Model comparison
GLM-5.1 vs Grok-3 mini
GLM-5.1 is the stronger model overall, scoring 47.8 to 41.2 on the Noometry Index.
Last verified . 22 shared benchmarks.
Summary
- They share 22 benchmarks with published results for both. GLM-5.1 scores higher in 7 categories and Grok-3 mini in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GLM-5.1 leads 39.1 to 13.6.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 93.3% for GLM-5.1 and 77.8% for Grok-3 mini.
- GLM-5.1 has downloadable open weights; the other is API-only.
Side by side
| GLM-5.1 | Grok-3 mini | |
|---|---|---|
| Provider | Z.ai (Zhipu) | xAI |
| Noometry Index | 47.8 | 41.2 |
| Released | 2026-04-07 | 2025-04-09 |
| Weights | Open | Proprietary |
| Context window | 200K | — |
| Max output | 131K | — |
| Input $ / M tokens | $1.40 | — |
| Output $ / M tokens | $4.40 | — |
| Results tracked | 41 | 35 |
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Category by category
Coding GLM-5.1 leads
GLM-5.1: 48.7 (#55), Grok-3 mini: 40.8 (#131)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| WeirdML | 57.1% | 42.6% |
| LMArena Coding | 1485 | 1379 |
| SWE-bench Verified | 74.2% | — |
| Aider Polyglot | — | 49.3% |
| LMArena WebDev | 1508 | — |
| SciCode | 43.8% | — |
| ALE-Bench | 887.1 | — |
Agentic & Tool Use Not comparable
GLM-5.1: 24.9 (#113), Grok-3 mini: —
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| 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), Grok-3 mini: 13.6 (#334)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| LMArena Hard Prompts | 1472 | 1375 |
| Epoch Capabilities Index | 149.84 | 140.35 |
| ARC-AGI-2 | — | 0.4% |
| SimpleBench | 55.1% | — |
| Kagi LLM Benchmark | — | 61.3% |
| NYT Connections (extended) | 77.7% | — |
| ARC-AGI-1 | — | 16.5% |
| CritPt | 4.6% | — |
| Chess Puzzles | 19% | — |
| Thematic Generalization | 69.8% | — |
Math GLM-5.1 leads
GLM-5.1: 49.7 (#60), Grok-3 mini: 42.1 (#85)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 93.3% | 77.8% |
| LMArena Math | 1473 | 1386 |
| FrontierMath (Feb 2025 set) | 33.4% | 5.9% |
| FrontierMath (Tiers 1-3) | 36.8% | — |
| MathArena Final-Answer Competitions | 67.1% | — |
| ProofBench | 22.2% | — |
| Omni-MATH | — | 31.8% |
| MATH Level 5 | — | 90.9% |
| FrontierMath Tier 4 (v1) | 12.5% | — |
Knowledge GLM-5.1 leads
GLM-5.1: 54.9 (#50), Grok-3 mini: 46.4 (#81)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| GPQA Diamond | 89.9% | 76.3% |
| LMArena Expert | 1476 | 1395 |
| SimpleQA Verified | 34% | — |
| MMLU-Pro | — | 79.9% |
| Confabulations | — | 10.8% |
| GPQA (HELM) | — | 67.5% |
Multilingual GLM-5.1 leads
GLM-5.1: 55.0 (#36), Grok-3 mini: 48.1 (#145)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| LMArena Non-English | 1447 | 1352 |
| LMArena Chinese | 1515 | 1387 |
| LMArena French | 1474 | 1357 |
| LMArena German | 1465 | 1349 |
| LMArena Japanese | 1434 | 1342 |
| LMArena Korean | 1418 | 1335 |
| LMArena Russian | 1454 | 1353 |
| LMArena Spanish | 1469 | 1381 |
Instruction Following Grok-3 mini leads
GLM-5.1: 76.3 (#42), Grok-3 mini: 78.5 (#9)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| LMArena Instruction Following | 1451 | 1357 |
| IFEval | — | 95.1% |
Long Context GLM-5.1 leads
GLM-5.1: 44.9 (#53), Grok-3 mini: 41.0 (#147)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| LMArena Longer Query | 1466 | 1372 |
| Fiction.LiveBench | — | 66.7% |
Writing & Preference GLM-5.1 leads
GLM-5.1: 66.9 (#31), Grok-3 mini: 52.5 (#169)
| Benchmark | GLM-5.1 | Grok-3 mini |
|---|---|---|
| LMArena Text | 1461 | 1370 |
| LMArena Creative Writing | 1453 | 1342 |
| LMArena Multi-Turn | 1472 | 1355 |
| Short-Story Creative Writing | — | 73.5% |
| EQ-Bench Creative Writing | 1592 | — |
| WildBench | — | 65.1% |
Frequently asked questions
Is GLM-5.1 better than Grok-3 mini?
GLM-5.1 is the stronger model overall, scoring 47.8 to 41.2 on the Noometry Index.
Is GLM-5.1 or Grok-3 mini better for coding?
GLM-5.1 scores higher on coding benchmarks: 48.7 versus 40.8 in the Noometry coding category.
How many benchmarks do GLM-5.1 and Grok-3 mini share?
22 benchmarks have published results for both models. GLM-5.1 has 41 scored results on Noometry and Grok-3 mini has 35.