Gemini 1.0 Ultra vs Kimi K2 (0905)
Google Gemini 1.0 Ultra | Moonshot AI Kimi K2 (0905) | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | |
| Release date | Feb 8 2024 | Sep 5 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 1T |
Context window | — | 256k |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | — | 65.8% |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 75.1% |
| Timeline | ||
| Release gap | Gemini 1.0 Ultra shipped 575 days before Kimi K2 (0905) | |
Which is better: Gemini 1.0 Ultra or Kimi K2 (0905)?
Gemini 1.0 Ultra and Kimi K2 (0905) don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 1.0 Ultra shipped 575 days before Kimi K2 (0905), so benchmark comparisons should account for the intervening progress.
Gemini 1.0 Ultra is proprietary, while Kimi K2 (0905) is open weight.
Direct benchmark comparisons are unavailable — Gemini 1.0 Ultra and Kimi K2 (0905) don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 1.0 Ultra was released by Google on Feb 8 2024.
Kimi K2 (0905) was released by Moonshot AI on Sep 5 2025.
Gemini 1.0 Ultra is a proprietary model released by Google. Kimi K2 (0905) is an open weight model released by Moonshot AI.
Other comparisons
Gemini 1.0 Ultra vs Claude Sonnet 5Kimi K2 (0905) vs Claude Sonnet 5Gemini 1.0 Ultra vs GPT-5.6 SolKimi K2 (0905) vs GPT-5.6 SolGemini 1.0 Ultra vs Muse Spark 1.1Kimi K2 (0905) vs Muse Spark 1.1Gemini 1.0 Ultra vs Grok 4.5Kimi K2 (0905) vs Grok 4.5Gemini 1.0 Ultra vs DeepSeek-V4-ProKimi K2 (0905) vs DeepSeek-V4-ProGemini 1.0 Ultra vs Mistral Medium 3.5Kimi K2 (0905) vs Mistral Medium 3.5