GPT-5.2 vs Grok 4.5
GPT-5.2 
Grok 4.5 Verdict
- Grok 4.5 leads on quality: 63.5 vs 61.6.
- GPT-5.2 is stronger in agents & tools, composite, human preference, instruction following, long context.
- Grok 4.5 is stronger in coding, knowledge, multimodal, reasoning.
- Grok 4.5 is 1.6× cheaper ($3.00 vs $4.81 per 1M blended).
- GPT-5.2 streams 1.3× faster (68 vs 52 tokens per second).
| Metric | GPT-5.2 | Grok 4.5 |
|---|---|---|
| BenchLeader Index | 61.6 | 63.5 |
| Agents & tools score | 61.2 | 58.6 |
| Coding score | 53.7 | 59.8 |
| Composite score | 67.5 | 66.2 |
| Human preference score | 67.9 | 67.2 |
| Instruction following score | 67.4 | – |
| Knowledge score | 61.1 | 76.2 |
| Long context score | 67.9 | 66.2 |
| Multimodal score | 59.9 | 64.9 |
| Reasoning score | 61.3 | 69.2 |
| Blended price $/M | $4.81 | $3.00 |
| Output speed | 68 tok/s | 52 tok/s |
| Time to first answer | 129.4 s | 13.6 s |
| Context window | 400k | 500k |
| Humanity's Last Exam | 27.8% | – |
| Terminal-Bench | 64.9% | – |
| SimpleBench | 45.8% | 70.0% |
| Remote Labor Index | 2.1% | – |
| WeirdML | – | 46.4% |
| APEX-Agents | 23.0% | 34.2% |
| FrontierCode | – | 42.4% |
| Epoch Capabilities Index | 153.5 | 153.9 |
| LMArena Text | 1476 | 1471 |
| LMArena Hard Prompts | 1497 | 1495 |
| LMArena Coding | 1515 | 1523 |
| LMArena WebDev | 1417 | 1556 |
| LMArena Vision | 1268 | 1291 |
| LMArena Agent | – | 3.9 |
| LiveBench | – | 75.8% |
| LiveBench Reasoning | – | 87.2% |
| LiveBench Coding | – | 68.6% |
| LiveBench Agentic Coding | – | 56.5% |
| LiveBench Mathematics | – | 90.8% |
| LiveBench Data Analysis | – | 73.0% |
| LiveBench Language | – | 82.8% |
| AA Intelligence Index | 30.4 | 39.1 |
| IFBench | 75.4% | – |
| AA-LCR | 82.7% | 79.3% |
| MMMU-Pro | – | 80.4% |
| AA-Omniscience | -0.9 | 25.3 |
| Terminal-Bench Hard | 47.0% | – |
| GPQA Diamond (AA) | 90.3% | 93.1% |
| Humanity's Last Exam (AA) | 37.7% | 42.7% |
| SciCode (AA) | – | 55.0% |
| τ²-Bench Telecom (AA) | 84.8% | – |
| SWE-Bench Pro | 29.9% | – |
| VISTA | 46.6% | – |
| MultiNRC | 42.2% | – |
| TutorBench | 53.5% | – |
| Kagi LLM Benchmark | 73.3% | 83.5% |
| SWE-bench Verified (bash only) | 69.0% | – |
| ARC-AGI-1 | 94.5% | – |
| ARC-AGI-2 | 72.9% | – |
| BFCL Overall | 55.9% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
GPT-5.2 vs Grok 4.5: questions
- Is GPT-5.2 better than Grok 4.5?
- Grok 4.5 leads on quality: 63.5 vs 61.6. The BenchLeader Index combines every independent quality benchmark; Grok 4.5 is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is GPT-5.2 better than Grok 4.5 for coding?
- Grok 4.5 scores higher in coding (60 vs 54 on the category index, where 50 is average).
- Is GPT-5.2 better than Grok 4.5 for agentic tasks?
- GPT-5.2 scores higher in agentic tasks (61 vs 59 on the category index, where 50 is average).
- Which is cheaper, GPT-5.2 or Grok 4.5?
- Grok 4.5 is cheaper: $3.00 against $4.81 per million tokens, blended at three input tokens per output token.
- Which is faster, GPT-5.2 or Grok 4.5?
- GPT-5.2 streams faster: 68 against 52 output tokens per second.
- Which has the larger context window?
- Grok 4.5 accepts more context: 500k against 400k tokens.