Gemini 3.1 Pro vs Kimi K3
Gemini 3.1 Pro (Google DeepMind) and Kimi K3 (Moonshot) compared on benchmarks, pricing, context window, and use-case rankings.
- Kimi K3 leads on overall intelligence (ECI 158 vs 155).
- Kimi K3 ranks higher for coding (97th vs 56th percentile).
| Attribute | Gemini 3.1 Pro | Kimi K3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 155 | 158 |
| Coding | 56 | 97 |
| Math | 70 | 81 |
| Reasoning & Knowledge | 91 | 73 |
| Agentic & Tools | 78 | 80 |
| Specifications | ||
| Developer | Google DeepMind | Moonshot |
| Family | Gemini | Kimi |
| Released | Feb 19, 2026 | Jul 16, 2026 |
| Parameters | — | 2.8T |
| Availability | API access | Open weights (non-commercial) |
| Context window | — | 1M |
| Price — $/M input | — | $2.55 |
| Price — $/M output | — | $12.75 |
| Inputs | — | text, image, video |
| Outputs | — | text |
| Benchmarks | ||
| AIME 2024/2025 | 96% | 97% |
| APEX | 34% | 39% |
| ARC-AGI | 98% | 95% |
| ARC-AGI-2 | 77% | 60% |
| FrontierMath | 37% | — |
| FrontierMath Tier 4 | 17% | — |
| GPQA Diamond | 94% | 93% |
| GSO (code optimization) | 23% | — |
| Humanity's Last Exam | 46% | 47% |
| METR task horizon | 6.4 h | — |
| SimpleBench | 80% | 61% |
| SimpleQA Verified | 74% | 51% |
| SWE-bench Verified | 76% | — |
| Terminal-Bench | 80% | — |
| WebDev Arena | 1446 | 1674 |
| WeirdML | 72% | 83% |
| SciCode | — | 60% |
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.
Frequently asked questions
Is Gemini 3.1 Pro better than Kimi K3?
On Epoch AI's Capabilities Index, Kimi K3 scores higher (158) than Gemini 3.1 Pro (155). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
Which is better for coding, Gemini 3.1 Pro or Kimi K3?
Across coding benchmarks like SWE-bench Verified and Terminal-Bench, Kimi K3 ranks higher — 97th vs 56th percentile among the models tracked on Model Beat.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.