Grok 4.7 vs Kimi K3
Grok 4.7 vs Kimi K3: which AI model is cheaper, has the larger context window and more capabilities? Side-by-side comparison updated daily.
Quick verdict
- Grok 4.7 is 2.0× cheaper than Kimi K3 for the same mix of input and output tokens.
- Kimi K3 has the larger context window (1M), useful for long documents and big codebases.
- Grok 4.7 is the more recent release (Sep 21, 2026).
- Only Kimi K3 has openly published weights you can run yourself.
- Choose Grok 4.7 if cost matters most; choose Kimi K3 if you need its specific strengths above. For the best results, test both on your own prompts.
| Grok 4.7 | Kimi K3 | |
|---|---|---|
| Company | xAI | Moonshot AI |
| Released | Sep 21, 2026 ● | Jul 16, 2026 |
| Overall index | — | 157.7 |
| GPQA Diamond | — | 93.1% |
| AIME math | — | 97.2% |
| FrontierMath | — | 72.2% |
| SimpleQA Verified | — | 50.6% |
| Input (per 1M tokens) | $2 ● | $3 |
| Output (per 1M tokens) | $6 ● | $15 |
| Cost for 1M input + 1M output tokens | $8.00 ● | $18.00 |
| Providers | 5 | 22 ● |
| Context | 500K | 1M ● |
| Max output | 450K | 944K ● |
| Inputs | Text, Image, Files | Text, Image, Video |
| Outputs | Text | Text |
| Reasoning | ✓ | ✓ |
| Tool use | ✓ | ✓ |
| Structured output | ✓ | ✓ |
| Open weights | — | ✓ |