Model comparison
GLM-5V-Turbo vs GPT-5.5 Pro
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 43.8 on the Noometry Index. GLM-5V-Turbo costs 36× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in math, where GPT-5.5 Pro leads 84.0 to 39.4.
- GLM-5V-Turbo is cheaper at $1.20 / $4 per million input/output tokens, against $30 / $180 for GPT-5.5 Pro.
- GPT-5.5 Pro accepts more context: 1.05M tokens versus 200K.
Side by side
| GLM-5V-Turbo | GPT-5.5 Pro | |
|---|---|---|
| Provider | Z.ai (Zhipu) | OpenAI |
| Noometry Index | 43.8 | 64.3 |
| Released | 2026-04-01 | 2026-04-23 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 1.05M |
| Max output | 131K | 128K |
| Input $ / M tokens | $1.20 | $30 |
| Output $ / M tokens | $4 | $180 |
| Results tracked | 19 | 14 |
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Category by category
Coding Not comparable
GLM-5V-Turbo: 42.1 (#111), GPT-5.5 Pro: —
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| LMArena WebDev | 1401 | — |
| LMArena Coding | 1466 | — |
Reasoning GPT-5.5 Pro leads
GLM-5V-Turbo: 29.7 (#89), GPT-5.5 Pro: 73.3 (#10)
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| ARC-AGI-2 | — | 84.6% |
| SimpleBench | — | 76.9% |
| ARC-AGI-1 | — | 96.5% |
| CritPt | — | 30.6% |
| Chess Puzzles | — | 64% |
| LMArena Hard Prompts | 1443 | — |
| DTBench | — | 96% |
| LMCA | — | 53.9% |
| Epoch Capabilities Index | — | 162.07 |
Math GPT-5.5 Pro leads
GLM-5V-Turbo: 39.4 (#106), GPT-5.5 Pro: 84.0 (#10)
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 87.7% |
| FrontierMath Tier 4 | — | 78% |
| OTIS Mock AIME 2024-2025 | — | 100% |
| LMArena Math | 1441 | — |
| FrontierMath (Feb 2025 set) | — | 52.4% |
| FrontierMath Tier 4 (v1) | — | 39.6% |
Knowledge GPT-5.5 Pro leads
GLM-5V-Turbo: 40.6 (#117), GPT-5.5 Pro: 64.1 (#19)
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| GPQA Diamond | — | 93.9% |
| LMArena Expert | 1452 | — |
Multimodal Not comparable
GLM-5V-Turbo: 40.9 (#42), GPT-5.5 Pro: —
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| LMArena Vision | 1264 | — |
| LMArena Document | 1416 | — |
Multilingual Not comparable
GLM-5V-Turbo: 53.0 (#73), GPT-5.5 Pro: —
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| LMArena Non-English | 1420 | — |
| LMArena Chinese | 1488 | — |
| LMArena French | 1444 | — |
| LMArena German | 1423 | — |
| LMArena Korean | 1396 | — |
| LMArena Russian | 1431 | — |
| LMArena Spanish | 1450 | — |
Instruction Following Not comparable
GLM-5V-Turbo: 75.0 (#80), GPT-5.5 Pro: —
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| LMArena Instruction Following | 1423 | — |
Long Context Not comparable
GLM-5V-Turbo: 44.0 (#80), GPT-5.5 Pro: —
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| LMArena Longer Query | 1438 | — |
Writing & Preference Not comparable
GLM-5V-Turbo: 62.5 (#73), GPT-5.5 Pro: —
| Benchmark | GLM-5V-Turbo | GPT-5.5 Pro |
|---|---|---|
| LMArena Text | 1437 | — |
| LMArena Creative Writing | 1416 | — |
| LMArena Multi-Turn | 1432 | — |
Frequently asked questions
Is GLM-5V-Turbo better than GPT-5.5 Pro?
GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 43.8 on the Noometry Index. GLM-5V-Turbo costs 36× less per token, which makes it the better buy when GPT-5.5 Pro's lead doesn't matter for your workload.
Which is cheaper, GLM-5V-Turbo or GPT-5.5 Pro?
GLM-5V-Turbo is cheaper. It lists at $1.20 per million input tokens and $4 per million output tokens; GPT-5.5 Pro lists at $30 and $180.
Which has the bigger context window?
GPT-5.5 Pro does, with 1.05M tokens against 200K.
How many benchmarks do GLM-5V-Turbo and GPT-5.5 Pro share?
0 benchmarks have published results for both models. GLM-5V-Turbo has 19 scored results on Noometry and GPT-5.5 Pro has 14.