Model decision surface
Compare AI models
Start with GPT-6 Luna and Grok 4.7, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.
Current public data
GPT-6 Luna vs Grok 4.7
Live dataset updated 9/22/2026, 10:37:09 PM UTC
Open 1200×630 evidence receipt| Field | GPT-6 Luna OpenAI | Grok 4.7 xAI |
|---|---|---|
| ModelCap position | #25 | #4 |
| Index score | 78.6 | 88.2 |
| Evidence | Measured3 public benchmark observations across 3 boards | Measured1 public benchmark observation across 1 board |
| Input / 1M | $0.10 | $1.60 |
| Output / 1M | $0.50 | $4.80 |
| Pricing status | fresh | fresh |
| Context | 1M | 500K |
| Providers | 2 | 1 |
| Weight access | API only | API only |
Decision facts
- GPT-6 Luna is #25; Grok 4.7 is #4 on the same current language board.
- Index scores are 78.6 for GPT-6 Luna and 88.2 for Grok 4.7. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
- Both positions use Measured evidence.
- Listed output price per 1M tokens is $0.50 for GPT-6 Luna and $4.80 for Grok 4.7. For 1,000 requests with 2,000 input and 500 output tokens each (2M input + 0.5M output), the listed-rate estimate is $0.45 for GPT-6 Luna versus $5.60 for Grok 4.7. GPT-6 Luna costs 92.0% less in this scenario. This excludes caching, batch discounts, prompt-length tiers, tool charges and retries; verify the selected endpoint before budgeting.
- Published context is 1,050,000 tokens for GPT-6 Luna and 500,000 for Grok 4.7.
- ModelCap currently lists 2 providers for GPT-6 Luna and 1 for Grok 4.7.
These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.
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Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.