Kimi K3 vs Grok 4.3: Release Comparison
Comparison of the Kimi K3 and Grok 4.3 releases: 2 and 4 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 6 models.
- For intelligence, Kimi K3 scores highest: Kimi K3 (max) at 44, against Grok 4.3 (high) at 25 for Grok 4.3.
- For output speed, Grok 4.3 is fastest: Grok 4.3 (high) at 111 t/s, against Kimi K3 (max) at 35 t/s for Kimi K3.
- For cost per task, Grok 4.3 is cheapest: Grok 4.3 (Non-reasoning) at $0.14, against Kimi K3 (low) at $1.15 for Kimi K3.
Releases compared
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indices
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2, AA-Briefcase, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2, AA-Briefcase, Terminal-Bench 4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2, AA-Briefcase, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kimi K3 (max) |  Kimi | 44 | 47 | 51 | 49 | 45 | 43 | 53 | $2.00 | $2.3 | $3.00 | $15.00 | $0.30 | $3,658 | 48k | 32k | 161M | 35 | 4.52s | 62.04s | 76.42s | 1274.29s | 2.8T 104B active at inference time | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text |    +9 | |||
| Kimi K3 (low) | Kimi | 30 | 33 | 40 | 35 | - | 30 | 37 | $1.15 | $2.3 | $3.00 | $15.00 | $0.30 | $1,190 | 12k | 6k | 22M | 34 | 3.81s | 62.50s | 77.18s | 330.30s | 2.8T 104B active at inference time | 1M | Jul 2026 | - | Yes | Supports: text and image | Supports: text |   | |||
| Grok 4.3 (high) |  SpaceXAI | 25 | 28 | 18 | 33 | 27 | 31 | 41 | $0.17 | $0.6 | $1.25 | $2.50 | $0.20 | $332 | 18k | 11k | 87M | 111 | 19.61s | 19.61s | 24.11s | 161.88s | - | 1M | Apr 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - |   | |
| Grok 4.3 (medium) | SpaceXAI | 25 | - | - | - | - | - | - | - | $0.6 | $1.25 | $2.50 | $0.20 | - | - | - | - | 102 | 11.48s | 11.48s | 16.36s | - | - | 1M | Apr 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.3 (low) | SpaceXAI | 24 | - | - | - | - | - | - | - | $0.6 | $1.25 | $2.50 | $0.20 | - | - | - | - | 109 | 4.68s | 4.68s | 9.26s | - | - | 1M | Apr 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.3 (Non-reasoning) | SpaceXAI | 15 | 16 | 14 | 19 | - | 15 | 21 | $0.14 | $0.6 | $1.25 | $2.50 | $0.20 | $203 | 9k | 0 | 12M | 109 | 0.73s | 0.73s | 5.32s | 86.37s | - | 1M | Apr 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |