GPT-6 Luna vs GPT-6 Astra: Release Comparison
Comparison of the GPT-6 Luna and GPT-6 Astra releases: 6 and 5 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 11 models.
- For intelligence, GPT-6 Astra scores highest: GPT-6 Astra (max) at 53, against GPT-6 Luna (max) at 37 for GPT-6 Luna.
- For output speed, GPT-6 Luna is fastest: GPT-6 Luna (max) at 157 t/s, against GPT-6 Astra (max) at 58 t/s for GPT-6 Astra.
Releases compared
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 | 58 | 323.74s | 323.74s | 332.41s | 476.81s | - | 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 | 54 | 198.11s | 198.11s | 207.34s | 310.12s | - | 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 | 79.00s | 79.00s | 89.26s | 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 | 47 | 6.36s | 6.36s | 17.08s | 204.99s | - | 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 | 50 | 2.86s | 2.86s | 12.82s | 89.55s | - | 1M | Sep 2026 | Apr 2026 | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (max) | OpenAI | 37 | 39 | 45 | 39 | - | 37 | 45 | - | $0.1 | $0.10 | $0.50 | $0.01 | - | 51k | 39k | 145M | 157 | 152.68s | 152.68s | 155.86s | 318.47s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (xhigh) | OpenAI | 34 | 37 | 42 | 37 | - | 33 | 41 | - | $0.1 | $0.10 | $0.50 | $0.01 | - | 27k | 19k | 68M | 153 | 28.52s | 28.52s | 31.80s | 208.46s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (high) | OpenAI | 32 | 36 | 41 | 35 | - | 32 | 40 | - | $0.1 | $0.10 | $0.50 | $0.01 | - | 20k | 13k | 47M | 127 | 6.69s | 6.69s | 10.62s | 153.17s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (medium) | OpenAI | 29 | 32 | 37 | 33 | - | 29 | 37 | - | $0.1 | $0.10 | $0.50 | $0.01 | - | 11k | 6k | 28M | 143 | 5.28s | 5.28s | 8.78s | 79.51s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (low) | OpenAI | 21 | 24 | 22 | 25 | - | 23 | 30 | - | $0.1 | $0.10 | $0.50 | $0.01 | - | 2k | 515 | 8M | 152 | 1.59s | 1.59s | 4.89s | 13.89s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (Non-reasoning) | OpenAI | 18 | 20 | 20 | 19 | - | 21 | 24 | - | $0.1 | $0.10 | $0.50 | $0.01 | - | 4k | 0 | 7M | 131 | 0.74s | 0.74s | 4.57s | 28.01s | - | 1M | Sep 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |