Model comparison
Grok 4.6 vs Yi-Lightning
Grok 4.6 is the stronger model overall, scoring 56.9 to 37.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Grok 4.6 scores higher in 8 categories and Yi-Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.6 leads 61.4 to 25.9.
Side by side
| Grok 4.6 | Yi-Lightning | |
|---|---|---|
| Provider | xAI | 01.AI |
| Noometry Index | 56.9 | 37.1 |
| Released | 2026-08-12 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 500K | — |
| Max output | 500K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $6 | — |
| Results tracked | 49 | 18 |
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Category by category
Coding Grok 4.6 leads
Grok 4.6: 58.5 (#16), Yi-Lightning: 27.4 (#320)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1465 | 1312 |
| DeepSWE | 67.5% | — |
| FrontierCode | 48% | — |
| Aider Polyglot | — | 12.9% |
| CursorBench | 41.4% | — |
| LMArena WebDev | 1617 | — |
| FrontierSWE | 25.3% | — |
| SciCode | 56.5% | — |
| WeirdML | 67.3% | — |
| ALE-Bench | 1,508 | — |
Agentic & Tool Use Not comparable
Grok 4.6: 39.4 (#27), Yi-Lightning: —
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| APEX-Agents | 65.3% | — |
| GDP.pdf | 17.2% | — |
| Vending-Bench 2 | 9,047 | — |
Reasoning Grok 4.6 leads
Grok 4.6: 61.4 (#20), Yi-Lightning: 25.9 (#139)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1447 | 1302 |
| ARC-AGI-2 | 67.1% | — |
| SimpleBench | 75.9% | — |
| NYT Connections (extended) | 80% | — |
| ARC-AGI-1 | 87.5% | — |
| CritPt | 19.7% | — |
| Chess Puzzles | 40% | — |
| EBR-Bench | 30.5% | — |
| Mystery Game Puzzles | 34% | — |
| DTBench | 97.3% | — |
| LMCA | 48.5% | — |
| Epoch Capabilities Index | 156.44 | — |
Math Grok 4.6 leads
Grok 4.6: 67.0 (#24), Yi-Lightning: 36.2 (#172)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Math | 1423 | 1300 |
| FrontierMath (Tiers 1-3) | 66% | — |
| FrontierMath Tier 4 | 31.7% | — |
| OTIS Mock AIME 2024-2025 | 99.2% | — |
| ProofBench | 51% | — |
Knowledge Grok 4.6 leads
Grok 4.6: 63.3 (#20), Yi-Lightning: 35.4 (#185)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1467 | 1286 |
| GPQA Diamond | 94% | — |
| SimpleQA Verified | 49.3% | — |
Multimodal Not comparable
Grok 4.6: 43.6 (#23), Yi-Lightning: —
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1263 | — |
| Blueprint-Bench 2 | 33.2% | — |
| Furniture Assembly | 40% | — |
| LMArena Document | 1452 | — |
Multilingual Grok 4.6 leads
Grok 4.6: 53.0 (#74), Yi-Lightning: 42.2 (#196)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1420 | 1269 |
| LMArena Chinese | 1480 | 1320 |
| LMArena French | 1461 | 1305 |
| LMArena German | 1431 | 1267 |
| LMArena Japanese | 1376 | 1228 |
| LMArena Korean | 1397 | 1192 |
| LMArena Russian | 1422 | 1255 |
| LMArena Spanish | 1404 | 1315 |
Instruction Following Grok 4.6 leads
Grok 4.6: 75.4 (#63), Yi-Lightning: 67.4 (#196)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1431 | 1278 |
Long Context Grok 4.6 leads
Grok 4.6: 44.5 (#66), Yi-Lightning: 39.4 (#181)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1454 | 1297 |
Writing & Preference Grok 4.6 leads
Grok 4.6: 62.3 (#80), Yi-Lightning: 50.2 (#184)
| Benchmark | Grok 4.6 | Yi-Lightning |
|---|---|---|
| LMArena Text | 1428 | 1302 |
| LMArena Creative Writing | 1428 | 1280 |
| LMArena Multi-Turn | 1425 | 1311 |
Frequently asked questions
Is Grok 4.6 better than Yi-Lightning?
Grok 4.6 is the stronger model overall, scoring 56.9 to 37.1 on the Noometry Index.
Is Grok 4.6 or Yi-Lightning better for coding?
Grok 4.6 scores higher on coding benchmarks: 58.5 versus 27.4 in the Noometry coding category.
How many benchmarks do Grok 4.6 and Yi-Lightning share?
17 benchmarks have published results for both models. Grok 4.6 has 49 scored results on Noometry and Yi-Lightning has 18.