Model comparison
Inkling vs Kimi K2.5 Instant
Inkling is the stronger model overall, scoring 44.1 to 42.9 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Inkling scores higher in 5 categories and Kimi K2.5 Instant in 3 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Inkling leads 55.2 to 39.5.
Side by side
| Inkling | Kimi K2.5 Instant | |
|---|---|---|
| Provider | Thinking Machines Lab | Moonshot AI |
| Noometry Index | 44.1 | 42.9 |
| Released | 2026-07-15 | — |
| Weights | Open | Open |
| Context window | 66K | — |
| Max output | 66K | — |
| Input $ / M tokens | $1.87 | — |
| Output $ / M tokens | $4.68 | — |
| Results tracked | 41 | 18 |
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Category by category
Coding Kimi K2.5 Instant leads
Inkling: 34.1 (#229), Kimi K2.5 Instant: 42.3 (#95)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena WebDev | 1412 | 1404 |
| LMArena Coding | 1463 | 1483 |
| FrontierCode | 14% | — |
| FrontierSWE | 4.1% | — |
| SciCode | 47% | — |
| WeirdML | 32.3% | — |
| ALE-Bench | 946 | — |
Agentic & Tool Use Not comparable
Inkling: 29.5 (#76), Kimi K2.5 Instant: —
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| APEX-Agents | 33.8% | — |
| τ²-bench Banking | 25% | — |
Reasoning Inkling leads
Inkling: 40.6 (#48), Kimi K2.5 Instant: 28.5 (#88)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Hard Prompts | 1452 | 1443 |
| ARC-AGI-2 | 36.5% | — |
| SimpleBench | 50% | — |
| ARC-AGI-1 | 79.5% | — |
| CritPt | 5.4% | — |
| Chess Puzzles | 21% | — |
| DTBench | 87.5% | — |
| LMCA | 37.6% | — |
| Epoch Capabilities Index | 148.6 | — |
Math Kimi K2.5 Instant leads
Inkling: 31.2 (#198), Kimi K2.5 Instant: 36.6 (#105)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Math | 1482 | 1443 |
| FrontierMath (Tiers 1-3) | 33.3% | — |
| FrontierMath Tier 4 | 4.9% | — |
| OTIS Mock AIME 2024-2025 | 88.9% | — |
| ProofBench | 0% | — |
Knowledge Inkling leads
Inkling: 55.2 (#44), Kimi K2.5 Instant: 39.5 (#121)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Expert | 1468 | 1438 |
| GPQA Diamond | 88.3% | — |
| SimpleQA Verified | 40.3% | — |
Multimodal Not comparable
Inkling: —, Kimi K2.5 Instant: 39.5 (#47)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Vision | — | 1254 |
Multilingual Inkling leads
Inkling: 54.2 (#49), Kimi K2.5 Instant: 52.2 (#89)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Non-English | 1434 | 1406 |
| LMArena Chinese | 1495 | 1450 |
| LMArena French | 1453 | 1403 |
| LMArena German | 1456 | 1413 |
| LMArena Korean | 1401 | 1378 |
| LMArena Russian | 1430 | 1404 |
| LMArena Spanish | 1442 | 1448 |
| LMArena Japanese | 1428 | — |
Instruction Following Too close to call
Inkling: 75.3 (#65), Kimi K2.5 Instant: 75.5 (#61)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Instruction Following | 1427 | 1430 |
Long Context Too close to call
Inkling: 43.9 (#79), Kimi K2.5 Instant: 43.8 (#82)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Longer Query | 1436 | 1435 |
Writing & Preference Inkling leads
Inkling: 65.5 (#48), Kimi K2.5 Instant: 60.8 (#91)
| Benchmark | Inkling | Kimi K2.5 Instant |
|---|---|---|
| LMArena Text | 1443 | 1420 |
| LMArena Creative Writing | 1390 | 1379 |
| LMArena Multi-Turn | 1436 | 1427 |
| EQ-Bench Creative Writing | 1611 | — |
| EQ-Bench 4 | 1226 | — |
Frequently asked questions
Is Inkling better than Kimi K2.5 Instant?
Inkling is the stronger model overall, scoring 44.1 to 42.9 on the Noometry Index.
Is Inkling or Kimi K2.5 Instant better for coding?
Kimi K2.5 Instant scores higher on coding benchmarks: 42.3 versus 34.1 in the Noometry coding category.
How many benchmarks do Inkling and Kimi K2.5 Instant share?
17 benchmarks have published results for both models. Inkling has 41 scored results on Noometry and Kimi K2.5 Instant has 18.