GLM-5.3 vs Grok 4.3
GLM-5.3 
Grok 4.3 Verdict
- GLM-5.3 and Grok 4.3 (medium) are level on quality (61.4 vs 60.7).
- GLM-5.3 is stronger in agents & tools, composite, long context.
- Grok 4.3 (medium) is stronger in knowledge, instruction following, multimodal.
- Grok 4.3 (medium) is 1.4× cheaper ($1.56 vs $2.15 per 1M blended).
- Grok 4.3 (medium) streams 1.6× faster (108 vs 67 tokens per second).
| Metric | GLM-5.3 | Grok 4.3 (medium) |
|---|---|---|
| BenchLeader Index | 61.4 | 60.7 |
| Agents & tools score | 65.2 | 60.1 |
| Composite score | 70.4 | 60.3 |
| Knowledge score | 71.0 | 72.2 |
| Long context score | 66.3 | 63.9 |
| Instruction following score | – | 80.0 |
| Multimodal score | – | 60.2 |
| Blended price $/M | $2.15 | $1.56 |
| Output speed | 67 tok/s | 108 tok/s |
| Time to first answer | 33.0 s | 14.1 s |
| Context window | 1M | 1M |
| Epoch Capabilities Index | 155.3 | – |
| LiveBench | 76.1% | – |
| LiveBench Reasoning | 85.8% | – |
| LiveBench Coding | 79.0% | – |
| LiveBench Agentic Coding | 60.9% | – |
| LiveBench Mathematics | 87.9% | – |
| LiveBench Data Analysis | 70.2% | – |
| LiveBench Language | 79.9% | – |
| AA Intelligence Index | 44.9 | 24.8 |
| IFBench | – | 83.3% |
| AA-LCR | 79.7% | 75.0% |
| MMMU-Pro | – | 75.8% |
| AA-Omniscience | 14.3 | 16.7 |
| Terminal-Bench Hard | – | 30.3% |
| GPQA Diamond (AA) | 91.7% | 89.0% |
| Humanity's Last Exam (AA) | 42.3% | 30.0% |
| SciCode (AA) | 59.0% | – |
| τ²-Bench Telecom (AA) | – | 91.2% |
| MCP Atlas | 84.2% | – |
Data as of 2026-09-17. Best configuration of each model; every score links to its source on the model pages.
GLM-5.3 vs Grok 4.3: questions
- Is GLM-5.3 better than Grok 4.3?
- GLM-5.3 and Grok 4.3 (medium) are level on quality (61.4 vs 60.7). The BenchLeader Index combines every independent quality benchmark; GLM-5.3 is ahead overall as of 2026-09-17, but check the category scores for your use.
- Is GLM-5.3 better than Grok 4.3 for agentic tasks?
- GLM-5.3 scores higher in agentic tasks (65 vs 60 on the category index, where 50 is average).
- Which is cheaper, GLM-5.3 or Grok 4.3?
- Grok 4.3 is cheaper: $1.56 against $2.15 per million tokens, blended at three input tokens per output token.
- Which is faster, GLM-5.3 or Grok 4.3?
- Grok 4.3 streams faster: 108 against 67 output tokens per second.
- Which has the larger context window?
- Both accept 1M tokens of context.