Grok-4 Heavy vs Kimi K2 0905: Specs & Benchmark Comparison
| Characteristic | Grok-4 Heavy | Kimi K2 0905 |
|---|---|---|
| Company | xAI | Moonshot AI |
| Release Date | July 8, 2025 | September 5, 2025 |
| Parameters | — | 1.0T |
| Multimodal | Yes | No |
| Context (input) | — | 262K |
| Context (output) | — | 262K |
| Input Price / 1M | — | $0.60 |
| Output Price / 1M | — | $2.50 |
| Average Score | 0.8 | 0.8 |
| Benchmarks | ||
| GPQA | 0.9 | 0.8 |
Visual Benchmark Comparison
Grok-4 Heavy
Kimi K2 0905
GPQA0.9 vs 0.8
0.9
0.8
Verdict
Kimi K2 0905 leads in 1 out of 2 comparison categories.
Overall Performance
Both models show comparable average scores: Grok-4 Heavy — 0.8, Kimi K2 0905 — 0.8.
Recency
Kimi K2 0905 is newer: released 9/5/2025 vs 7/8/2025.
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Frequently Asked Questions
Which is better for coding — Grok-4 Heavy or Kimi K2 0905?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Grok-4 Heavy or Kimi K2 0905?
API pricing data is available on the individual model pages.
Which has a larger context window — Grok-4 Heavy or Kimi K2 0905?
Context window data is available on the individual model pages.
The Grok-4 Heavy and Kimi K2 0905 comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Grok-4 Heavy or Kimi K2 0905 page. See also the complete list of AI model comparisons.