Model comparison
Grok Build 0.1 vs Kimi K2.5 Instant
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 36.4 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Grok Build 0.1 | Kimi K2.5 Instant | |
|---|---|---|
| Provider | xAI | Moonshot AI |
| Noometry Index | 36.4 | 43.6 |
| Released | 2026-04-16 | — |
| Weights | Proprietary | Open |
| Context window | 256K | — |
| Max output | 256K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $2 | — |
| Results tracked | 3 | 18 |
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Category by category
Coding Too close to call
Grok Build 0.1: 43.1 (#91), Kimi K2.5 Instant: 42.6 (#97)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena WebDev | — | 1404 |
| SciCode | 50.2% | — |
| LMArena Coding | — | 1484 |
Agentic & Tool Use Not comparable
Grok Build 0.1: 22.7 (#129), Kimi K2.5 Instant: —
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| GBAEval | 2.4% | — |
Reasoning Grok Build 0.1 leads
Grok Build 0.1: 32.2 (#77), Kimi K2.5 Instant: 29.7 (#90)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| CritPt | 9.1% | — |
| LMArena Hard Prompts | — | 1443 |
Math Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 39.4 (#105)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Math | — | 1442 |
Knowledge Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 40.2 (#123)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Expert | — | 1440 |
Multimodal Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 40.2 (#50)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Vision | — | 1254 |
Multilingual Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 52.0 (#94)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Non-English | — | 1406 |
| LMArena Chinese | — | 1449 |
| LMArena French | — | 1403 |
| LMArena German | — | 1413 |
| LMArena Korean | — | 1378 |
| LMArena Russian | — | 1404 |
| LMArena Spanish | — | 1447 |
Instruction Following Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 75.3 (#65)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Instruction Following | — | 1430 |
Long Context Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 43.9 (#83)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Longer Query | — | 1435 |
Writing & Preference Not comparable
Grok Build 0.1: —, Kimi K2.5 Instant: 60.6 (#95)
| Benchmark | Grok Build 0.1 | Kimi K2.5 Instant |
|---|---|---|
| LMArena Text | — | 1420 |
| LMArena Creative Writing | — | 1381 |
| LMArena Multi-Turn | — | 1427 |
Frequently asked questions
Is Grok Build 0.1 better than Kimi K2.5 Instant?
Kimi K2.5 Instant is the stronger model overall, scoring 43.6 to 36.4 on the Noometry Index.
Is Grok Build 0.1 or Kimi K2.5 Instant better for coding?
They score almost the same on coding (43.1 vs 42.6); test both on your own repository before choosing.
How many benchmarks do Grok Build 0.1 and Kimi K2.5 Instant share?
0 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Kimi K2.5 Instant has 18.