Bard vs Kimi K2
Google Bard | Moonshot AI Kimi K2 | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | |
| Release date | Mar 21 2023 | Jul 11 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 1T |
Context window | — | 128k |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | — | 10% |
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 | Bard shipped 843 days before Kimi K2 | |
Which is better: Bard or Kimi K2?
Bard and Kimi K2 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Bard shipped 843 days before Kimi K2, so benchmark comparisons should account for the intervening progress.
Bard is proprietary, while Kimi K2 is open weight.
Direct benchmark comparisons are unavailable — Bard and Kimi K2 don't publish scores on any of the same benchmarks.
Frequently asked questions
Bard was released by Google on Mar 21 2023.
Kimi K2 was released by Moonshot AI on Jul 11 2025.
Bard is a proprietary model released by Google. Kimi K2 is an open weight model released by Moonshot AI.