Gemini 3.8 Flash vs Grok 4.6: Release Comparison
Comparison of the Gemini 3.8 Flash and Grok 4.6 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, Grok 4.6 scores highest: Grok 4.6 (high) at 44, against Gemini 3.8 Flash (high) at 41 for Gemini 3.8 Flash.
- For output speed, Gemini 3.8 Flash is fastest: Gemini 3.8 Flash (high) at 336 t/s, against Grok 4.6 (high) at 59 t/s for Grok 4.6.
- For cost per task, Grok 4.6 is cheapest: Grok 4.6 (low) at $0.48, 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 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grok 4.6 (high) |  SpaceXAI | 44 | 49 | 53 | 52 | 45 | 45 | 54 | $1.86 | $1.4 | $2.00 | $6.00 | $0.50 | $2,352 | 36k | 19k | 94M | 59 | 36.19s | 36.19s | 44.65s | 607.36s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.6 (xhigh) | SpaceXAI | 44 | 49 | 51 | 52 | - | 45 | 55 | $2.32 | $1.4 | $2.00 | $6.00 | $0.50 | $2,830 | 38k | 20k | 97M | 55 | 33.14s | 33.14s | 42.30s | 677.63s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.6 (medium) | SpaceXAI | 43 | 47 | 49 | 50 | - | 44 | 53 | $1.50 | $1.4 | $2.00 | $6.00 | $0.50 | $1,937 | 28k | 14k | 73M | 54 | 32.75s | 32.75s | 41.96s | 520.58s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| 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 | 336 | 16.28s | 16.28s | 17.77s | 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 | - | | |
| Grok 4.6 (low) | SpaceXAI | 35 | 39 | 44 | 44 | - | 35 | 46 | $0.48 | $1.4 | $2.00 | $6.00 | $0.50 | $761 | 10k | 2k | 21M | 52 | 5.63s | 5.63s | 15.22s | 199.23s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | 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 | - | | |