Updated March 26, 2026· Based on independent benchmark data
GPT-5.3 Codex (xhigh) is 2.9x cheaper at $1.75/1M tokens vs $5.00/1M.
| Metric | OpenAI: GPT-5.6 Sol Pro | 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) | N/A | 72 tok/s |
| Latency (TTFT) | N/A | 83.91s |
| Input Price / 1M tokens | $5.00 | $1.75 |
| Output Price / 1M tokens | $30 | $14 |
| Context Window | 1.1M | N/A |
| Max Output Tokens | 128K | N/A |
| Input Modalities | File + Image + Text | Text |
| Output Modalities | Text | Text |
| Free Tier | No | No |
GPT-5.3 Codex (xhigh) is more affordable at $1.75/1M input tokens ($14/1M output), while OpenAI: GPT-5.6 Sol Pro costs $5.00/1M input ($30/1M output). That makes OpenAI: GPT-5.6 Sol Pro 2.9x 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, OpenAI: GPT-5.6 Sol Pro would cost approximately $30.00/month vs $10.50/month for GPT-5.3 Codex (xhigh) in input costs alone.
Choose GPT-5.3 Codex (xhigh) when you need lower cost.
GPT-5.3 Codex (xhigh) is cheaper at $1.75/1M input tokens vs $5.00/1M for OpenAI: GPT-5.6 Sol Pro.
Yes, OpenAI: GPT-5.6 Sol Pro supports image input. GPT-5.3 Codex (xhigh) does not support image input.
Data last synced: March 26, 2026