Model Comparator
Compare up to four models using the same criteria.
2 models compared
- GPT-5.1 (High)
OpenAI
- GPT-5 Codex (High)
OpenAI
✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.
| Metrics | GPT-5.1 (High) OpenAI | GPT-5 Codex (High) OpenAI | Add a model · 2/4 |
|---|---|---|---|
| Intelligence | 24.7 | Best: 24.9 | |
| Coding | 49.4 | — | |
| Math | 94 | Best: 98.7 | |
| Speed | 112 t/s | Best: 166 t/s | |
| TTFT | 27.3 s | Best: 6.71 s | |
| Input · $ / 1M tokens | $1.25 | $1.25 | |
| Output · $ / 1M tokens | $10 | $10 | |
| Context window | 400K | 400K | |
| Reasoning | Yes | Yes | |
| Open weights | No | No |
Intelligence
- GPT-5.1 (High)
- 24.7
- GPT-5 Codex (High)
- Best: 24.9
Coding
- GPT-5.1 (High)
- 49.4
- GPT-5 Codex (High)
- —
Math
- GPT-5.1 (High)
- 94
- GPT-5 Codex (High)
- Best: 98.7
Speed
- GPT-5.1 (High)
- 112 t/s
- GPT-5 Codex (High)
- Best: 166 t/s
TTFT
- GPT-5.1 (High)
- 27.3 s
- GPT-5 Codex (High)
- Best: 6.71 s
Input · $ / 1M tokens
- GPT-5.1 (High)
- $1.25
- GPT-5 Codex (High)
- $1.25
Output · $ / 1M tokens
- GPT-5.1 (High)
- $10
- GPT-5 Codex (High)
- $10
Context window
- GPT-5.1 (High)
- 400K
- GPT-5 Codex (High)
- 400K
Reasoning
- GPT-5.1 (High)
- Yes
- GPT-5 Codex (High)
- Yes
Open weights
- GPT-5.1 (High)
- No
- GPT-5 Codex (High)
- No
Each reasoning level remains a separate configuration.
Score and cost
Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.
- GPT-5.1 (High)24.7 · $3.44
- GPT-5 Codex (High)24.9 · $3.44