GPT-5 Pro vs Grok 4.6
GPT-5 Pro 
Grok 4.6 Verdict
- Grok 4.6 (medium) leads on quality: 63.9 vs 60.8.
- GPT-5 Pro is stronger in multimodal.
- Grok 4.6 (medium) is stronger in knowledge, reasoning, coding, composite, long context.
- Grok 4.6 (medium) is 14× cheaper ($3.00 vs $41.25 per 1M blended).
| Metric | GPT-5 Pro | Grok 4.6 (medium) |
|---|---|---|
| BenchLeader Index | 60.8 | 63.9 |
| Knowledge score | 68.0 | 77.5 |
| Multimodal score | 67.4 | – |
| Reasoning score | 57.6 | 62.1 |
| Coding score | – | 64.1 |
| Composite score | – | 83.4 |
| Long context score | – | 67.1 |
| Blended price $/M | $41.25 | $3.00 |
| Output speed | – | 53 tok/s |
| Time to first answer | – | 33.4 s |
| Context window | 400k | 500k |
| Humanity's Last Exam | 31.6% | – |
| SimpleBench | 61.6% | – |
| SciCode | – | 54.6% |
| Epoch Capabilities Index | 150.3 | – |
| AA Intelligence Index | – | 43.0 |
| AA-LCR | – | 81.0% |
| AA-Omniscience | – | 28 |
| GPQA Diamond (AA) | – | 93.5% |
| Humanity's Last Exam (AA) | – | 42.1% |
| SciCode (AA) | – | 55.9% |
| PRBench Finance | 51.1% | – |
| PRBench Legal | 49.9% | – |
| VISTA | 52.4% | – |
| MultiNRC | 65.2% | – |
| Kagi LLM Benchmark | 76.8% | – |
| ARC-AGI-1 | 70.2% | 87.5% |
| ARC-AGI-2 | 18.3% | 61.3% |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
GPT-5 Pro vs Grok 4.6: questions
- Is GPT-5 Pro better than Grok 4.6?
- Grok 4.6 (medium) leads on quality: 63.9 vs 60.8. The BenchLeader Index combines every independent quality benchmark; Grok 4.6 (medium) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Which is cheaper, GPT-5 Pro or Grok 4.6?
- Grok 4.6 is cheaper: $3.00 against $41.25 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Grok 4.6 accepts more context: 500k against 400k tokens.