GLM 5.3 vs GPT-6 Astra
GLM 5.3 
GPT-6 Astra Verdict
- GPT-6 Astra (max) leads on quality: 70.9 vs 60.0.
- GLM 5.3 (max) is stronger in human preference.
- GPT-6 Astra (max) is stronger in agents & tools, coding, knowledge, maths, reasoning, composite.
- GLM 5.3 (max) is 9.3× cheaper ($2.15 vs $20.00 per 1M blended).
- GLM 5.3 (max) streams 2.1× faster (56 vs 27 tokens per second).
| Metric | GLM 5.3 (max) | GPT-6 Astra (max) |
|---|---|---|
| BenchLeader Index | 60.0 | 70.9 |
| Agents & tools score | 52.9 | 68.2 |
| Coding score | 65.2 | 78.6 |
| Human preference score | 68.6 | – |
| Knowledge score | 55.8 | 80.0 |
| Maths score | 60.0 | 77.2 |
| Reasoning score | 66.9 | 73.6 |
| Composite score | – | 72.9 |
| Blended price $/M | $2.15 | $20.00 |
| Output speed | 56 tok/s | 27 tok/s |
| Time to first answer | 37.4 s | 337.3 s |
| Context window | 1.3M | 1.1M |
| GPQA Diamond | 90.9% | 95.8% |
| FrontierMath Tiers 1–3 | 68.8% | 93.7% |
| FrontierMath Tier 4 | 29.3% | 97.6% |
| OTIS Mock AIME | 91.1% | 100.0% |
| SimpleQA Verified | 41.0% | 75.6% |
| Terminal-Bench | 41.8% | 58.2% |
| SciCode | 56.5% | 56.5% |
| WeirdML | 75.4% | – |
| FrontierCode | – | 53.3% |
| ProofBench | 49.0% | – |
| LMArena Text | 1482 | – |
| LMArena Hard Prompts | 1507 | – |
| LMArena Coding | 1528 | – |
| LMArena WebDev | 1613 | 1796 |
| LMArena Agent | 2.6 | 12.5 |
| LiveBench | – | 82.2% |
| LiveBench Reasoning | – | 92.7% |
| LiveBench Coding | – | 80.4% |
| LiveBench Agentic Coding | – | 57.3% |
| LiveBench Mathematics | – | 96.8% |
| LiveBench Data Analysis | – | 83.0% |
| LiveBench Language | – | 89.4% |
| LiveCodeBench | 80.5% | – |
| MMLU-Pro | 86.8% | – |
| LegalBench | 84.8% | – |
| TaxEval | 72.4% | – |
| Terminal-Bench 2.1 (Vals) | 71.5% | 87.3% |
| SWE-bench (Vals) | 95.4% | – |
| GPQA Diamond (Vals) | 88.1% | – |
| Vals Index | 57.0 | 66.6 |
| ARC-AGI-1 | – | 97.5% |
| ARC-AGI-2 | – | 95.0% |
| ARC-AGI-3 | – | 98.6% |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
GLM 5.3 vs GPT-6 Astra: questions
- Is GLM 5.3 better than GPT-6 Astra?
- GPT-6 Astra (max) leads on quality: 70.9 vs 60.0. The BenchLeader Index combines every independent quality benchmark; GPT-6 Astra (max) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is GLM 5.3 better than GPT-6 Astra for coding?
- GPT-6 Astra scores higher in coding (79 vs 65 on the category index, where 50 is average).
- Is GLM 5.3 better than GPT-6 Astra for agentic tasks?
- GPT-6 Astra scores higher in agentic tasks (68 vs 53 on the category index, where 50 is average).
- Which is cheaper, GLM 5.3 or GPT-6 Astra?
- GLM 5.3 is cheaper: $2.15 against $20.00 per million tokens, blended at three input tokens per output token.
- Which is faster, GLM 5.3 or GPT-6 Astra?
- GLM 5.3 streams faster: 56 against 27 output tokens per second.
- Which has the larger context window?
- GLM 5.3 accepts more context: 1.3M against 1.1M tokens.