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gpt-oss-120b vs Kimi K3
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| Attribute | gpt-oss-120b | Kimi K3 |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 140 | 158 |
| Coding | 35 | 97 |
| Math | 42 | 80 |
| Reasoning & Knowledge | 15 | 73 |
| Agentic & Tools | 7 | 73 |
| Specifications | ||
| Developer | OpenAI | Moonshot |
| Family | GPT | Kimi |
| Released | Aug 5, 2025 | Jul 16, 2026 |
| Parameters | 116.8B | 2.8T |
| Availability | Open weights (unrestricted) | Open weights (non-commercial) |
| Context window | 131K | 1M |
| Price — $/M input | $0.03 | $2.10 |
| Price — $/M output | $0.17 | $10.95 |
| Inputs | text | text, image, video |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 89% | 97% |
| APEX | 4% | 51% |
| GPQA Diamond | 76% | 93% |
| Humanity's Last Exam | 20% | 47% |
| LiveCodeBench | 88% | — |
| METR task horizon | 42 min | — |
| MMLU-Pro | 81% | — |
| SciCode | 34% | 60% |
| SimpleBench | 22% | 61% |
| SimpleQA Verified | 14% | 51% |
| Terminal-Bench | 19% | — |
| WeirdML | 48% | 83% |
| τ²-bench | 66% | — |
| ARC-AGI | — | 95% |
| ARC-AGI-2 | — | 60% |
| WebDev Arena | — | 1674 |
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.