Model comparison
GPT-5.2 Pro vs Grok 4 Heavy
GPT-5.2 Pro has enough public results to be ranked (#39); Grok 4 Heavy does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both.
Side by side
| GPT-5.2 Pro | Grok 4 Heavy | |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 52.3 | — |
| Released | 2025-12-11 | 2025-07-10 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $21 | — |
| Output $ / M tokens | $168 | — |
| Results tracked | 8 | 1 |
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Category by category
Reasoning Not comparable
GPT-5.2 Pro: 51.5 (#33), Grok 4 Heavy: —
| Benchmark | GPT-5.2 Pro | Grok 4 Heavy |
|---|---|---|
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| NYT Connections (extended) | 79.3% | — |
| ARC-AGI-1 | 90.5% | — |
| Epoch Capabilities Index | 155.4 | — |
Math Not comparable
GPT-5.2 Pro: 65.3 (#29), Grok 4 Heavy: —
| Benchmark | GPT-5.2 Pro | Grok 4 Heavy |
|---|---|---|
| FrontierMath Tier 4 (v1) | 31.3% | 2.1% |
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
Frequently asked questions
Is GPT-5.2 Pro better than Grok 4 Heavy?
GPT-5.2 Pro has enough public results to be ranked (#39); Grok 4 Heavy does not yet, so treat this comparison as directional.
How many benchmarks do GPT-5.2 Pro and Grok 4 Heavy share?
1 benchmark has published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Grok 4 Heavy has 1.