Model comparison
GLM-5V-Turbo vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 43.8 on the Noometry Index.
Last verified . 15 shared benchmarks.
StepFunSummary
- They share 15 benchmarks with published results for both. GLM-5V-Turbo scores higher in 0 categories and Step 5 Preview in 9 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 29.7.
- Step 5 Preview is cheaper at $1 / $2.70 per million input/output tokens, against $1.20 / $4 for GLM-5V-Turbo.
- Step 5 Preview accepts more context: 1.02M tokens versus 200K.
Side by side
| GLM-5V-Turbo | Step 5 Preview | |
|---|---|---|
| Provider | Z.ai (Zhipu) | StepFun |
| Noometry Index | 43.8 | 47.9 |
| Released | 2026-04-01 | 2026-09-16 |
| Weights | Proprietary | Proprietary |
| Context window | 200K | 1.02M |
| Max output | 131K | 66K |
| Input $ / M tokens | $1.20 | $1 |
| Output $ / M tokens | $4 | $2.70 |
| Results tracked | 19 | 18 |
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Category by category
Coding Step 5 Preview leads
GLM-5V-Turbo: 42.1 (#111), Step 5 Preview: 51.8 (#36)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena WebDev | 1401 | 1564 |
| LMArena Coding | 1466 | 1480 |
| SciCode | — | 58.9% |
Reasoning Step 5 Preview leads
GLM-5V-Turbo: 29.7 (#89), Step 5 Preview: 40.0 (#57)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1443 | 1465 |
| CritPt | — | 20.9% |
Math Step 5 Preview leads
GLM-5V-Turbo: 39.4 (#106), Step 5 Preview: 46.1 (#72)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Math | 1441 | 1470 |
| ProofBench | — | 42% |
Knowledge Too close to call
GLM-5V-Turbo: 40.6 (#117), Step 5 Preview: 41.2 (#112)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1452 | 1470 |
Multimodal Too close to call
GLM-5V-Turbo: 40.9 (#42), Step 5 Preview: 41.0 (#41)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Vision | 1264 | 1267 |
| LMArena Document | 1416 | — |
Multilingual Too close to call
GLM-5V-Turbo: 53.0 (#73), Step 5 Preview: 53.8 (#54)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1420 | 1432 |
| LMArena Chinese | 1488 | 1519 |
| LMArena Russian | 1431 | 1436 |
| LMArena Spanish | 1450 | 1439 |
| LMArena French | 1444 | — |
| LMArena German | 1423 | — |
| LMArena Korean | 1396 | — |
Instruction Following Step 5 Preview leads
GLM-5V-Turbo: 75.0 (#80), Step 5 Preview: 76.0 (#50)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1423 | 1444 |
Long Context Too close to call
GLM-5V-Turbo: 44.0 (#80), Step 5 Preview: 44.5 (#64)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1438 | 1455 |
Writing & Preference Too close to call
GLM-5V-Turbo: 62.5 (#73), Step 5 Preview: 62.8 (#71)
| Benchmark | GLM-5V-Turbo | Step 5 Preview |
|---|---|---|
| LMArena Text | 1437 | 1442 |
| LMArena Creative Writing | 1416 | 1410 |
| LMArena Multi-Turn | 1432 | 1447 |
Frequently asked questions
Is GLM-5V-Turbo better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 43.8 on the Noometry Index.
Which is cheaper, GLM-5V-Turbo or Step 5 Preview?
Step 5 Preview is cheaper. It lists at $1 per million input tokens and $2.70 per million output tokens; GLM-5V-Turbo lists at $1.20 and $4.
Is GLM-5V-Turbo or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 42.1 in the Noometry coding category.
Which has the bigger context window?
Step 5 Preview does, with 1.02M tokens against 200K.
How many benchmarks do GLM-5V-Turbo and Step 5 Preview share?
15 benchmarks have published results for both models. GLM-5V-Turbo has 19 scored results on Noometry and Step 5 Preview has 18.