Model comparison
GLM-4.5 vs GLM-5
GLM-5 is the stronger model overall, scoring 46.1 to 42.0 on the Noometry Index. GLM-4.5 costs 1.6× less per token, which makes it the better buy when GLM-5's lead doesn't matter for your workload.
Last verified . 22 shared benchmarks.
Summary
- They share 22 benchmarks with published results for both. GLM-4.5 scores higher in 1 category and GLM-5 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GLM-5 leads 52.3 to 35.9.
- The biggest single-benchmark swing is SWE-bench Verified (bash only): 54.2% for GLM-4.5 and 72.8% for GLM-5.
- GLM-4.5 is cheaper at $0.60 / $2.20 per million input/output tokens, against $1 / $3.20 for GLM-5.
- GLM-5 accepts more context: 205K tokens versus 131K.
Side by side
| GLM-4.5 | GLM-5 | |
|---|---|---|
| Provider | Z.ai (Zhipu) | Z.ai (Zhipu) |
| Noometry Index | 42.0 | 46.1 |
| Released | 2025-07-27 | 2026-02-11 |
| Weights | Open | Open |
| Context window | 131K | 205K |
| Max output | 98K | 131K |
| Input $ / M tokens | $0.60 | $1 |
| Output $ / M tokens | $2.20 | $3.20 |
| Results tracked | 27 | 45 |
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Category by category
Coding GLM-5 leads
GLM-4.5: 41.4 (#125), GLM-5: 49.0 (#52)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| SWE-bench Verified (bash only) | 54.2% | 72.8% |
| WeirdML | 40.6% | 48.2% |
| LMArena Coding | 1434 | 1461 |
| ALE-Bench | 344.82 | 765.62 |
| SWE-bench Verified | — | 72.1% |
| LMArena WebDev | — | 1434 |
| SWE-bench Multilingual | — | 69.7% |
| AlgoTune | 1.52 | — |
Agentic & Tool Use Not comparable
GLM-4.5: —, GLM-5: 31.1 (#71)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| Terminal-Bench | — | 52.4% |
| τ²-bench Airline | — | 82.5% |
| τ²-bench Banking | — | 9.8% |
| τ²-bench Retail | — | 73.7% |
| τ²-bench Telecom | — | 86.8% |
| Vending-Bench 2 | — | 4,432 |
Reasoning GLM-4.5 leads
GLM-4.5: 28.6 (#100), GLM-5: 27.6 (#116)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| Kagi LLM Benchmark | 57.9% | 75% |
| LMArena Hard Prompts | 1429 | 1452 |
| ARC-AGI-2 | — | 4.9% |
| SimpleBench | — | 53.2% |
| NYT Connections (extended) | — | 74.8% |
| ARC-AGI-1 | — | 44.7% |
| Chess Puzzles | — | 10% |
| Epoch Capabilities Index | — | 145.83 |
| ForecastBench | — | 61 |
Math GLM-5 leads
GLM-4.5: 39.0 (#116), GLM-5: 46.4 (#71)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| LMArena Math | 1427 | 1440 |
| MathArena Final-Answer Competitions | — | 65.7% |
| OTIS Mock AIME 2024-2025 | — | 80% |
| FrontierMath (Feb 2025 set) | — | 16.4% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge GLM-5 leads
GLM-4.5: 35.9 (#179), GLM-5: 52.3 (#64)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| LMArena Expert | 1433 | 1454 |
| GPQA Diamond | — | 87.8% |
| Humanity's Last Exam | 8.3% | — |
| Confabulations | 11.3% | — |
| Vectara Hallucination Rate | — | 10.1% |
Multilingual Too close to call
GLM-4.5: 52.8 (#77), GLM-5: 53.7 (#58)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| LMArena Non-English | 1417 | 1430 |
| LMArena Chinese | 1465 | 1511 |
| LMArena French | 1418 | 1455 |
| LMArena German | 1407 | 1445 |
| LMArena Japanese | 1415 | 1416 |
| LMArena Korean | 1380 | 1423 |
| LMArena Russian | 1414 | 1436 |
| LMArena Spanish | 1454 | 1454 |
Instruction Following GLM-5 leads
GLM-4.5: 74.1 (#104), GLM-5: 75.2 (#67)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| LMArena Instruction Following | 1404 | 1428 |
Long Context GLM-5 leads
GLM-4.5: 38.2 (#201), GLM-5: 44.7 (#60)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| LMArena Longer Query | 1412 | 1446 |
| Fiction.LiveBench | 58.3% | — |
| CL-bench | — | 18.7% |
Writing & Preference GLM-5 leads
GLM-4.5: 57.5 (#127), GLM-5: 66.0 (#38)
| Benchmark | GLM-4.5 | GLM-5 |
|---|---|---|
| LMArena Text | 1430 | 1446 |
| LMArena Creative Writing | 1395 | 1439 |
| EQ-Bench Creative Writing | 1343 | 1601 |
| LMArena Multi-Turn | 1415 | 1456 |
| Short-Story Creative Writing | 73.4% | — |
Frequently asked questions
Is GLM-4.5 better than GLM-5?
GLM-5 is the stronger model overall, scoring 46.1 to 42.0 on the Noometry Index. GLM-4.5 costs 1.6× less per token, which makes it the better buy when GLM-5's lead doesn't matter for your workload.
Which is cheaper, GLM-4.5 or GLM-5?
GLM-4.5 is cheaper. It lists at $0.60 per million input tokens and $2.20 per million output tokens; GLM-5 lists at $1 and $3.20.
Is GLM-4.5 or GLM-5 better for coding?
GLM-5 scores higher on coding benchmarks: 49.0 versus 41.4 in the Noometry coding category.
Which has the bigger context window?
GLM-5 does, with 205K tokens against 131K.
How many benchmarks do GLM-4.5 and GLM-5 share?
22 benchmarks have published results for both models. GLM-4.5 has 27 scored results on Noometry and GLM-5 has 45.