Kimi K2.7 Code vs Grok 4 Heavy
Moonshot AI Kimi K2.7 Code | SpaceXAI Grok 4 Heavy | |
|---|---|---|
| Overview | ||
| Company | Moonshot AI | SpaceXAI |
| Release date | Jun 12 2026 | Jul 9 2025 |
| Access | Open Weight | Proprietary |
| Specifications | ||
Parameters | 1T | — |
Context window | 256k | — |
| Benchmarks | ||
Next.js coding Next.js EvalsVercel's open eval of how well AI coding agents build and migrate real Next.js apps — measured as the share of tasks the agent completes successfully. Higher is better. | 75% | — |
| Timeline | ||
| Release gap | Grok 4 Heavy shipped 338 days before Kimi K2.7 Code | |
Which is better: Kimi K2.7 Code or Grok 4 Heavy?
Kimi K2.7 Code and Grok 4 Heavy don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4 Heavy shipped 338 days before Kimi K2.7 Code, so benchmark comparisons should account for the intervening progress.
Kimi K2.7 Code is open weight, while Grok 4 Heavy is proprietary.
Direct benchmark comparisons are unavailable — Kimi K2.7 Code and Grok 4 Heavy don't publish scores on any of the same benchmarks.
Frequently asked questions
Kimi K2.7 Code was released by Moonshot AI on Jun 12 2026.
Grok 4 Heavy was released by SpaceXAI on Jul 9 2025.
Kimi K2.7 Code is an open weight model released by Moonshot AI. Grok 4 Heavy is a proprietary model released by SpaceXAI.
Other comparisons
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