# GLM-4.5V vs GPT-6 Astra

> GPT-6 Astra is the stronger model overall, scoring 70.3 to 39.2 on the Noometry Index. GLM-4.5V costs 22× less per token, which makes it the better buy when GPT-6 Astra's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/glm-4-5v-vs-gpt-6-astra
- Last updated: 2026-10-10
- Shared benchmarks: 14

## Summary

- They share 14 benchmarks with published results for both. GLM-4.5V scores higher in 0 categories and GPT-6 Astra in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-6 Astra leads 93.4 to 34.7.
- GLM-4.5V is cheaper at $0.60 / $1.80 per million input/output tokens, against $10 / $50 for GPT-6 Astra.
- GPT-6 Astra accepts more context: 1.05M tokens versus 64K.
- GLM-4.5V has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 39.2 | 70.3 |
| Rank | 158 | 1 |
| Context | 64K | 1.05M |
| Input $/M | $0.60 | $10 |
| Output $/M | $1.80 | $50 |
| Weights | Open | Proprietary |

## Coding

- GLM-4.5V: 38.9 (#152)
- GPT-6 Astra: 70.5 (#3)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Coding | 1347 | 1488 |
| DeepSWE | — | 74.1% |
| FrontierCode | — | 53.3% |
| LMArena WebDev | — | 1792 |
| FrontierSWE | — | 65.5% |
| SciCode | — | 56.5% |
| WeirdML | — | 93.6% |
| MirrorCode | — | 46.7% |
| ALE-Bench | — | 2,951 |

## Agentic & Tool Use

- GLM-4.5V: —
- GPT-6 Astra: 52.3 (#3)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| APEX-Agents | — | 64.7% |
| Remote Labor Index | — | 20.8% |
| BALROG | — | 68.3% |
| Vending-Bench 2 | — | 15,515 |

## Reasoning

- GLM-4.5V: 26.5 (#118)
- GPT-6 Astra: 85.1 (#1)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Hard Prompts | 1335 | 1464 |
| ARC-AGI-2 | — | 95% |
| Kagi LLM Benchmark | 59.8% | — |
| NYT Connections (extended) | — | 98.1% |
| ARC-AGI-1 | — | 98.5% |
| CritPt | — | 31.7% |
| Chess Puzzles | — | 72% |
| EBR-Bench | — | 76.2% |
| Mystery Game Puzzles | — | 84% |
| DTBench | — | 97.3% |
| LMCA | — | 64.4% |
| Bench to the Future 3 | — | 0.14 |
| Epoch Capabilities Index | — | 166.6 |

## Math

- GLM-4.5V: 34.7 (#157)
- GPT-6 Astra: 93.4 (#1)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Math | 1353 | 1463 |
| FrontierMath (Tiers 1-3) | — | 93.7% |
| FrontierMath Tier 4 | — | 97.6% |
| OTIS Mock AIME 2024-2025 | — | 100% |
| ProofBench | — | 99% |
| FrontierMath Erdős | — | 2.9% |

## Knowledge

- GLM-4.5V: 36.8 (#155)
- GPT-6 Astra: 75.3 (#1)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Expert | 1353 | 1486 |
| GPQA Diamond | — | 95.8% |
| Humanity's Last Exam | — | 54.8% |
| SimpleQA Verified | — | 75.6% |
| Vectara Hallucination Rate | — | 8.7% |

## Multimodal

- GLM-4.5V: 33.6 (#86)
- GPT-6 Astra: 55.1 (#3)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Vision | 1154 | 1280 |
| Blueprint-Bench 2 | — | 49.7% |
| Furniture Assembly | — | 80% |
| LMArena Document | — | 1468 |

## Multilingual

- GLM-4.5V: 44.9 (#172)
- GPT-6 Astra: 54.0 (#53)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Non-English | 1304 | 1431 |
| LMArena Chinese | 1338 | 1495 |
| LMArena Russian | 1299 | 1434 |
| LMArena Spanish | 1335 | 1412 |
| LMArena French | — | 1467 |

## Instruction Following

- GLM-4.5V: 69.4 (#170)
- GPT-6 Astra: 76.6 (#37)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Instruction Following | 1311 | 1454 |

## Long Context

- GLM-4.5V: 39.6 (#166)
- GPT-6 Astra: 44.7 (#57)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Longer Query | 1305 | 1460 |

## Writing & Preference

- GLM-4.5V: 52.7 (#162)
- GPT-6 Astra: 75.7 (#7)

| Benchmark | GLM-4.5V | GPT-6 Astra |
|---|---|---|
| LMArena Text | 1333 | 1443 |
| LMArena Creative Writing | 1295 | 1423 |
| LMArena Multi-Turn | 1333 | 1457 |
| EQ-Bench Creative Writing | — | 2173 |

## FAQ

### Is GLM-4.5V better than GPT-6 Astra?

GPT-6 Astra is the stronger model overall, scoring 70.3 to 39.2 on the Noometry Index. GLM-4.5V costs 22× less per token, which makes it the better buy when GPT-6 Astra's lead doesn't matter for your workload.

### Which is cheaper, GLM-4.5V or GPT-6 Astra?

GLM-4.5V is cheaper. It lists at $0.60 per million input tokens and $1.80 per million output tokens; GPT-6 Astra lists at $10 and $50.

### Is GLM-4.5V or GPT-6 Astra better for coding?

GPT-6 Astra scores higher on coding benchmarks: 70.5 versus 38.9 in the Noometry coding category.

### Which has the bigger context window?

GPT-6 Astra does, with 1.05M tokens against 64K.

### How many benchmarks do GLM-4.5V and GPT-6 Astra share?

14 benchmarks have published results for both models. GLM-4.5V has 15 scored results on Noometry and GPT-6 Astra has 51.