Claude Opus 5.5 vs GPT-6 Luna: Release Comparison
Comparison of the Claude Opus 5.5 and GPT-6 Luna releases: 5 and 6 models respectively, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across all 11 models.
- For intelligence, Claude Opus 5.5 scores highest: Claude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback) at 58, against GPT-6 Luna (max) at 37 for GPT-6 Luna.
- For output speed, GPT-6 Luna is fastest: GPT-6 Luna (xhigh) at 146 t/s, against Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) at 92 t/s for Claude Opus 5.5.
- For cost per task, GPT-6 Luna is cheapest: GPT-6 Luna (low) at $0.0045, against Claude Opus 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) at $0.55 for Claude Opus 5.5.
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 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback) |  Anthropic | 58 | 61 | 64 | 63 | 61 | 60 | 66 | $5.98 | $2.9 | $4.00 | $20.00 | $0.20 | $8,708 | 119k | 84k | 260M | - | - | - | - | - | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Opus 5.5 (Adaptive Reasoning, Xhigh Effort, Default Fallback) | Anthropic | 56 | 58 | 62 | 61 | - | 59 | 63 | $3.46 | $2.9 | $4.00 | $20.00 | $0.20 | $4,057 | 66k | 40k | 100M | 92 | 148.38s | 148.38s | 153.79s | 447.49s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback) | Anthropic | 54 | 56 | 59 | 59 | - | 56 | 61 | $1.82 | $2.9 | $4.00 | $20.00 | $0.20 | $2,172 | 36k | 18k | 53M | 90 | 27.02s | 27.02s | 32.57s | 262.46s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Opus 5.5 (Adaptive Reasoning, Medium Effort, Default Fallback) | Anthropic | 51 | 54 | 57 | 57 | - | 54 | 60 | $1.34 | $2.9 | $4.00 | $20.00 | $0.20 | $1,627 | 26k | 12k | 38M | 75 | 22.17s | 22.17s | 28.83s | 207.51s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| Claude Opus 5.5 (Adaptive Reasoning, Low Effort, Default Fallback) | Anthropic | 42 | 46 | 48 | 52 | - | 45 | 53 | $0.55 | $2.9 | $4.00 | $20.00 | $0.20 | $860 | 10k | 3k | 20M | 79 | 4.79s | 4.79s | 11.15s | 80.03s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (max) |  OpenAI | 37 | 39 | 45 | 39 | 37 | 37 | 45 | $0.07 | $0.1 | $0.10 | $0.50 | $0.01 | $122 | 51k | 39k | 145M | 132 | 104.42s | 104.42s | 108.20s | 353.43s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (xhigh) | OpenAI | 34 | 37 | 42 | 37 | - | 33 | 41 | $0.04 | $0.1 | $0.10 | $0.50 | $0.01 | $66 | 27k | 19k | 68M | 146 | 16.44s | 16.44s | 19.87s | 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 | $0.03 | $0.1 | $0.10 | $0.50 | $0.01 | $48 | 20k | 13k | 47M | 127 | 6.91s | 6.91s | 10.85s | 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 | $0.02 | $0.1 | $0.10 | $0.50 | $0.01 | $31 | 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 | $0.0045 | $0.1 | $0.10 | $0.50 | $0.01 | $11 | 2k | 515 | 8M | 127 | 1.79s | 1.79s | 5.71s | 16.26s | - | 1M | Sep 2026 | - | Yes | Supports: text and image | Supports: text | Not available | - | | |
| GPT-6 Luna (Non-reasoning) | OpenAI | 18 | 20 | 20 | 19 | - | 21 | 24 | $0.01 | $0.1 | $0.10 | $0.50 | $0.01 | $19 | 4k | 0 | 7M | 128 | 0.75s | 0.75s | 4.65s | 28.48s | - | 1M | Sep 2026 | - | No | Supports: text and image | Supports: text | Not available | - | | |