Model comparison
GLM-4.7-Flash vs Step 3.5 Flash
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 38.8 on the Noometry Index.
Last verified . 16 shared benchmarks.
StepFunSummary
- They share 16 benchmarks with published results for both. GLM-4.7-Flash scores higher in 0 categories and Step 3.5 Flash in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Step 3.5 Flash leads 58.8 to 47.4.
- Both cost about the same: $0.06 input and $0.40 output per million tokens.
- Step 3.5 Flash accepts more context: 256K tokens versus 200K.
Side by side
| GLM-4.7-Flash | Step 3.5 Flash | |
|---|---|---|
| Provider | Z.ai (Zhipu) | StepFun |
| Noometry Index | 38.8 | 42.3 |
| Released | 2026-01-19 | 2026-01-29 |
| Weights | Open | Open |
| Context window | 200K | 256K |
| Max output | 131K | 256K |
| Input $ / M tokens | $0.06 | $0.10 |
| Output $ / M tokens | $0.40 | $0.30 |
| Results tracked | 21 | 19 |
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Category by category
Coding Step 3.5 Flash leads
GLM-4.7-Flash: 40.6 (#135), Step 3.5 Flash: 42.4 (#105)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1383 | 1436 |
Reasoning Step 3.5 Flash leads
GLM-4.7-Flash: 20.9 (#229), Step 3.5 Flash: 22.2 (#202)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1356 | 1411 |
| NYT Connections (extended) | — | 28.4% |
| Chess Puzzles | 0% | — |
Math Step 3.5 Flash leads
GLM-4.7-Flash: 36.1 (#173), Step 3.5 Flash: 42.6 (#84)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1355 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
| OTIS Mock AIME 2024-2025 | 58.3% | — |
Knowledge Step 3.5 Flash leads
GLM-4.7-Flash: 35.5 (#184), Step 3.5 Flash: 39.6 (#132)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1357 | 1421 |
| GPQA Diamond | 60.5% | — |
| Vectara Hallucination Rate | 9.3% | — |
Multilingual Step 3.5 Flash leads
GLM-4.7-Flash: 46.5 (#158), Step 3.5 Flash: 50.5 (#119)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1330 | 1385 |
| LMArena Chinese | 1403 | 1447 |
| LMArena French | 1332 | 1421 |
| LMArena German | 1337 | 1405 |
| LMArena Korean | 1283 | 1352 |
| LMArena Russian | 1332 | 1385 |
| LMArena Spanish | 1350 | 1419 |
| LMArena Japanese | — | 1354 |
Instruction Following Step 3.5 Flash leads
GLM-4.7-Flash: 70.1 (#167), Step 3.5 Flash: 73.1 (#124)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1327 | 1385 |
Long Context Step 3.5 Flash leads
GLM-4.7-Flash: 40.9 (#148), Step 3.5 Flash: 42.8 (#117)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1345 | 1402 |
Writing & Preference Step 3.5 Flash leads
GLM-4.7-Flash: 47.4 (#210), Step 3.5 Flash: 58.8 (#113)
| Benchmark | GLM-4.7-Flash | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1351 | 1403 |
| LMArena Creative Writing | 1297 | 1357 |
| LMArena Multi-Turn | 1342 | 1405 |
| EQ-Bench Creative Writing | 1125 | — |
Frequently asked questions
Is GLM-4.7-Flash better than Step 3.5 Flash?
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 38.8 on the Noometry Index.
Which is cheaper, GLM-4.7-Flash or Step 3.5 Flash?
GLM-4.7-Flash is cheaper. It lists at $0.06 per million input tokens and $0.40 per million output tokens; Step 3.5 Flash lists at $0.10 and $0.30.
Is GLM-4.7-Flash or Step 3.5 Flash better for coding?
Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 40.6 in the Noometry coding category.
Which has the bigger context window?
Step 3.5 Flash does, with 256K tokens against 200K.
How many benchmarks do GLM-4.7-Flash and Step 3.5 Flash share?
16 benchmarks have published results for both models. GLM-4.7-Flash has 21 scored results on Noometry and Step 3.5 Flash has 19.