Kimi K3 vs Grok 4.5
Rank, tier, score and price side by side, from our weekly rankings. Scores are editorial opinion based on public sources.
A
Kimi K3
B
Grok 4.5
- ProviderMoonshot AIxAI
- Rank#18Higher rank#24
- TierAA
- Score85.0Higher score83.8
- PriceOpen weights on Hugging Face; API $3 input / $15 output per 1M tokens ($0.30 cached input)API $2 input / $6 output per 1M tokens (prompts under 200K; $4 / $12 above); also in Grok subscriptions
- TaglineMoonshot AI's 2.8T-parameter mixture-of-experts model and the highest-scoring open-weight entry on the Artificial Analysis Intelligence Index.xAI's 2026 frontier release pairing native tool use with real-time search.
| Attribute | Kimi K3 | Grok 4.5 |
|---|---|---|
| Provider | Moonshot AI | xAI |
| Rank | #18Higher rank | #24 |
| Tier | A | A |
| Score | 85.0Higher score | 83.8 |
| Price | Open weights on Hugging Face; API $3 input / $15 output per 1M tokens ($0.30 cached input) | API $2 input / $6 output per 1M tokens (prompts under 200K; $4 / $12 above); also in Grok subscriptions |
| Tagline | Moonshot AI's 2.8T-parameter mixture-of-experts model and the highest-scoring open-weight entry on the Artificial Analysis Intelligence Index. | xAI's 2026 frontier release pairing native tool use with real-time search. |