Grok 4.3 vs LongCat Flash Lite
xAI vs LongCat — benchmarks, pricing, and capabilities side by side.
- •Grok 4.3 has the higher intelligence index (90.1 vs 63.6)
- •LongCat Flash Lite is cheaper ($0.00 vs $1.25 per 1M input)
- •LongCat Flash Lite is faster
| Grok 4.3 | LongCat Flash Lite | |
|---|---|---|
| Intelligence index | 90.1 | 63.6 |
| Developer | xAI | LongCat |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 1,000,000 tokens | — |
| Input price | $1.25 / 1M | $0.00 / 1M |
| Output price | $2.50 / 1M | $0.00 / 1M |
| Speed | 88 tok/s | 110 tok/s |
| Released | May 6, 2026 | January 28, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
Grok 4.3
LongCat Flash Lite
GPQA Diamond
90.1
63.6
Humanity’s Last Exam
35
6