Model comparison
Kimi K2.7 Code vs Kimi K3
Kimi K3 is the stronger model overall, scoring 59.5 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 3.5× less per token, which makes it the better buy when Kimi K3's lead doesn't matter for your workload.
Last verified . 19 shared benchmarks.
Summary
- They share 19 benchmarks with published results for both. Kimi K2.7 Code scores higher in 0 categories and Kimi K3 in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Kimi K3 leads 63.0 to 39.0.
- The biggest single-benchmark swing is GBAEval: 0.9% for Kimi K2.7 Code and 48.3% for Kimi K3.
- Kimi K2.7 Code is cheaper at $0.95 / $4 per million input/output tokens, against $3 / $15 for Kimi K3.
- Kimi K3 accepts more context: 1.05M tokens versus 262K.
Side by side
| Kimi K2.7 Code | Kimi K3 | |
|---|---|---|
| Provider | Moonshot AI | Moonshot AI |
| Noometry Index | 43.3 | 59.5 |
| Released | 2026-06-12 | 2026-07-16 |
| Weights | Open | Open |
| Context window | 262K | 1.05M |
| Max output | 262K | 1.05M |
| Input $ / M tokens | $0.95 | $3 |
| Output $ / M tokens | $4 | $15 |
| Results tracked | 19 | 53 |
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Category by category
Coding Kimi K3 leads
Kimi K2.7 Code: 42.9 (#95), Kimi K3: 61.0 (#10)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| DeepSWE | 30.5% | 68.5% |
| FrontierCode | 30.1% | 44.2% |
| LMArena WebDev | 1473 | 1654 |
| SciCode | 47.5% | 59.5% |
| WeirdML | 54.1% | 82.6% |
| ALE-Bench | 886.23 | 1,524 |
| FrontierSWE | — | 25.9% |
| LMArena Coding | — | 1508 |
Agentic & Tool Use Kimi K3 leads
Kimi K2.7 Code: 24.0 (#122), Kimi K3: 41.8 (#20)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| APEX-Agents | 37.6% | 50.6% |
| GBAEval | 0.9% | 48.3% |
| Vending-Bench 2 | 5,083 | 5,165 |
| τ²-bench Banking | — | 37.1% |
| PostTrainBench | — | 32% |
| GDP.pdf | — | 19% |
Reasoning Kimi K3 leads
Kimi K2.7 Code: 39.0 (#61), Kimi K3: 63.0 (#17)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| SimpleBench | 57.9% | 60.7% |
| CritPt | 10% | 23.4% |
| Chess Puzzles | 21% | 39% |
| Surface Evolver Bench | 48.8% | 95% |
| Epoch Capabilities Index | 149.97 | 157.45 |
| ARC-AGI-2 | — | 60.4% |
| NYT Connections (extended) | — | 93.6% |
| ARC-AGI-1 | — | 94.5% |
| LMArena Hard Prompts | — | 1496 |
| Mystery Game Puzzles | — | 26% |
| DTBench | — | 91.2% |
| LMCA | — | 52.7% |
| ForecastBench | — | 61.1 |
Math Kimi K3 leads
Kimi K2.7 Code: 52.9 (#48), Kimi K3: 74.2 (#16)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 54% | 72.2% |
| FrontierMath Tier 4 | 12.2% | 39% |
| OTIS Mock AIME 2024-2025 | 95.6% | 97.2% |
| MathArena Final-Answer Competitions | — | 87.8% |
| ProofBench | — | 87% |
| LMArena Math | — | 1491 |
Knowledge Kimi K3 leads
Kimi K2.7 Code: 53.5 (#57), Kimi K3: 63.2 (#21)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| GPQA Diamond | 87.9% | 93.1% |
| SimpleQA Verified | 36.5% | 50.6% |
| LMArena Expert | — | 1521 |
Multimodal Not comparable
Kimi K2.7 Code: —, Kimi K3: 37.8 (#70)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| Blueprint-Bench 2 | — | 29.5% |
| Furniture Assembly | — | 34.2% |
Multilingual Not comparable
Kimi K2.7 Code: —, Kimi K3: 56.3 (#21)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| LMArena Non-English | — | 1466 |
| LMArena Chinese | — | 1529 |
| LMArena French | — | 1491 |
| LMArena German | — | 1488 |
| LMArena Japanese | — | 1487 |
| LMArena Korean | — | 1458 |
| LMArena Russian | — | 1482 |
| LMArena Spanish | — | 1472 |
Instruction Following Not comparable
Kimi K2.7 Code: —, Kimi K3: 77.7 (#14)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| LMArena Instruction Following | — | 1483 |
Long Context Not comparable
Kimi K2.7 Code: —, Kimi K3: 45.8 (#29)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| LMArena Longer Query | — | 1494 |
Writing & Preference Not comparable
Kimi K2.7 Code: —, Kimi K3: 76.6 (#4)
| Benchmark | Kimi K2.7 Code | Kimi K3 |
|---|---|---|
| LMArena Text | — | 1476 |
| LMArena Creative Writing | — | 1454 |
| EQ-Bench Creative Writing | — | 2082 |
| EQ-Bench 4 | — | 1339 |
| LMArena Multi-Turn | — | 1488 |
Frequently asked questions
Is Kimi K2.7 Code better than Kimi K3?
Kimi K3 is the stronger model overall, scoring 59.5 to 43.3 on the Noometry Index. Kimi K2.7 Code costs 3.5× less per token, which makes it the better buy when Kimi K3's lead doesn't matter for your workload.
Which is cheaper, Kimi K2.7 Code or Kimi K3?
Kimi K2.7 Code is cheaper. It lists at $0.95 per million input tokens and $4 per million output tokens; Kimi K3 lists at $3 and $15.
Is Kimi K2.7 Code or Kimi K3 better for coding?
Kimi K3 scores higher on coding benchmarks: 61.0 versus 42.9 in the Noometry coding category.
Which has the bigger context window?
Kimi K3 does, with 1.05M tokens against 262K.
How many benchmarks do Kimi K2.7 Code and Kimi K3 share?
19 benchmarks have published results for both models. Kimi K2.7 Code has 19 scored results on Noometry and Kimi K3 has 53.