Updated March 26, 2026· Based on independent benchmark data
GPT-5.3 Codex (xhigh) leads in intelligence with a score of 54.0 vs 7.7. Apertus 70B Instruct is 2.1x cheaper at $0.82/1M tokens vs $1.75/1M.
| Metric | Apertus 70B Instruct | GPT-5.3 Codex (xhigh) |
|---|---|---|
| Intelligence Score | 7.7 | 54.0 |
| Coding Score | 1.9 | 53.1 |
| Math Score | N/A | N/A |
| Speed (tok/s) | 63 tok/s | 72 tok/s |
| Latency (TTFT) | 1.61s | 83.91s |
| Input Price / 1M tokens | $0.82 | $1.75 |
| Output Price / 1M tokens | $2.92 | $14 |
| Context Window | N/A |
GPT-5.3 Codex (xhigh) outperforms Apertus 70B Instruct on the intelligence index with a score of 54.0 compared to 7.7. For coding tasks, GPT-5.3 Codex (xhigh) has the edge with a coding score of 53.1 vs 1.9.
Both models deliver similar output speeds: Apertus 70B Instruct at 63 tok/s and GPT-5.3 Codex (xhigh) at 72 tok/s. Time to first token is 1.61s for Apertus 70B Instruct vs 83.91s for GPT-5.3 Codex (xhigh), which affects perceived responsiveness in interactive applications.
Apertus 70B Instruct is more affordable at $0.82/1M input tokens ($2.92/1M output), while GPT-5.3 Codex (xhigh) costs $1.75/1M input ($14/1M output). That makes GPT-5.3 Codex (xhigh) 2.1x 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, Apertus 70B Instruct would cost approximately $4.92/month vs $10.50/month for GPT-5.3 Codex (xhigh) in input costs alone.
Choose Apertus 70B Instruct when you need lower cost. Choose GPT-5.3 Codex (xhigh) when you need higher intelligence (54.0), stronger coding performance (53.1).
GPT-5.3 Codex (xhigh) scores higher on coding benchmarks (53.1 vs 1.9), making it the better choice for programming tasks.
Apertus 70B Instruct is cheaper at $0.82/1M input tokens vs $1.75/1M for GPT-5.3 Codex (xhigh).
GPT-5.3 Codex (xhigh) is faster, producing output at 72 tok/s compared to Apertus 70B Instruct's 63 tok/s.
No, Apertus 70B Instruct does not support image input. Neither model supports image input.
Data last synced: March 26, 2026
| N/A |
| 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 Apertus 70B Instruct may be better for specific use cases like budget-conscious projects or speed-critical applications.