Kimi Linear vs Grok 4.5
Moonshot AI Kimi Linear | SpaceXAI Grok 4.5 | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | SpaceXAI |
| Release date | Oct 2025 | Jul 8 2026 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Parameters | 48B | — |
| Benchmarks | ||
Agentic coding SWE-Bench ProCan the AI fix real bugs in real software? It's handed actual problems from open-source projects and has to write code that genuinely solves them. Higher is better. | — | 64.7% |
Multilingual coding SWE-Bench MultilingualLike SWE-Bench, but the coding problems span many programming languages, not just one. Tests how broadly the AI can code. Higher is better. | — | 78% |
Agentic coding DeepSWE 1.0Artificial Analysis' independent test of deep, agentic software-engineering work — the AI has to plan and carry out substantial coding tasks end to end. Higher is better. | — | 62% |
Agentic terminal coding Terminal-Bench 2.1Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better. | — | 83.3% |
| Timeline | ||
| Release gap | Kimi Linear shipped 280 days before Grok 4.5 | |
Which is better: Kimi Linear or Grok 4.5?
Kimi Linear and Grok 4.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Kimi Linear shipped 280 days before Grok 4.5, so benchmark comparisons should account for the intervening progress.
Kimi Linear is open weight, while Grok 4.5 is proprietary.
Direct benchmark comparisons are unavailable — Kimi Linear and Grok 4.5 don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi Linear was released by Moonshot AI on Oct 2025.
Grok 4.5 was released by SpaceXAI on Jul 8 2026.
Kimi Linear is an open weight model released by Moonshot AI. Grok 4.5 is a proprietary model released by SpaceXAI.
Other comparisons
Kimi Linear vs Claude Sonnet 5Grok 4.5 vs Claude Sonnet 5Kimi Linear vs GPT-5.6 SolGrok 4.5 vs GPT-5.6 SolKimi Linear vs Gemini OmniGrok 4.5 vs Gemini OmniKimi Linear vs Muse SparkGrok 4.5 vs Muse SparkKimi Linear vs DeepSeek-V4-ProGrok 4.5 vs DeepSeek-V4-ProKimi Linear vs Mistral Medium 3.5Grok 4.5 vs Mistral Medium 3.5