GPT-5 Pro vs Grok 4
GPT-5 Pro 
Grok 4 Verdict
- GPT-5 Pro leads on quality: 60.8 vs 59.8.
- GPT-5 Pro is stronger in knowledge, multimodal.
- Grok 4 is stronger in reasoning, agents & tools, coding, human preference, instruction following, long context, maths.
- Grok 4 is 26× cheaper ($1.56 vs $41.25 per 1M blended).
| Metric | GPT-5 Pro | Grok 4 |
|---|---|---|
| BenchLeader Index | 60.8 | 59.8 |
| Knowledge score | 68.0 | 56.0 |
| Multimodal score | 67.4 | 54.5 |
| Reasoning score | 57.6 | 58.3 |
| Agents & tools score | – | 53.4 |
| Coding score | – | 61.2 |
| Human preference score | – | 59.8 |
| Instruction following score | – | 67.7 |
| Long context score | – | 77.7 |
| Maths score | – | 58.0 |
| Blended price $/M | $41.25 | $1.56 |
| Context window | 400k | 256k |
| GPQA Diamond | – | 87.0% |
| OTIS Mock AIME | – | 84.0% |
| Humanity's Last Exam | 31.6% | – |
| Terminal-Bench | – | 27.2% |
| SimpleBench | 61.6% | 60.5% |
| Fiction.LiveBench 120k | – | 96.9% |
| Cybench | – | 43.0% |
| WeirdML | – | 45.7% |
| APEX-Agents | – | 15.2% |
| Epoch Capabilities Index | 150.3 | 146.4 |
| LMArena Text | – | 1411 |
| LMArena Hard Prompts | – | 1420 |
| LMArena Coding | – | 1435 |
| LMArena Vision | – | 1210 |
| AIME (Vals) | – | 90.6% |
| LiveCodeBench | – | 83.3% |
| MMLU-Pro | – | 85.3% |
| LegalBench | – | 83.2% |
| CorpFin | – | 66.0% |
| TaxEval | – | 65.1% |
| MedQA | – | 92.5% |
| MGSM | – | 90.9% |
| SWE-bench (Vals) | – | 57.8% |
| GPQA Diamond (Vals) | – | 88.1% |
| IMO 2025 | – | 21.4% |
| MathArena Apex | – | 2.1% |
| PRBench Finance | 51.1% | – |
| PRBench Legal | 49.9% | – |
| VISTA | 52.4% | – |
| MultiNRC | 65.2% | – |
| Kagi LLM Benchmark | 76.8% | 73.6% |
| IFEval (HELM) | – | 94.9% |
| Omni-MATH (HELM) | – | 60.3% |
| WildBench (HELM) | – | 79.7% |
| MMLU-Pro (HELM) | – | 85.1% |
| GPQA Diamond (HELM) | – | 72.6% |
| HELM Capabilities mean | – | 78.5% |
| Aider Polyglot | – | 79.6% |
| ARC-AGI-1 | 70.2% | 79.6% |
| ARC-AGI-2 | 18.3% | 29.4% |
| BFCL Overall | – | 63.0% |
Data as of 2026-09-13. Best configuration of each model; every score links to its source on the model pages.
GPT-5 Pro vs Grok 4: questions
- Is GPT-5 Pro better than Grok 4?
- GPT-5 Pro leads on quality: 60.8 vs 59.8. The BenchLeader Index combines every independent quality benchmark; GPT-5 Pro is ahead overall as of 2026-09-13, but check the category scores for your use.
- Which is cheaper, GPT-5 Pro or Grok 4?
- Grok 4 is cheaper: $1.56 against $41.25 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- GPT-5 Pro accepts more context: 400k against 256k tokens.