Compare / GPT-5 vs Grok 4.3
GPT-5 vs Grok 4.3
22 results from 4 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | GPT-5 | Grok 4.3 |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,183 | 1,193 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,421 | 1,428 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,413 | 1,440 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,373 | 1,423 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,460 | 1,452 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,410 | 1,415 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,435 | 1,442 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,397 | 1,424 |
| Artificial Analysisreported | Artificial Analysis Coding Indexindex score | 37.8 | 42.2 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 23.0 | 24.9 |
| Artificial Analysisreported | GPQA Diamond% of questions | 85.4% | 90.1% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 28.5% | 37.2% |
| Artificial Analysisreported | IFBench% of instructions | 73.1% | 83.3% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 78.2% | 75.0% |
| Artificial Analysisreported | Terminal-Bench 2.1% of tasks | 35.2% | 39.7% |
| Artificial Analysisreported | Terminal-Bench Hard% of tasks | 37.9% | 37.9% |
| Artificial Analysisreported | Τ-bench banking% of tasks | 22.1% | 12.4% |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 86.5% | 97.7% |
| SimpleQA Verified (Epoch AI)reported | Correct answers% of questions | 50.1% | 33.2% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 58.0% | 21.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.39 | 0.34 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 53.5 | 57.7 |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.