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Bard vs Kimi K2 (0905)

Google Bard vs Moonshot AI Kimi K2 (0905) — side-by-side specs.

Google
Bard
Moonshot AI
Kimi K2 (0905)
Overview
CompanyGoogleMoonshot AI
Release dateMar 21 2023Sep 5 2025
Model type
Open sourceNoYes
Specifications
Parameters
1T
Context window
256k
Benchmarks
Coding
SWE-Bench Verified
65.8%
Science
GPQA Diamond
75.1%
Timeline
Release gapBard shipped 899 days before Kimi K2 (0905)

Which is better: Bard or Kimi K2 (0905)?

Bard and Kimi K2 (0905) don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Bard shipped 899 days before Kimi K2 (0905), so benchmark comparisons should account for the intervening progress.

Kimi K2 (0905) is an open-source / open-weight model; Bard is proprietary.

Direct benchmark comparisons are unavailable — Bard and Kimi K2 (0905) don't publish scores on any of the same benchmarks.

Frequently asked questions

When was Bard released?
Bard was released by Google on Mar 21 2023.
When was Kimi K2 (0905) released?
Kimi K2 (0905) was released by Moonshot AI on Sep 5 2025.
Is Bard or Kimi K2 (0905) open source?
Kimi K2 (0905) is an open-source / open-weight model released by Moonshot AI. Bard is a proprietary model released by Google.

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