Model comparison
GLM-5.1 vs GLM-5V-Turbo
GLM-5.1 is the stronger model overall, scoring 47.8 to 43.8 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. GLM-5.1 scores higher in 8 categories and GLM-5V-Turbo in 0 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GLM-5.1 leads 54.9 to 40.6.
- GLM-5V-Turbo is cheaper at $1.20 / $4 per million input/output tokens, against $1.40 / $4.40 for GLM-5.1.
- GLM-5.1 has downloadable open weights; the other is API-only.
Side by side
| GLM-5.1 | GLM-5V-Turbo | |
|---|---|---|
| Provider | Z.ai (Zhipu) | Z.ai (Zhipu) |
| Noometry Index | 47.8 | 43.8 |
| Released | 2026-04-07 | 2026-04-01 |
| Weights | Open | Proprietary |
| Context window | 200K | 200K |
| Max output | 131K | 131K |
| Input $ / M tokens | $1.40 | $1.20 |
| Output $ / M tokens | $4.40 | $4 |
| Results tracked | 41 | 19 |
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Category by category
Coding GLM-5.1 leads
GLM-5.1: 48.7 (#55), GLM-5V-Turbo: 42.1 (#111)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena WebDev | 1508 | 1401 |
| LMArena Coding | 1485 | 1466 |
| SWE-bench Verified | 74.2% | — |
| SciCode | 43.8% | — |
| WeirdML | 57.1% | — |
| ALE-Bench | 887.1 | — |
Agentic & Tool Use Not comparable
GLM-5.1: 24.9 (#113), GLM-5V-Turbo: —
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| APEX-Agents | 40.9% | — |
| ExploitBench | 18.1% | — |
| GBAEval | 0% | — |
| Vending-Bench 2 | 5,634 | — |
Reasoning GLM-5.1 leads
GLM-5.1: 39.1 (#60), GLM-5V-Turbo: 29.7 (#89)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Hard Prompts | 1472 | 1443 |
| SimpleBench | 55.1% | — |
| NYT Connections (extended) | 77.7% | — |
| CritPt | 4.6% | — |
| Chess Puzzles | 19% | — |
| Thematic Generalization | 69.8% | — |
| Epoch Capabilities Index | 149.84 | — |
Math GLM-5.1 leads
GLM-5.1: 49.7 (#60), GLM-5V-Turbo: 39.4 (#106)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Math | 1473 | 1441 |
| FrontierMath (Tiers 1-3) | 36.8% | — |
| MathArena Final-Answer Competitions | 67.1% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 22.2% | — |
| FrontierMath (Feb 2025 set) | 33.4% | — |
| FrontierMath Tier 4 (v1) | 12.5% | — |
Knowledge GLM-5.1 leads
GLM-5.1: 54.9 (#50), GLM-5V-Turbo: 40.6 (#117)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Expert | 1476 | 1452 |
| GPQA Diamond | 89.9% | — |
| SimpleQA Verified | 34% | — |
Multimodal Not comparable
GLM-5.1: —, GLM-5V-Turbo: 40.9 (#42)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Vision | — | 1264 |
| LMArena Document | — | 1416 |
Multilingual GLM-5.1 leads
GLM-5.1: 55.0 (#36), GLM-5V-Turbo: 53.0 (#73)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Non-English | 1447 | 1420 |
| LMArena Chinese | 1515 | 1488 |
| LMArena French | 1474 | 1444 |
| LMArena German | 1465 | 1423 |
| LMArena Korean | 1418 | 1396 |
| LMArena Russian | 1454 | 1431 |
| LMArena Spanish | 1469 | 1450 |
| LMArena Japanese | 1434 | — |
Instruction Following GLM-5.1 leads
GLM-5.1: 76.3 (#42), GLM-5V-Turbo: 75.0 (#80)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Instruction Following | 1451 | 1423 |
Long Context Too close to call
GLM-5.1: 44.9 (#53), GLM-5V-Turbo: 44.0 (#80)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Longer Query | 1466 | 1438 |
Writing & Preference GLM-5.1 leads
GLM-5.1: 66.9 (#31), GLM-5V-Turbo: 62.5 (#73)
| Benchmark | GLM-5.1 | GLM-5V-Turbo |
|---|---|---|
| LMArena Text | 1461 | 1437 |
| LMArena Creative Writing | 1453 | 1416 |
| LMArena Multi-Turn | 1472 | 1432 |
| EQ-Bench Creative Writing | 1592 | — |
Frequently asked questions
Is GLM-5.1 better than GLM-5V-Turbo?
GLM-5.1 is the stronger model overall, scoring 47.8 to 43.8 on the Noometry Index.
Which is cheaper, GLM-5.1 or GLM-5V-Turbo?
GLM-5V-Turbo is cheaper. It lists at $1.20 per million input tokens and $4 per million output tokens; GLM-5.1 lists at $1.40 and $4.40.
Is GLM-5.1 or GLM-5V-Turbo better for coding?
GLM-5.1 scores higher on coding benchmarks: 48.7 versus 42.1 in the Noometry coding category.
Which has the bigger context window?
Both accept 200K tokens.
How many benchmarks do GLM-5.1 and GLM-5V-Turbo share?
17 benchmarks have published results for both models. GLM-5.1 has 41 scored results on Noometry and GLM-5V-Turbo has 19.