first token is 0.00s for GPT-5.4 Pro (xhigh) 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-5.4 Pro (xhigh) costs $30/1M input ($180/1M output). That makes GPT-5.4 Pro (xhigh) 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-5.4 Pro (xhigh) 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 faster output (72 tok/s), lower cost.
GPT-5.3 Codex (xhigh) is cheaper at $1.75/1M input tokens vs $30/1M for GPT-5.4 Pro (xhigh).
GPT-5.3 Codex (xhigh) is faster, producing output at 72 tok/s compared to GPT-5.4 Pro (xhigh)'s 0 tok/s.
No, GPT-5.4 Pro (xhigh) does not support image input. Neither model supports image input.
Data last synced: March 26, 2026
| Text |
| Text |
| Free Tier | No | No |