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Kimi K2 Thinking vs Kimi K3
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| Attribute | Kimi K2 Thinking | Kimi K3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 146 | 158 |
| Coding | 37 | 97 |
| Math | 18 | 80 |
| Reasoning & Knowledge | 32 | 73 |
| Agentic & Tools | 23 | 72 |
| Specifications | ||
| Developer | Moonshot | Moonshot |
| Family | Kimi | Kimi |
| Released | Nov 6, 2025 | Jul 16, 2026 |
| Parameters | 1T | 2.8T |
| Availability | Open weights (restricted use) | Open weights (non-commercial) |
| Context window | 262K | 1M |
| Price — $/M input | $0.60 | $2.10 |
| Price — $/M output | $2.50 | $10.95 |
| Inputs | text | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 83% | 97% |
| APEX | 4% | 51% |
| FrontierMath | 21% | — |
| FrontierMath Tier 4 | 0% | — |
| GPQA Diamond | 84% | 93% |
| Humanity's Last Exam | 24% | 47% |
| LiveCodeBench | 85% | — |
| METR task horizon | 54 min | — |
| MMLU-Pro | 85% | — |
| SciCode | 42% | 60% |
| SimpleQA Verified | 32% | 51% |
| Terminal-Bench | 36% | — |
| WebDev Arena | 1337 | 1674 |
| WeirdML | 43% | 83% |
| τ²-bench | 93% | — |
| ARC-AGI | — | 95% |
| ARC-AGI-2 | — | 60% |
| SimpleBench | — | 61% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.