Gemini 3.8 Flash vs Grok 4.3: Release Comparison
Comparison of the Gemini 3.8 Flash and Grok 4.3 releases: 3 and 4 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 7 models.
- For intelligence, Gemini 3.8 Flash scores highest: Gemini 3.8 Flash (high) at 41, against Grok 4.3 (high) at 25 for Grok 4.3.
- For output speed, Gemini 3.8 Flash is fastest: Gemini 3.8 Flash (high) at 332 t/s, against Grok 4.3 (high) at 114 t/s for Grok 4.3.
- For cost per task, Grok 4.3 is cheapest: Grok 4.3 (Non-reasoning) at $0.14, against Gemini 3.8 Flash (medium) at $0.93 for Gemini 3.8 Flash.
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 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gemini 3.8 Flash (high) |  Google | 41 | 47 | 49 | 52 | 42 | 43 | 53 | $1.24 | $0.6 | $0.75 | $3.75 | $0.075 | $1,623 | 71k | 43k | 172M | 332 | 14.66s | 14.66s | 16.16s | 209.25s | - | 1M | Sep 2026 | - | Yes | Supports: text, image, speech, and video | Supports: text | Not available | - | | |
| Gemini 3.8 Flash (medium) | Google | 40 | 45 | 49 | 51 | - | 41 | 51 | $0.93 | $0.6 | $0.75 | $3.75 | $0.075 | $1,100 | 53k | 27k | 95M | - | - | - | - | - | - | 1M | Sep 2026 | - | Yes | Supports: text, image, speech, and video | Supports: text | Not available | - | | |
| Gemini 3.8 Flash (low) | Google | 34 | 40 | 39 | 45 | - | 35 | 46 | - | $0.6 | $0.75 | $3.75 | $0.075 | - | - | - | - | - | - | - | - | - | - | 1M | Sep 2026 | - | Yes | Supports: text, image, speech, and video | Supports: text | Not available | - | | |
| 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 | 114 | 18.32s | 18.32s | 22.71s | 155.89s | - | 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 | - | - | - | - | 108 | 12.57s | 12.57s | 17.21s | - | - | 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 | - | - | - | - | 102 | 4.55s | 4.55s | 9.43s | - | - | 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 | 108 | 0.70s | 0.70s | 5.32s | 86.55s | - | 1M | Apr 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |