Model comparison
GLM-4.5V vs GPT-5 Pro
GPT-5 Pro is the stronger model overall, scoring 46.4 to 39.8 on the Noometry Index. GLM-4.5V costs 46× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. GLM-4.5V scores higher in 0 categories and GPT-5 Pro in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5 Pro leads 56.7 to 37.5.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 59.8% for GLM-4.5V and 76.8% for GPT-5 Pro.
- GLM-4.5V is cheaper at $0.60 / $1.80 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- GPT-5 Pro accepts more context: 400K tokens versus 64K.
- GLM-4.5V has downloadable open weights; the other is API-only.
Side by side
| GLM-4.5V | GPT-5 Pro | |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 39.8 | 46.4 |
| Released | 2025-08-11 | 2025-10-06 |
| Weights | Open | Proprietary |
| Context window | 64K | 400K |
| Max output | 16K | 272K |
| Input $ / M tokens | $0.60 | $15 |
| Output $ / M tokens | $1.80 | $120 |
| Results tracked | 15 | 12 |
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Category by category
Coding GPT-5 Pro leads
GLM-4.5V: 39.5 (#155), GPT-5 Pro: 44.0 (#80)
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| WeirdML | — | 60.4% |
| LMArena Coding | 1347 | — |
| AlgoTune | — | 1.31 |
Reasoning GPT-5 Pro leads
GLM-4.5V: 27.4 (#119), GPT-5 Pro: 38.9 (#62)
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| Kagi LLM Benchmark | 59.8% | 76.8% |
| ARC-AGI-2 | — | 18.3% |
| SimpleBench | — | 61.6% |
| ARC-AGI-1 | — | 70.2% |
| EnigmaEval | — | 18.8% |
| LMArena Hard Prompts | 1334 | — |
| Epoch Capabilities Index | — | 150.28 |
Math GPT-5 Pro leads
GLM-4.5V: 37.4 (#159), GPT-5 Pro: 48.5 (#63)
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 55.8% |
| FrontierMath Tier 4 | — | 19.5% |
| LMArena Math | 1354 | — |
| FrontierMath Tier 4 (v1) | — | 14.6% |
Knowledge GPT-5 Pro leads
GLM-4.5V: 37.5 (#156), GPT-5 Pro: 56.7 (#42)
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| Humanity's Last Exam | — | 31.6% |
| LMArena Expert | 1353 | — |
Multimodal Not comparable
GLM-4.5V: 34.3 (#92), GPT-5 Pro: —
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| LMArena Vision | 1154 | — |
Multilingual Not comparable
GLM-4.5V: 44.6 (#177), GPT-5 Pro: —
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| LMArena Non-English | 1303 | — |
| LMArena Chinese | 1337 | — |
| LMArena Russian | 1298 | — |
| LMArena Spanish | 1336 | — |
Instruction Following Not comparable
GLM-4.5V: 69.2 (#175), GPT-5 Pro: —
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| LMArena Instruction Following | 1311 | — |
Long Context Not comparable
GLM-4.5V: 39.6 (#171), GPT-5 Pro: —
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| LMArena Longer Query | 1304 | — |
Writing & Preference Not comparable
GLM-4.5V: 52.5 (#170), GPT-5 Pro: —
| Benchmark | GLM-4.5V | GPT-5 Pro |
|---|---|---|
| LMArena Text | 1333 | — |
| LMArena Creative Writing | 1295 | — |
| LMArena Multi-Turn | 1332 | — |
Frequently asked questions
Is GLM-4.5V better than GPT-5 Pro?
GPT-5 Pro is the stronger model overall, scoring 46.4 to 39.8 on the Noometry Index. GLM-4.5V costs 46× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.
Which is cheaper, GLM-4.5V or GPT-5 Pro?
GLM-4.5V is cheaper. It lists at $0.60 per million input tokens and $1.80 per million output tokens; GPT-5 Pro lists at $15 and $120.
Is GLM-4.5V or GPT-5 Pro better for coding?
GPT-5 Pro scores higher on coding benchmarks: 44.0 versus 39.5 in the Noometry coding category.
Which has the bigger context window?
GPT-5 Pro does, with 400K tokens against 64K.
How many benchmarks do GLM-4.5V and GPT-5 Pro share?
1 benchmark has published results for both models. GLM-4.5V has 15 scored results on Noometry and GPT-5 Pro has 12.