GPT-6 Sol vs Grok 4.3
GPT-6 Sol 
Grok 4.3 Verdict
- GPT-6 Sol (max) leads on quality: 67.7 vs 59.3.
- GPT-6 Sol (max) is stronger in composite, knowledge, long context, multimodal, reasoning.
- Grok 4.3 (medium) is stronger in agents & tools, instruction following.
- Grok 4.3 (medium) is 2.6× cheaper ($1.56 vs $4.00 per 1M blended).
| Metric | GPT-6 Sol (max) | Grok 4.3 (medium) |
|---|---|---|
| BenchLeader Index | 67.7 | 59.3 |
| Composite score | 86.2 | 58.9 |
| Knowledge score | 75.4 | 70.6 |
| Long context score | 67.7 | 63.2 |
| Multimodal score | 67.1 | 59.5 |
| Reasoning score | 95.0 | 50.2 |
| Agents & tools score | – | 60.0 |
| Instruction following score | – | 80.3 |
| Blended price $/M | $4.00 | $1.56 |
| Output speed | 126 tok/s | 104 tok/s |
| Time to first answer | 107.2 s | 13.2 s |
| Context window | 1.1M | 1M |
| AA Intelligence Index | 47.5 | 24.8 |
| IFBench | – | 83.3% |
| AA-LCR | 83.7% | 75.0% |
| MMMU-Pro | 83.3% | 75.8% |
| AA-Omniscience | 27.1 | 16.7 |
| Terminal-Bench Hard | – | 30.3% |
| GPQA Diamond (AA) | – | 89.0% |
| Humanity's Last Exam (AA) | 47.9% | 30.0% |
| SciCode (AA) | 57.6% | – |
| τ²-Bench Telecom (AA) | – | 91.2% |
| CritPt | 30.9% | 4.9% |
| GDPval (AA) | 49.4% | – |
| Terminal-Bench 4.0 (AA) | 43.9% | – |
| AutomationBench | 61.6% | – |
| GDP.pdf | 24.8% | – |
| MLCR | 16.1% | – |
| AA-Omniscience: accuracy | 54.5% | 28.8% |
| AA-Omniscience: non-hallucination | 39.9% | 83.1% |
| AA-Briefcase | 1483 | – |
Data as of 2026-09-23. Best configuration of each model; every score links to its source on the model pages.
GPT-6 Sol vs Grok 4.3: questions
- Is GPT-6 Sol better than Grok 4.3?
- GPT-6 Sol (max) leads on quality: 67.7 vs 59.3. The BenchLeader Index combines every independent quality benchmark; GPT-6 Sol (max) is ahead overall as of 2026-09-23, but check the category scores for your use.
- Which is cheaper, GPT-6 Sol or Grok 4.3?
- Grok 4.3 is cheaper: $1.56 against $4.00 per million tokens, blended at three input tokens per output token.
- Which is faster, GPT-6 Sol or Grok 4.3?
- GPT-6 Sol streams faster: 126 against 104 output tokens per second.
- Which has the larger context window?
- GPT-6 Sol accepts more context: 1.1M against 1M tokens.