GPT-6 Astra vs Grok 4.6: Release Comparison
Comparison of the GPT-6 Astra and Grok 4.6 releases: 5 and 4 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 9 models.
- For intelligence, GPT-6 Astra scores highest: GPT-6 Astra (max) at 53, against Grok 4.6 (high) at 44 for Grok 4.6.
- For output speed, Grok 4.6 is fastest: Grok 4.6 (high) at 61 t/s, against GPT-6 Astra (max) at 52 t/s for GPT-6 Astra.
- For cost per task, Grok 4.6 is cheapest: Grok 4.6 (low) at $0.48, against GPT-6 Astra (low) at $0.82 for GPT-6 Astra.
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Intelligence Index Task
Cost per Task (USD, Log Scale)
Cost
Cost per Intelligence Index Task
Speed & Latency
Output Speed
Capability Scores
Capability Indexes
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, AutomationBench-AA, AA-LCR v1.1, GDP.pdf · Higher is better
Incorporates 7 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, Humanity's Last Exam, AA-LCR v1.1, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, GDPval-AA v2.1, AA-Briefcase v1.1, MLCR-AA, Humanity's Last Exam, AutomationBench-AA · Higher is better
Incorporates 6 evaluations: AA-Omniscience, Humanity's Last Exam, CritPt, GDPval-AA v2.1, AA-Briefcase v1.1, Terminal-Bench 4.0 · Higher is better
Incorporates 5 evaluations: AA-Omniscience, Humanity's Last Exam, GDPval-AA v2.1, AA-Briefcase v1.1, AA-LCR v1.1 · Higher is better
Further details
Input modality | Output modality | Weights | Provider Benchmarks | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GPT-6 Astra (max) |  OpenAI | 53 | 55 | 57 | 59 | 52 | 55 | 60 | $3.26 | $7.7 | $10.00 | $50.00 | $1.00 | $5,324 | 27k | 17k | 60M | 52 | 352.15s | 352.15s | 361.67s | 525.19s | - | 1M | Sep 2026 | Apr 2026 | Yes | Supports: text and image | Supports: text | Not available | - |   | |
| GPT-6 Astra (xhigh) | OpenAI | 52 | 54 | 57 | 58 | - | 55 | 59 | $2.31 | $7.7 | $10.00 | $50.00 | $1.00 | $3,803 | 17k | 9k | 38M | 51 | 206.20s | 206.20s | 216.01s | 328.43s | - | 1M | Sep 2026 | Apr 2026 | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Astra (high) | OpenAI | 51 | 53 | 55 | 58 | - | 53 | 58 | $1.73 | $7.7 | $10.00 | $50.00 | $1.00 | $2,925 | 12k | 5k | 26M | 49 | 73.16s | 73.16s | 83.42s | 242.90s | - | 1M | Sep 2026 | Apr 2026 | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Astra (medium) | OpenAI | 50 | 52 | 54 | 57 | - | 52 | 58 | $1.54 | $7.7 | $10.00 | $50.00 | $1.00 | $2,434 | 10k | 3k | 19M | 45 | 6.31s | 6.31s | 17.37s | 211.71s | - | 1M | Sep 2026 | Apr 2026 | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Astra (low) | OpenAI | 46 | 49 | 50 | 53 | - | 48 | 55 | $0.82 | $7.7 | $10.00 | $50.00 | $1.00 | $1,537 | 4k | 938 | 10M | 46 | 3.07s | 3.07s | 13.83s | 97.18s | - | 1M | Sep 2026 | Apr 2026 | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.6 (high) |  SpaceXAI | 44 | 49 | 52 | 52 | 45 | 45 | 54 | $1.86 | $1.4 | $2.00 | $6.00 | $0.50 | $2,352 | 36k | 19k | 94M | 61 | 45.30s | 45.30s | 53.51s | 589.20s | - | 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 | 60 | 51.74s | 51.74s | 60.11s | 623.71s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.6 (medium) | SpaceXAI | 43 | 47 | 49 | 49 | - | 43 | 53 | $1.50 | $1.4 | $2.00 | $6.00 | $0.50 | $1,937 | 28k | 14k | 73M | 60 | 23.88s | 23.88s | 32.23s | 477.13s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Grok 4.6 (low) | SpaceXAI | 35 | 38 | 44 | 44 | - | 35 | 45 | $0.48 | $1.4 | $2.00 | $6.00 | $0.50 | $761 | 10k | 2k | 21M | 57 | 7.62s | 7.62s | 16.36s | 181.80s | - | 500k | Aug 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |