Model comparison
Grok 4.20 (Non-Reasoning) vs Kimi K2.7 Code
Grok 4.20 (Non-Reasoning) is the stronger model overall, scoring 48.6 to 43.3 on the Noometry Index.
Last verified . 11 shared benchmarks.
Summary
- They share 11 benchmarks with published results for both. Grok 4.20 (Non-Reasoning) scores higher in 2 categories and Kimi K2.7 Code in 3 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.20 (Non-Reasoning) leads 52.3 to 39.0.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 44.9% for Grok 4.20 (Non-Reasoning) and 54% for Kimi K2.7 Code.
- Grok 4.20 (Non-Reasoning) is cheaper at $1.25 / $2.50 per million input/output tokens, against $0.95 / $4 for Kimi K2.7 Code.
- Grok 4.20 (Non-Reasoning) accepts more context: 1M tokens versus 262K.
- Kimi K2.7 Code has downloadable open weights; the other is API-only.
Side by side
| Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code | |
|---|---|---|
| Provider | xAI | Moonshot AI |
| Noometry Index | 48.6 | 43.3 |
| Released | 2026-02-17 | 2026-06-12 |
| Weights | Proprietary | Open |
| Context window | 1M | 262K |
| Max output | 30K | 262K |
| Input $ / M tokens | $1.25 | $0.95 |
| Output $ / M tokens | $2.50 | $4 |
| Results tracked | 46 | 19 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Too close to call
Grok 4.20 (Non-Reasoning): 42.1 (#112), Kimi K2.7 Code: 42.9 (#95)
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| LMArena WebDev | 1375 | 1473 |
| WeirdML | 52.3% | 54.1% |
| ALE-Bench | 1,150 | 886.23 |
| DeepSWE | — | 30.5% |
| FrontierCode | — | 30.1% |
| SciCode | — | 47.5% |
| LMArena Coding | 1459 | — |
Agentic & Tool Use Grok 4.20 (Non-Reasoning) leads
Grok 4.20 (Non-Reasoning): 34.4 (#46), Kimi K2.7 Code: 24.0 (#122)
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| Vending-Bench 2 | 4,663 | 5,083 |
| Terminal-Bench | 57.3% | — |
| APEX-Agents | — | 37.6% |
| τ²-bench Banking | 18% | — |
| GBAEval | — | 0.9% |
| LMArena Search | 1189 | — |
Reasoning Grok 4.20 (Non-Reasoning) leads
Grok 4.20 (Non-Reasoning): 52.3 (#32), Kimi K2.7 Code: 39.0 (#61)
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| Chess Puzzles | 24% | 21% |
| Epoch Capabilities Index | 151.98 | 149.97 |
| ARC-AGI-2 | 65.1% | — |
| SimpleBench | — | 57.9% |
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | 85.4% | — |
| ARC-AGI-1 | 89.5% | — |
| CritPt | — | 10% |
| Thematic Generalization | 63.8% | — |
| LMArena Hard Prompts | 1451 | — |
| DTBench | 90.1% | — |
| LMCA | 38.7% | — |
| Surface Evolver Bench | — | 48.8% |
| ForecastBench | 61.4 | — |
Math Kimi K2.7 Code leads
Grok 4.20 (Non-Reasoning): 48.2 (#65), Kimi K2.7 Code: 52.9 (#48)
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| FrontierMath (Tiers 1-3) | 44.9% | 54% |
| FrontierMath Tier 4 | 17.1% | 12.2% |
| OTIS Mock AIME 2024-2025 | 92.2% | 95.6% |
| ProofBench | 14% | — |
| LMArena Math | 1455 | — |
Knowledge Too close to call
Grok 4.20 (Non-Reasoning): 52.8 (#60), Kimi K2.7 Code: 53.5 (#57)
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| GPQA Diamond | 89.3% | 87.9% |
| SimpleQA Verified | 30.2% | 36.5% |
| LMArena Expert | 1439 | — |
Multimodal Not comparable
Grok 4.20 (Non-Reasoning): 33.3 (#98), Kimi K2.7 Code: —
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| LMArena Vision | 1263 | — |
| Blueprint-Bench 2 | 0% | — |
| LMArena Document | 1416 | — |
Multilingual Not comparable
Grok 4.20 (Non-Reasoning): 54.5 (#40), Kimi K2.7 Code: —
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| LMArena Non-English | 1441 | — |
| LMArena Chinese | 1481 | — |
| LMArena French | 1476 | — |
| LMArena German | 1465 | — |
| LMArena Japanese | 1449 | — |
| LMArena Korean | 1417 | — |
| LMArena Russian | 1458 | — |
| LMArena Spanish | 1443 | — |
Instruction Following Not comparable
Grok 4.20 (Non-Reasoning): 74.8 (#83), Kimi K2.7 Code: —
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| LMArena Instruction Following | 1420 | — |
Long Context Not comparable
Grok 4.20 (Non-Reasoning): 45.5 (#34), Kimi K2.7 Code: —
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| CL-bench | 22.2% | — |
| CL-bench Life | 11.9% | — |
| LMArena Longer Query | 1437 | — |
Writing & Preference Not comparable
Grok 4.20 (Non-Reasoning): 65.7 (#44), Kimi K2.7 Code: —
| Benchmark | Grok 4.20 (Non-Reasoning) | Kimi K2.7 Code |
|---|---|---|
| LMArena Text | 1451 | — |
| LMArena Creative Writing | 1438 | — |
| EQ-Bench Creative Writing | 1574 | — |
| LMArena Multi-Turn | 1456 | — |
Frequently asked questions
Is Grok 4.20 (Non-Reasoning) better than Kimi K2.7 Code?
Grok 4.20 (Non-Reasoning) is the stronger model overall, scoring 48.6 to 43.3 on the Noometry Index.
Which is cheaper, Grok 4.20 (Non-Reasoning) or Kimi K2.7 Code?
Grok 4.20 (Non-Reasoning) is cheaper. It lists at $1.25 per million input tokens and $2.50 per million output tokens; Kimi K2.7 Code lists at $0.95 and $4.
Is Grok 4.20 (Non-Reasoning) or Kimi K2.7 Code better for coding?
They score almost the same on coding (42.1 vs 42.9); test both on your own repository before choosing.
Which has the bigger context window?
Grok 4.20 (Non-Reasoning) does, with 1M tokens against 262K.
How many benchmarks do Grok 4.20 (Non-Reasoning) and Kimi K2.7 Code share?
11 benchmarks have published results for both models. Grok 4.20 (Non-Reasoning) has 46 scored results on Noometry and Kimi K2.7 Code has 19.